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de Souza GHM, Dias-Junior LCDL, Machado RG, Ghidini GP, Minamisako MC, Takashima MTU, Cábia NC, Machado R, da Silveira Teixeira C, Garcia LDFR. Assessing push-out bond strength in re-irradiated teeth: Universal resin cement performance in self-etch and self-adhesive modes. J ESTHET RESTOR DENT 2024; 36:941-950. [PMID: 38475977 DOI: 10.1111/jerd.13220] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/26/2024] [Revised: 02/29/2024] [Accepted: 03/01/2024] [Indexed: 03/14/2024]
Abstract
OBJECTIVES To investigate the effect of cumulative doses of radiation on the pushout bond strength (BS) of a universal resin cement used in the self-etch (SE) and self-adhesive (SA) modes to the intraradicular dentin. MATERIALS AND METHODS Forty-eight human teeth were distributed into three groups (n = 16) according to the radiation therapy dose (RT): NoRT (no-radiotherapy), 70RT (70 Gy), and 70 + 70RT (70 Gy + 70 Gy). The teeth were redistributed into two subgroups (n = 8), according to the adhesive mode: SE (NoRT-SE, 70RT-SE, and 70 + 70RT-SE) and SA (NoRT-SA, 70RT-SA, and 70 + 70RT-SA). Data were statistically compared after BS test (ANOVA, Tukey's post hoc test, and Fisher's exact test). RESULTS In the SA mode, BS was significantly higher in nonirradiated teeth compared with 70RT and 70 + 70RT (p < 0.0001). There were no significant differences between SE and SA modes in nonirradiated teeth (p = 0.14). In the 70RT group, SE mode increased BS compared with SA mode (p < 0.0001). Most specimens had adhesive and mixed failures in SA and SE modes, respectively. CONCLUSIONS The universal resin cement in the SE mode had greater BS to the irradiated dentin. When teeth were re-irradiated, the universal resin cement had similar performance in terms of BS, regardless of the adhesive approach. CLINICAL SIGNIFICANCE There is no research establishing a correlation between radiotherapy and its impact on the BS of a universal resin cement used in SE and SA modes to intraradicular dentin.
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Affiliation(s)
| | - Luiz Carlos de Lima Dias-Junior
- Department of Dentistry - Endodontics Division, Health Sciences Center, Federal University of Santa Catarina, Florianópolis, SC, Brazil
| | - Renata Gondo Machado
- Department of Dentistry - Endodontics Division, Health Sciences Center, Federal University of Santa Catarina, Florianópolis, SC, Brazil
| | - Gabriela Pasqualin Ghidini
- Department of Dentistry - Endodontics Division, Health Sciences Center, Federal University of Santa Catarina, Florianópolis, SC, Brazil
| | | | | | - Nayara Cardoso Cábia
- Department of Radiotherapy, Oncology Research Center (CEPON), Florianópolis, SC, Brazil
| | - Ricardo Machado
- Department of Restorative Sciences, College of Dentistry, University of Oklahoma, Oklahoma City, Oklahoma, USA
| | - Cleonice da Silveira Teixeira
- Department of Dentistry - Endodontics Division, Health Sciences Center, Federal University of Santa Catarina, Florianópolis, SC, Brazil
| | - Lucas da Fonseca Roberti Garcia
- Department of Dentistry - Endodontics Division, Health Sciences Center, Federal University of Santa Catarina, Florianópolis, SC, Brazil
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Savaris JM, Isoton JC, Fluck BF, Tedesco M, Bortoluzzi EA, da Fonseca Roberti Garcia L, da Silveira Teixeira C. Comparative Analysis of AH Plus Bond Strength to Root Canal Dentin and Adhesive Interface Quality after Calcium Hydroxide Removal using Different Irrigation Protocols. J Endod 2024; 50:659-666. [PMID: 38431198 DOI: 10.1016/j.joen.2024.02.019] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/25/2023] [Revised: 02/23/2024] [Accepted: 02/23/2024] [Indexed: 03/05/2024]
Abstract
INTRODUCTION To evaluate the push-out bond strength (POBS) of AH Plus sealer to root dentin and the adhesive interface quality after calcium hydroxide (Ca(OH)2) intracanal dressing removal with different final irrigation protocols. METHOD After root canal instrumentation and irrigation, 40 root canals were filled with Ca(OH)2 and sealed. After 14 days, the specimens were randomly distributed according to the irrigation protocols for Ca(OH)2 removal (n = 10): GH2O (control) - distilled water; GNaOCl - 1% NaOCl; GEDTA - 17% EDTA; GEDTA + NaOCl - 17% EDTA + 1% NaOCl. The root canals were filled with AH Plus sealer and gutta-percha. After 7 days, the roots were sectioned into dentin slices and submitted to POBS test and analysis of the adhesive interface under scanning electron microscope. The POBS data were statistically evaluated (analysis of variance and Tukey test). The Kruskal-Wallis and Mann-Whitney tests were used to analyze the adhesive interface (α = 0.05). RESULTS GH2O, GNaOCl, and GEDTA + NaOCl had similar POBS values, with higher values on the apical third, in comparison with other thirds (P < .05). A homogeneous and free-of-gaps adhesive interface was observed for GH2O, GNaOCl, and GEDTA + NaOCl, with difference between GH2O and GEDTA (P < .05). GH2O and GEDTA + NaOCl presented higher sealer tags formation (P < .05). CONCLUSION The final rinse with EDTA for Ca(OH)2 dressing removal had a negative effect on the POBS of the filling material to root dentin. The use of EDTA followed by NaOCl had results similar to the distilled water, providing uniform and free-of-gaps adhesive interface, and a higher number of sealer tags.
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Affiliation(s)
- Julia Menezes Savaris
- Postgraduate Program in Dentistry, Federal University of Santa Catarina, Florianópolis, Santa Catarina, Brazil
| | - Jakson Carlos Isoton
- Postgraduate Program in Dentistry, Federal University of Santa Catarina, Florianópolis, Santa Catarina, Brazil
| | - Bruna Fiorine Fluck
- Postgraduate Program in Dentistry, Federal University of Santa Catarina, Florianópolis, Santa Catarina, Brazil
| | - Maybell Tedesco
- Postgraduate Program in Dentistry, Federal University of Santa Catarina, Florianópolis, Santa Catarina, Brazil
| | - Eduardo Antunes Bortoluzzi
- Division of Endodontics, Department of Diagnosis and Oral Health, University of Louisville, Louisville, Kentucky
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Schimdt TF, da Fonseca Roberti Garcia L, da Silveira Teixeira C, Alcalde MP, Hungaro Duarte MA, Bortoluzzi EA. How Does Intentional Apical Foraminal Enlargement Affect the Foramen and Root Canal Morphology? J Endod 2024; 50:651-658. [PMID: 38387796 DOI: 10.1016/j.joen.2024.02.013] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2023] [Revised: 02/11/2024] [Accepted: 02/12/2024] [Indexed: 02/24/2024]
Abstract
INTRODUCTION This study assessed the effect of intentional foraminal enlargement on the foramen and the apical root canal morphology. METHOD Sixty mesial roots of mandibular molars were scanned by micro-computed tomography. Their apical foramina were photographed with a stereomicroscope before and after preparation. Three groups were formed (n = 20) according to the working length (WL). G-1: foramen - 1 mm; G0: foramen; and G+1: foramen + 1 mm. Each group originated 2 subgroups (n = 10): G-1: Buchanan's patency (size 10 K-type file) and foraminal debridement (sizes 20, 25 and 30 K-type files); G0 and G+1: rotary foraminal enlargement (ProDesign S size 25/.08) or reciprocating foraminal enlargement (R25). The area, perimeter, transportation, and noninstrumented walls of the foramen were evaluated. The root canal transportation and the centering index of preparation at 1, 3 and 5 mm from the foramen were also assessed. Data were compared statistically (α = 5%). RESULTS The instruments used at the foramen and 1 mm beyond promoted foraminal enlargement and transportation. Regarding NIW, there was no difference between mechanized foraminal enlargements performed at the foramen or 1 mm beyond, similar to the manual foraminal debridement group (P > .05). There was no difference in transportation and centralization at 1-, 3-, and 5-mm apical levels, regardless of the instrumentation systems. CONCLUSION Mechanical preparation at the foramen, or 1 mm beyond, resulted in foraminal enlargement, transportation and were not able to touch all root canal walls that delimit the foramen.
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Affiliation(s)
- Tamer Ferreira Schimdt
- Endodontics Division, Department of Dentistry, Health Sciences Center, Federal University of Santa Catarina, Florianopolis, Santa Catarina, Brazil
| | - Lucas da Fonseca Roberti Garcia
- Endodontics Division, Department of Dentistry, Health Sciences Center, Federal University of Santa Catarina, Florianopolis, Santa Catarina, Brazil
| | - Cleonice da Silveira Teixeira
- Endodontics Division, Department of Dentistry, Health Sciences Center, Federal University of Santa Catarina, Florianopolis, Santa Catarina, Brazil
| | - Murilo Priori Alcalde
- Department of Dentistry, Endodontics and Dental Materials, Bauru School of Dentistry, University of São Paulo, São Paulo, Brazil
| | - Marco Antonio Hungaro Duarte
- Department of Dentistry, Endodontics and Dental Materials, Bauru School of Dentistry, University of São Paulo, São Paulo, Brazil
| | - Eduardo Antunes Bortoluzzi
- Endodontics Division, Department of Diagnosis & Oral Health, University of Louisville, Louisville, Kentucky.
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Machado R, Moreira G, Comparin D, Barroso AP, Nascimento J, Ferraz CCR, Ignácio SA, da Fonseca Roberti Garcia L, Amaral RR, Shadid D, da Silva Neto UX. Postoperative pain after single-visit root canal treatments in necrotic teeth comparing instruments' kinematics and apical instrumentation limits - a prospective randomized multicenter clinical trial. BMC Oral Health 2024; 24:481. [PMID: 38643087 PMCID: PMC11032596 DOI: 10.1186/s12903-024-04225-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/28/2023] [Accepted: 04/04/2024] [Indexed: 04/22/2024] Open
Abstract
OBJECTIVES This prospective randomized multicenter clinical trial (PRMCT) investigated postoperative pain after single-visit root canal treatments in teeth affected by pulp necrosis (PN), and asymptomatic apical periodontitis (AAP) (with apical radiolucent areas) or normal periradicular tissues (without apical radiolucent areas) comparing different instruments' kinematics and apical instrumentation limits. METHODS Before chemomechanical preparation, 240 patients/teeth were randomly distributed into four groups (n = 60) according to the instruments' kinematics (rotary or reciprocating) and apical instrumentation limits (with or without intentional foraminal enlargement [IFE]). After that, specimens were submitted to the same irrigation and obturation techniques, and the patients were referred to undergo the definitive restorations. No medication was prescribed, but the patients were instructed to take either paracetamol (750 mg every 6 h for three days) or ibuprofen (600 mg every 6 h for three days) in pain cases. Postoperative pain incidence and levels were assessed at 24-, 48-, and 72 h following treatment completion according to a verbal rating scale (VRS) following a score. The Kolmogorov-Smirnov test was applied to assess the normality of the data. Mann-Whitney U, Chi-square, Friedman's ANOVA, and Friedman's multiple 2 to 2 comparison tests were employed to identify potential significant statistical differences among the variables in the study groups (P < .05). RESULTS Significant statistical differences were only observed among the groups considering tooth, periradicular status, and the occurrence of overfilling (sealer extrusion) (P < 0.00). Patients with teeth instrumented through rotary kinematics and without IFE experienced lower rates of postoperative pain; however, this difference was relevant only at 24 h (P < 0.05). CONCLUSIONS Postoperative pain was lower after using a rotary file system (Profile 04) inserted up to the apical constriction (AC). However, this finding was just statistically meaningful at 24 h. TRIAL REGISTRATION This PRMCT was approved by the Human Research Ethics Committee of the Paranaense University - UNIPAR, Francisco Beltrão, PR, Brazil (CAAE. 46,774,621.6.0000.0109) on 02/09/2021. It was registered at The Brazilian Registry of Clinical Trials - ReBEC (RBR-3r967t) on 01/06/2023, was performed according to the Principles of the Helsinki Declaration and is reported following the Consolidated Standards of Reporting Trials Statement.
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Affiliation(s)
- Ricardo Machado
- College of Dentistry, Department of Restorative Sciences, Division of Endodontics, Health Sciences Center, University of Oklahoma - COD/OUHSC, Oklahoma City, Oklahoma, USA.
| | - Guilherme Moreira
- Clinical Practice Limited to Endodontics, Francisco Beltrão, Paraná, Brazil
| | - Daniel Comparin
- Clinical Practice Limited to Endodontics, Cunha Porã and Francisco Beltrão, Paraná, Brazil
| | - Arthur Pimentel Barroso
- Piracicaba Dental School, Department of Restorative Dentistry, Division of Endodontics, State University of Campinas - FOP/UNICAMP, Piracicaba, São Paulo, Brazil
| | - Jaqueline Nascimento
- School of Dentistry, Department of Endodontics, Pontifical Catholic University of Paraná - PUC/PR, Curitiba, Paraná, Brazil
| | - Caio Cézar Randi Ferraz
- Piracicaba Dental School, Department of Restorative Dentistry, Division of Endodontics, State University of Campinas - FOP/UNICAMP, Piracicaba, São Paulo, Brazil
| | - Sérgio Aparecido Ignácio
- School of Dentistry, Department of Statistics, Pontifical Catholic University of Paraná - PUC/PR, Curitiba, Paraná, Brazil
| | - Lucas da Fonseca Roberti Garcia
- Department of Dentistry, Division of Endodontics, Federal University of Santa Catarina - UFSC, Florianópolis, Santa Catarina, Brazil
| | | | - David Shadid
- College of Dentistry, Department of Restorative Sciences, Division of Endodontics, Health Sciences Center, University of Oklahoma - COD/OUHSC, Oklahoma City, Oklahoma, USA
| | - Ulisses Xavier da Silva Neto
- School of Dentistry, Department of Endodontics, Pontifical Catholic University of Paraná - PUC/PR, Curitiba, Paraná, Brazil
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Monteiro Czornobay LF, de Oliveira Rocha A, Leite CC, Menezes Dos Anjos L, Ribeiro JS, Pacheco de Castro Henriques BA, Cardoso M, Machado R, da Silveira Teixeira C, da Fonseca Roberti Garcia L. A Global Overview on Electronic Apex Locator Use From 1968 to 2023: A Bibliometric Analysis. J Endod 2024:S0099-2399(24)00228-0. [PMID: 38614449 DOI: 10.1016/j.joen.2024.04.002] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/26/2024] [Revised: 04/01/2024] [Accepted: 04/02/2024] [Indexed: 04/15/2024]
Abstract
INTRODUCTION This bibliometric review analyzed the research trends and main characteristics of articles related to Electronic Apex Locators (EALs). METHODS The search was conducted in November 2023 on the Web of Science Core Collection. Narrative and systematic reviews, observational and intervention studies, laboratory, and clinical studies were included. Two researchers selected the articles and extracted the number of citations, year of publication, journal, study design, theme, country, continent, institutions, author, and keywords. Collaborative networks were generated using the VOSviewer software. The relationship between data were determined by Spearman's correlation. RESULTS The search resulted in 374 articles, of which 294 were included. Most cited article had 175 citations. The most prevalent journal was the Journal of Endodontics (n = 84). The predominant study design was the laboratory-based (n = 223). The predominant theme was the EALs accuracy (n = 175). Piasecki L was the author with the highest number of articles (n = 11). Only 8.16% of the studies were conducted in deciduous teeth. The country with the most studies was Brazil (n = 46). Asia (n = 107) was the continent with the highest number of publications. There was a weak positive correlation between the number of citations and impact factor (rho = .294), and a strong negative correlation between citations and year of publication (rho = -.710). CONCLUSIONS The majority of articles were laboratory-based studies conducted on permanent teeth, focusing on the accuracy of EALs. Future studies should prioritize research on deciduous teeth, systematic reviews, and, notably, clinical trials.
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Affiliation(s)
| | - Aurélio de Oliveira Rocha
- Department of Dentistry, Federal University of Santa Catarina, Florianópolis, Santa Catarina, Brazil
| | - Christiane Cabral Leite
- Department of Dentistry, Federal University of Santa Catarina, Florianópolis, Santa Catarina, Brazil
| | - Lucas Menezes Dos Anjos
- Department of Dentistry, Federal University of Santa Catarina, Florianópolis, Santa Catarina, Brazil
| | - Juliana Silva Ribeiro
- Department of Dentistry, Federal University of Santa Catarina, Florianópolis, Santa Catarina, Brazil
| | | | - Mariane Cardoso
- Department of Dentistry, Federal University of Santa Catarina, Florianópolis, Santa Catarina, Brazil
| | - Ricardo Machado
- Department of Restorative Sciences, College of Dentistry, University of Oklahoma, Oklahoma City, Oklahoma
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Fischer BV, Dias-Junior LCDL, Minamisako MC, Almeida CM, da Silva LR, Bortoluzzi EA, Teixeira CDS, Garcia LDFR. Effect of the timing of primary endodontic treatment and dosage of radiation therapy on the filling material removal. AUST ENDOD J 2024. [PMID: 38596885 DOI: 10.1111/aej.12846] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2023] [Revised: 03/11/2024] [Accepted: 04/01/2024] [Indexed: 04/11/2024]
Abstract
This study investigated the effect of the timing of primary endodontic treatment and dosage of radiotherapy on the remaining filling material (RFM) during endodontic reintervention. 60 single-rooted human mandibular premolars were distributed into five groups (n = 12), according to the timing and dosage of radiation (55Gy or 70Gy): NegativeCG-non-irradiated teeth; Endo-pre-RT55/70-obturation before irradiation (55Gy or 70Gy); Endo-post-RT55/70-obturation and reintervention after irradiation (55Gy or 70Gy). Roots were cleaved and analysed under stereomicroscope and Scanning Electron Microscope to quantify (%) the RFM. Experimental groups had a significantly greater amount (p < 0.05) of RFM in the middle and apical thirds than the control group, except for Endo-pre-RT55 in the middle third (p < 0.0001). The apical third had greater amount of RFM (p < 0.05). Radiation therapy, before and after primary endodontic treatment, increased the amount of RFM, regardless of the dose delivered. When necessary, reintervention preferably must be performed before radiation therapy.
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Affiliation(s)
- Bruna Venzke Fischer
- Department of Dentistry, Endodontics Division, Health Sciences Center, Federal University of Santa Catarina, Florianopolis, Santa Catarina, Brazil
| | - Luiz Carlos de Lima Dias-Junior
- Department of Dentistry, Endodontics Division, Health Sciences Center, Federal University of Santa Catarina, Florianopolis, Santa Catarina, Brazil
| | | | - Cristiane Maria Almeida
- Department of Radiotherapy, Oncology Research Center (CEPON), Florianópolis, Santa Catarina, Brazil
| | - Luciano Roberto da Silva
- Department of Radiotherapy, Oncology Research Center (CEPON), Florianópolis, Santa Catarina, Brazil
| | - Eduardo Antunes Bortoluzzi
- Department of Diagnosis & Oral Health, Division of Endodontics, School of Dentistry, University of Louisville, Louisville, Kentucky, USA
| | - Cleonice da Silveira Teixeira
- Department of Dentistry, Endodontics Division, Health Sciences Center, Federal University of Santa Catarina, Florianopolis, Santa Catarina, Brazil
| | - Lucas da Fonseca Roberti Garcia
- Department of Dentistry, Endodontics Division, Health Sciences Center, Federal University of Santa Catarina, Florianopolis, Santa Catarina, Brazil
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Cardoso IV, Silveira MPC, Vitali FC, Piasecki L, da Fonseca Roberti Garcia L, Bortoluzzi EA, Teixeira CS. Evaluation of changes in root canal length and accuracy of the electronic apex locator during different stages of endodontic treatment and retreatment. Odontology 2024; 112:537-545. [PMID: 37644294 DOI: 10.1007/s10266-023-00846-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/22/2023] [Accepted: 08/07/2023] [Indexed: 08/31/2023]
Abstract
This study evaluated changes in the root canal length (RCL) and the accuracy of the electronic apex locator (EAL) during the different stages of endodontic treatment and retreatment. Fifty-six mesial root canals of mandibular molars were selected. The actual root canal length (AL) of the canals was obtained by inserting a size 15 hand file up to the apical foramen, under magnification. The electronic lengths were obtained at the "APEX" mark of Root ZX II, using an alginate model. Both measurements were performed at three different stages of the initial root canal treatment-unflared, flared, and concluded-and at two stages of retreatment, after achieving patency and repreparation. Data were statistically analyzed and the significance level established was 5%. All stages produced a significant reduction in the AL (p < 0.05). The greatest variation was observed between the unflared-flared stages (0.2 mm) and between concluded-patency stages (0.09 mm), with no difference between them (p > 0.05). The accuracy of Root ZX II was negatively affected after achieving patency, presenting statistically significant difference compared to the other stages (p < 0.05). A significant reduction in the RCL was observed along the different stages of endodontic treatment and retreatment. The EAL was accurate to measure the root canals in most stages, except after achieving patency for endodontic retreatment. Determining and monitoring the RCL is an essential step towards a favorable prognosis, since it reduced along the different stages evaluated. Root ZX II was not accurate for endodontic retreatment.
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Affiliation(s)
- Ihan Vitor Cardoso
- Department of Dentistry-Endodontics Division, Health Sciences Center, Federal University of Santa Catarina, Campus João David Ferreira Lima, Trindade, Florianópolis, SC, Brazil
| | - Matheus Pompeo Caldas Silveira
- Department of Dentistry-Endodontics Division, Health Sciences Center, Federal University of Santa Catarina, Campus João David Ferreira Lima, Trindade, Florianópolis, SC, Brazil
| | - Filipe Colombo Vitali
- Department of Dentistry-Endodontics Division, Health Sciences Center, Federal University of Santa Catarina, Campus João David Ferreira Lima, Trindade, Florianópolis, SC, Brazil
| | - Lucila Piasecki
- Department of Periodontics and Endodontics, University at Buffalo, New York, NY, USA
| | - Lucas da Fonseca Roberti Garcia
- Department of Dentistry-Endodontics Division, Health Sciences Center, Federal University of Santa Catarina, Campus João David Ferreira Lima, Trindade, Florianópolis, SC, Brazil
| | - Eduardo Antunes Bortoluzzi
- Department of Diagnosis and Oral Health, School of Dentistry, University of Louisville, Louisville, KY, USA
| | - Cleonice Silveira Teixeira
- Department of Dentistry-Endodontics Division, Health Sciences Center, Federal University of Santa Catarina, Campus João David Ferreira Lima, Trindade, Florianópolis, SC, Brazil.
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Maiola EC, Boppré LM, Savaris JM, Dias Junior LCDL, Garcia LDFR, Teixeira CDS, Bortoluzzi EA. Did in-between rinsing and agitating with distilled water prevents precipitate formation by the interaction between sodium hypochlorite and chlorhexidine canal irrigants? Microsc Res Tech 2024; 87:315-325. [PMID: 37811954 DOI: 10.1002/jemt.24435] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/16/2023] [Revised: 08/16/2023] [Accepted: 09/27/2023] [Indexed: 10/10/2023]
Abstract
The interaction of sodium hypochlorite (NaOCl) and chlorhexidine gluconate (CHX) produces an orange-brown precipitate. The present study evaluated the influence of distilled water (H2 O) in different irrigation protocols designed to prevent the formation of precipitate with NaOCl and CHX. Fifty canine teeth were instrumented and split longitudinally. The canal was examined with a stereomicroscope and photographed by canal-thirds. The tooth halves were repositioned and distributed randomly into five groups, according to the final irrigation protocol (n = 10): G1 (control)-Ethylenediaminetetraacetic acid (EDTA) + NaOCl + CHX, conventional irrigation (CI); G2-EDTA + NaOCl + CHX, activated with passive ultrasonic irrigation (PUI); G3-EDTA (PUI) + NaOCl (PUI) + H2 O (CI) + CHX (PUI); G4-EDTA + NaOCl + H2 O + CHX (PUI); G5-EDTA (PUI) + NaOCl (PUI) + H2 O (continuous ultrasonic irrigation [CUI]) + CHX (PUI). The specimens were evaluated with a stereomicroscope and scanning electron microscope (SEM). Energy dispersive x-ray spectroscopy analysis was performed to identify the elemental profile of the irrigated canal walls. The images were scored according to the extensiveness of precipitate. Data were analyzed (Kruskal-Wallis test, α = 5%). Under the stereomicroscope, G1 had significantly higher scores than all the other groups in all canal-thirds (p < .05). All four experimental groups showed similar scores (p > .05). There were no significant differences in precipitate formation among root-thirds in intragroup analysis (p > .05). Upon SEM examination, overall, only G5 had lower scores than G1 (p < .05). Analysis by canal-thirds showed no significant difference among groups and among canal-thirds in the intragroup analysis (p > .05). G1 showed high Cl peaks. In-between irrigation with H2 O activated by CUI is effective in preventing precipitate formation during canal debridement with NaOCl and CHX. RESEARCH HIGHLIGHTS: Continuous ultrasonic irrigation with distilled water was capable to prevent the precipitate formation. The precipitate can be classified as a chemical smear layer.
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Affiliation(s)
- Emanuelle Catherine Maiola
- Postgraduate Program in Dentistry, Federal University of Santa Catarina, Florianopolis, Santa Catarina, Brazil
| | - Letícia Mendes Boppré
- Postgraduate Program in Dentistry, Federal University of Santa Catarina, Florianopolis, Santa Catarina, Brazil
| | - Julia Menezes Savaris
- Postgraduate Program in Dentistry, Federal University of Santa Catarina, Florianopolis, Santa Catarina, Brazil
| | | | | | | | - Eduardo Antunes Bortoluzzi
- Department of Diagnosis & Oral Health, Division of Endodontics, University of Louisville, Louisville, Kentucky, USA
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Jordani LD, da Rosa AF, Dias-Junior LCDL, Savaris JM, Minamisako MC, da Silva LR, Takashima MTU, Bortoluzzi EA, da Silveira Teixeira C, da Fonseca Roberti Garcia L. Ultrasonic activation of the endodontic sealer enhances its intratubular penetration and bond strength to irradiated root dentin. Odontology 2024:10.1007/s10266-023-00888-9. [PMID: 38194041 DOI: 10.1007/s10266-023-00888-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/22/2023] [Accepted: 12/10/2023] [Indexed: 01/10/2024]
Abstract
To evaluate the effect of ultrasonic activation of the endodontic sealer on its intratubular penetration and bond strength to irradiated root dentin. Forty human teeth were distributed into 4 groups (n = 10), according to the radiation therapy (RT) exposure-70 Gy-and ultrasonic activation (UA) of the endodontic sealer: RT/UA-irradiated teeth and sealer UA; RT/no-UA-irradiated teeth and no sealer UA; no-RT/UA-non-irradiated teeth and sealer UA and no-RT/no-UA-non-irradiated teeth and no sealer UA. Push-out bond strength test was performed in a Universal Testing Machine. Failure modes and adhesive interface were analyzed under Scanning Electron Microscopy. The data were statistically compared (two-way-ANOVA and posthoc Games-Howell test; Fisher's exact test - α = 5%). The different experimental conditions (radiation and UA) and the root third had a significant effect on push-out bond strength, and the interaction of these factors was significant (p < 0.05). UA of the sealer significantly increased its bond strength to both irradiated and non-irradiated dentin (p < 0.05). The irradiated groups mostly presented adhesive-type failure of the sealer (p < 0.01). Regardless of the irradiation, the ultrasonically activated groups showed a more homogeneous adhesive interface, with the presence of sealer tags in greater density and depth. Ultrasonic activation enhanced the intratubular penetration and the bond strength of the endodontic sealer to irradiated dentin. The impact of ultrasonic activation of the endodontic sealer on teeth undergoing radiotherapy is a gap in the scientific literature that needs to be bridged.
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Affiliation(s)
- Luana Duart Jordani
- Department of Dentistry, Endodontics Division, Health Sciences Centre, Federal University of Santa Catarina, Campus Reitor João David Ferreira Lima, Florianópolis, Santa Catarina, 88040-900, Brazil
| | - Amanda Freitas da Rosa
- Department of Dentistry, Endodontics Division, Health Sciences Centre, Federal University of Santa Catarina, Campus Reitor João David Ferreira Lima, Florianópolis, Santa Catarina, 88040-900, Brazil
| | - Luiz Carlos de Lima Dias-Junior
- Department of Dentistry, Endodontics Division, Health Sciences Centre, Federal University of Santa Catarina, Campus Reitor João David Ferreira Lima, Florianópolis, Santa Catarina, 88040-900, Brazil
| | - Julia Menezes Savaris
- Department of Dentistry, Endodontics Division, Health Sciences Centre, Federal University of Santa Catarina, Campus Reitor João David Ferreira Lima, Florianópolis, Santa Catarina, 88040-900, Brazil
| | | | - Luciano Roberto da Silva
- Department of Radiotherapy, Oncology Research Centre (CEPON), Florianópolis, Santa Catarina, Brazil
| | | | - Eduardo Antunes Bortoluzzi
- Department of Diagnosis and Oral Health, Endodontics Division, University of Louisville, Louisville, KY, USA
| | - Cleonice da Silveira Teixeira
- Department of Dentistry, Endodontics Division, Health Sciences Centre, Federal University of Santa Catarina, Campus Reitor João David Ferreira Lima, Florianópolis, Santa Catarina, 88040-900, Brazil
| | - Lucas da Fonseca Roberti Garcia
- Department of Dentistry, Endodontics Division, Health Sciences Centre, Federal University of Santa Catarina, Campus Reitor João David Ferreira Lima, Florianópolis, Santa Catarina, 88040-900, Brazil.
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Boppré LM, Menezes Savaris J, Catherine Maiola E, Peressoni Vieira-Schuldt D, da Fonseca Roberti Garcia L, da Silveira Teixeira C, Antunes Bortoluzzi E. Can Heated Distilled Water Effectively Prevent Precipitate Formation between NaOCl and CHX? Int J Dent 2024; 2024:6612675. [PMID: 38222303 PMCID: PMC10787650 DOI: 10.1155/2024/6612675] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/07/2023] [Revised: 10/25/2023] [Accepted: 12/19/2023] [Indexed: 01/16/2024] Open
Abstract
Introduction The present study aimed to investigate the capacity of different irrigation protocols using heated distilled water at 65°C (HDW), in preventing the formation of the brown-orange precipitate observed after the interaction between sodium hypochlorite (NaOCl) and chlorhexidine (CHX). Methods Forty human canines were selected, prepared, and cleaved in two halves. Images of delimited areas in each root canal thirds were obtained through a stereomicroscope (16x and 40x). After reassembly, the teeth were distributed into four groups (n = 10) according to the final irrigation protocol: G1 (no HDW): EDTA + NaOCl + CHX with conventional irrigation (CI); G2 (HDW + CI): EDTA with passive ultrasonic irrigation (PUI) + NaOCl (PUI) + HDW (CI) + CHX (PUI); G3 (HDW + PUI): EDTA + NaOCl + HDW + CHX with PUI; G4 (HDW + CUI): EDTA (PUI) + NaOCl (PUI) + HDW with continuous ultrasonic irrigation (CUI) + CHX (PUI). After irrigation, the teeth were re-separated and images of the same delimited areas were obtained again. Scores were assigned according to the amount of precipitate observed, comparing the initial and final images. The data were submitted to Kruskal-Wallis, Dunn and Friedman statistical tests (α = 5%). Results G1(no HDW) showed the highest scores in the analysis between groups (p < 0.001), with a greater amount of precipitate in the cervical and medium thirds (p < 0.001). The thirds of the other experimental groups did not differ from each other (p > 0.05). Conclusion The intermediate irrigation with heated distilled water at 65°C prevented the formation of brown-orange precipitate, regardless of the use of ultrasonic activation (PUI or CUI).
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Affiliation(s)
- Letícia Mendes Boppré
- Department of Dentistry-Endodontics Division, Health Sciences Center, Federal University of Santa Catarina, Florianópolis, SC, Brazil
| | - Julia Menezes Savaris
- Department of Dentistry-Endodontics Division, Health Sciences Center, Federal University of Santa Catarina, Florianópolis, SC, Brazil
| | - Emanuelle Catherine Maiola
- Department of Dentistry-Endodontics Division, Health Sciences Center, Federal University of Santa Catarina, Florianópolis, SC, Brazil
| | | | - Lucas da Fonseca Roberti Garcia
- Department of Dentistry-Endodontics Division, Health Sciences Center, Federal University of Santa Catarina, Florianópolis, SC, Brazil
| | - Cleonice da Silveira Teixeira
- Department of Dentistry-Endodontics Division, Health Sciences Center, Federal University of Santa Catarina, Florianópolis, SC, Brazil
| | - Eduardo Antunes Bortoluzzi
- Department of Diagnosis and Oral Health, Division of Endodontics, University of Louisville, Louisville, KY, USA
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da Rosa AF, Fischer BV, Dias-Junior LCDL, Serique AVC, Bortoluzzi EA, Teixeira CDS, da Fonseca Roberti Garcia L. Effectiveness of different supplementary protocols for remaining filling material removal in endodontic reintervention: an integrative review. Odontology 2024; 112:51-73. [PMID: 37561273 DOI: 10.1007/s10266-023-00845-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/02/2023] [Accepted: 08/01/2023] [Indexed: 08/11/2023]
Abstract
The aim of this study was to perform an integrative review to identify the most effective supplementary protocols used after filling material (FM) removal and root canal reinstrumentation, during endodontic reintervention. The literature search was performed on the electronic databases PubMed and Latin American and Caribbean Health Sciences Literature (LILACS), using a combination of specific scientific descriptors. Selection criteria accepted articles published in English, Spanish and Portuguese languages, up to August 2021, involving in vitro and ex vivo studies. After applying the eligibility criteria, 46 articles were included for qualitative analysis. The tool for qualitative analysis of quasi-experimental studies of the Joanna Briggs Institute was used to determine the risk of bias of the included articles. The selected articles provided important data regarding the following supplementary protocols: sonic and ultrasonic activation of the irrigating solution; the use of ultrasonic inserts, XP-endo system instruments, and photon-induced photoacoustic streaming for mechanical debridement; and new devices as GentleWave system, and the self-adjusting file. Overall, all supplementary protocols demonstrated efficacy in removing the remaining FM. The implementation of various supplementary protocols can effectively remove the remaining FM from the root canal walls, although complete removal is not always achieved. However, it was not possible to determine the most effective protocol. Conversely, their association can enhance remaining FM removal. Remaining FM attached to root canal walls hinders proper chemical-mechanical preparation during endodontic reintervention. Supplementary protocols optimize the remaining FM removal, enhancing cleaning and disinfection of root canal.
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Affiliation(s)
- Amanda Freitas da Rosa
- Department of Dentistry - Endodontics Division, Health Sciences Centre, Federal University of Santa Catarina, Campus Reitor João David Ferreira Lima, CEP, Florianópolis, Santa Catarina, 88040-900, Brazil
| | - Bruna Venzke Fischer
- Department of Dentistry - Endodontics Division, Health Sciences Centre, Federal University of Santa Catarina, Campus Reitor João David Ferreira Lima, CEP, Florianópolis, Santa Catarina, 88040-900, Brazil
| | - Luiz Carlos de Lima Dias-Junior
- Department of Dentistry - Endodontics Division, Health Sciences Centre, Federal University of Santa Catarina, Campus Reitor João David Ferreira Lima, CEP, Florianópolis, Santa Catarina, 88040-900, Brazil
| | - Anna Victoria Costa Serique
- Department of Dentistry - Endodontics Division, Health Sciences Centre, Federal University of Santa Catarina, Campus Reitor João David Ferreira Lima, CEP, Florianópolis, Santa Catarina, 88040-900, Brazil
| | - Eduardo Antunes Bortoluzzi
- Department of Diagnosis & Oral Health, Endodontics Division, University of Louisville, Louisville, KY, USA
| | - Cleonice da Silveira Teixeira
- Department of Dentistry - Endodontics Division, Health Sciences Centre, Federal University of Santa Catarina, Campus Reitor João David Ferreira Lima, CEP, Florianópolis, Santa Catarina, 88040-900, Brazil
| | - Lucas da Fonseca Roberti Garcia
- Department of Dentistry - Endodontics Division, Health Sciences Centre, Federal University of Santa Catarina, Campus Reitor João David Ferreira Lima, CEP, Florianópolis, Santa Catarina, 88040-900, Brazil.
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Coelho SM, Pandolfo MT, Bortoluzzi EA, Rossetto HL, Pereira RP, Minamisako MC, Rodrigues PM, Netto VR, Ramos TDS, Teixeira CDS, Garcia LDFR. Effect of radiation therapy on fracture resistance of simulated immature teeth submitted to root reinforcement. Int J Paediatr Dent 2024; 34:3-10. [PMID: 37038703 DOI: 10.1111/ipd.13073] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/01/2022] [Revised: 03/27/2023] [Accepted: 04/04/2023] [Indexed: 04/12/2023]
Abstract
BACKGROUND The literature is scanty regarding the effect of radiation therapy (RT) on the mechanical properties of immature permanent teeth. AIM To evaluate the effect of RT on the fracture resistance of simulated immature teeth submitted to different types of root reinforcement. DESIGN Sixty-four human teeth simulating the Cvek stage 3 of root development were distributed into eight groups (n = 8), according to exposure or not to RT (70 Gy) and the root reinforcement method: Group NR (control)-no reinforcement/no RT; Group NR + RT (control)-no reinforcement/RT; Group PO-tricalcium silicate-based cement (TS) apical plug/canal obturation/no RT; Group PO + RT-TS apical plug/canal obturation/RT; Group TS-canal filling with TS/no RT; Group TS + RT-canal filling with TS/RT; Group FP-TS apical plug/fibreglass post/no RT; and Group FP + RT-TS apical plug/fibreglass post/RT. Fracture resistance was determined using a universal testing machine (0.5 mm/min). RESULTS In the intergroup comparison, nonirradiated teeth had higher fracture resistance (p < .05). Groups FP and FP + RT had higher fracture resistance (p < .001). CONCLUSION Radiotherapy affected the fracture resistance of simulated immature teeth. Reinforcement with fibreglass posts increased the fracture resistance, regardless of the radiation.
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Affiliation(s)
- Sérgio Murilo Coelho
- Department of Dentistry - Endodontics Division, Health Sciences Center, Federal University of Santa Catarina, Florianópolis, SC, Brazil
| | - Mariana Travi Pandolfo
- Department of Dentistry - Endodontics Division, Health Sciences Center, Federal University of Santa Catarina, Florianópolis, SC, Brazil
| | - Eduardo Antunes Bortoluzzi
- Department of Diagnosis & Oral Health - Endodontics Division, University of Louisville, Louisville, Kentucky, USA
| | | | - Roberta Pinto Pereira
- Department of Restorative Dentistry, Piracicaba School of Dentistry, State University of Campinas, Piracicaba, SP, Brazil
| | | | | | - Vicente Ribeiro Netto
- Department of Radiotherapy, Oncology Research Center (CEPON), Florianópolis, SC, Brazil
| | | | - Cleonice da Silveira Teixeira
- Department of Dentistry - Endodontics Division, Health Sciences Center, Federal University of Santa Catarina, Florianópolis, SC, Brazil
| | - Lucas da Fonseca Roberti Garcia
- Department of Dentistry - Endodontics Division, Health Sciences Center, Federal University of Santa Catarina, Florianópolis, SC, Brazil
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Rodrigues Cândido Lopes G, Paz Dotto ME, Hideo Nomura L, Peressoni Vieira Schuldt D, Garcia LDFR, da Silveira Teixeira C. Impact of Heating Exposure on the Micro-Push-Out Bond Strength of Bioceramic Sealers. Int J Dent 2023; 2023:3327275. [PMID: 37942468 PMCID: PMC10630006 DOI: 10.1155/2023/3327275] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/29/2023] [Revised: 09/26/2023] [Accepted: 10/15/2023] [Indexed: 11/10/2023] Open
Abstract
Introduction The aim of this study was to evaluate the effect of heating of bioceramic and epoxy resin-based sealers on their micro-push-out bond strength (BS) to root canal dentin. Methods After criterial selection, 30 human teeth were decoronated and 1-mm thick slices (n = 60) were obtained perpendicularly along tooth axis, from cervical and middle root thirds, with a diamond disc attached to a cutting machine. In each slice, three 1.0-mm diameter orifices were made. After rinsing with 17% EDTA and 2.5% NaOCl, each orifice was filled with Bio-C Sealer or BioRoot RCS or AH Plus, according to the manufacturers' instructions. After filling, half of the slices (n = 30) were heated at 100°C for 1 min, and the other half were kept at room temperature. After 7 days-controlled storage, micro-push-out test was performed in a Universal Testing Machine. Failures were analyzed using a stereomicroscope. Statistical analysis was performed with One-Way ANOVA and post hoc Tukey (α = 5%) tests. Results AH Plus demonstrated higher BS values after heating (p=0.001) when compared to nonheated. The other sealers did not show a statistically significant difference (p > 0.05). When heated, the average BS values for AH Plus were higher than for BioRoot RCS and Bio-C Sealer (p < 0.001). Cohesive failure mode was the most frequent, followed by adhesive and mixed ones. Conclusion Heating provided a higher push-out BS to root dentin for AH Plus and did not influence BioRoot RCS or Bio-C sealer.
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Affiliation(s)
- Guilherme Rodrigues Cândido Lopes
- Department of Dentistry, Endodontics Division, Health Sciences Center, Federal University of Santa Catarina, Florianopolis, Santa Catarina, Brazil
| | - Maria Eduarda Paz Dotto
- Department of Dentistry, Endodontics Division, Health Sciences Center, Federal University of Santa Catarina, Florianopolis, Santa Catarina, Brazil
| | - Lincon Hideo Nomura
- Department of Dentistry, Endodontics Division, Health Sciences Center, Federal University of Santa Catarina, Florianopolis, Santa Catarina, Brazil
| | | | - Lucas da Fonseca Roberti Garcia
- Department of Dentistry, Endodontics Division, Health Sciences Center, Federal University of Santa Catarina, Florianopolis, Santa Catarina, Brazil
| | - Cleonice da Silveira Teixeira
- Department of Dentistry, Endodontics Division, Health Sciences Center, Federal University of Santa Catarina, Florianopolis, Santa Catarina, Brazil
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de Lima Dias-Junior LC, Correa M, Cesar Lyra Porto O, Estrela C, da Silveira Teixeira C, da Fonseca Roberti Garcia L, Antunes Bortoluzzi E. Influence of a Metal Artifact Reduction Filter on the Diagnostic Accuracy of Complete and Incomplete Vertical Root Fractures. J Endod 2023; 49:1352-1361. [PMID: 37479111 DOI: 10.1016/j.joen.2023.07.010] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/08/2023] [Revised: 07/10/2023] [Accepted: 07/11/2023] [Indexed: 07/23/2023]
Abstract
INTRODUCTION This study aimed to assess the influence of the e-vol DX BAR filter on the diagnostic accuracy of complete and incomplete vertical root fractures (VRFs). METHODS Twenty single-rooted teeth were selected. The tooth crowns were removed, and the root canals were prepared up to a 40/.06 instrument (ProTaper Next). Each specimen was scanned in a Prexion 3D cone-beam computed tomography (CBCT) device, in a dry human skull, in 4 different situations: no root canal filling, gutta-percha, fiberglass post, and metal post. The specimens were fractured in a universal testing machine by using a customized wedge. Each specimen was reinspected to confirm the presence of incomplete VRFs. Another set of CBCT scans was performed. Then, the fractures were completed in the universal testing machine, the teeth were reinspected, and the CBCT images were acquired again. Images were assessed by using the e-Vol DX software system, with the BAR filter and with the original images, for the diagnosis of VRFs. Statistical analysis was performed by using the DeLong and McNemar tests for the comparison of the area under the receiver operating characteristic curves (AUC), accuracy, sensitivity, and specificity values. RESULTS The use of the BAR filter did not improve the diagnostic values of AUC, accuracy, sensitivity, and specificity in both fracture patterns (P > .05). Incomplete VRFs presented significantly lower AUC, accuracy, and sensitivity compared with complete VRFs (P < .0001). CONCLUSIONS The BAR filter did not improve the diagnostic accuracy of VRFs. The intracanal materials also did not influence the diagnosis. Incomplete VRFs were highly associated with a decrease in sensitivity.
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Affiliation(s)
| | - Marcio Correa
- Department of Dentistry, Federal University of Santa Catarina (UFSC), Florianópolis, Santa Catarina, Brazil
| | - Olavo Cesar Lyra Porto
- Department of Endodontics, School of Dentistry, Federal University of Goiás, Goiânia, Goiás, Brazil
| | - Carlos Estrela
- Department of Endodontics, School of Dentistry, Federal University of Goiás, Goiânia, Goiás, Brazil
| | | | | | - Eduardo Antunes Bortoluzzi
- Division of Endodontics, Department of Diagnosis & Oral Health, School of Dentistry, University of Louisville, Louisville, Kentucky
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Cancelier PDA, Machado RG, Savaris JM, Bortoluzzi EA, Teixeira CDS, Minamisako MC, Rodrigues PM, Netto VR, Dutra-Horstmann KL, Garcia LDFR. Effect of the timing of radiation therapy on the push-out strength of resin cement to root dentine. AUST ENDOD J 2023; 49 Suppl 1:122-131. [PMID: 36251405 DOI: 10.1111/aej.12699] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/09/2022] [Revised: 09/05/2022] [Accepted: 10/05/2022] [Indexed: 11/30/2022]
Abstract
This study investigated the effect of radiation timing on the bond strength of resin cement to intraradicular dentine. Fifty human teeth were distributed into 5 groups (n = 10): Control (nonirradiated teeth), Before-RCT (teeth irradiated before root canal treatment), After-CH (teeth irradiated after canal preparation and placement of calcium hydroxide intracanal dressing), After-RCT (teeth irradiated after completion of root canal treatment) and After-FPL (teeth irradiated after luting of a glass fibre post). Each tooth received 70 Gy irradiation. The roots were sectioned for push-out strength testing. After-RCT and After-FPL groups had significantly lower push-out strength than the control at the middle third (p < 0.05). Control and After-CH groups had a higher percentage of cohesive dentine failure. Radiotherapy after root canal obturation and post luting adversely affected the adhesiveness of resin cement to intraradicular dentine. Teeth irradiated before root canal treatment and after placement of calcium hydroxide had the best performance.
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Affiliation(s)
- Patrícia da Agostim Cancelier
- Department of Dentistry, Endodontics Division, Health Sciences Centre, Federal University of Santa Catarina, Florianópolis, Santa Catarina, Brazil
| | - Renata Gondo Machado
- Postgraduate Program in Dentistry, Federal University of Santa Catarina, Florianopolis, Santa Catarina, Brazil
| | - Júlia Menezes Savaris
- Department of Dentistry, Endodontics Division, Health Sciences Centre, Federal University of Santa Catarina, Florianópolis, Santa Catarina, Brazil
| | - Eduardo Antunes Bortoluzzi
- Postgraduate Program in Dentistry, Federal University of Santa Catarina, Florianopolis, Santa Catarina, Brazil
- Department of Diagnosis & Oral Health, Endodontics Division, University of Louisville, Louisville, Kentucky, USA
| | - Cleonice da Silveira Teixeira
- Department of Dentistry, Endodontics Division, Health Sciences Centre, Federal University of Santa Catarina, Florianópolis, Santa Catarina, Brazil
| | | | - Paulo Marcelo Rodrigues
- Department of Radiotherapy, Oncology Research Centre (CEPON), Florianópolis, Santa Catarina, Brazil
| | - Vicente Ribeiro Netto
- Department of Radiotherapy, Oncology Research Centre (CEPON), Florianópolis, Santa Catarina, Brazil
| | | | - Lucas da Fonseca Roberti Garcia
- Department of Dentistry, Endodontics Division, Health Sciences Centre, Federal University of Santa Catarina, Florianópolis, Santa Catarina, Brazil
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da Silva Magalhães K, Kuerten Gil AC, Goulart TS, Schuldt DPV, Coelho BS, Figueiredo DDR, Garcia LDFR, de Almeida J. Efficacy of disinfection procedures performed prior to regenerative endodontic therapy: An integrative review. AUST ENDOD J 2023; 49:418-427. [PMID: 35932453 DOI: 10.1111/aej.12670] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/24/2022] [Accepted: 07/17/2022] [Indexed: 11/30/2022]
Abstract
The aim of this integrative review was to identify whether the disinfection procedures performed prior to regenerative endodontic treatment were effective on biofilm removal from the root canals. The research was based on PubMed, Latin American and Caribbean Health Sciences Literature (Lilacs) and Scientific Electronic Library Online (SciELO) databases. Four articles were selected; one of the studies was in vivo and the others ex vivo. Different disinfection procedures were studied, characterised mainly by the use of intracanal medication, highlighting the double antibiotic paste, triple antibiotic paste and calcium hydroxide paste. Disinfection ability was evaluated against Enterococcus faecalis and multispecies biofilms by using the fluorescence technique and colony forming unit counting, for 7 to 21 days. Double antibiotic paste and triple antibiotic paste demonstrated excellent antibiofilm activity, unlike CH paste that showed limited disinfection, even when associated with different antimicrobial agents. Triple antibiotic paste was the most effective medication against biofilm.
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Affiliation(s)
| | - Ana Clara Kuerten Gil
- Department of Endodontics, University of Southern Santa Catarina, Palhoça, Santa Catarina, Brazil
| | - Taynara Santos Goulart
- Department of Endodontics, University of Southern Santa Catarina, Palhoça, Santa Catarina, Brazil
| | | | - Beatriz Serrato Coelho
- Department of Endodontics, University of Southern Santa Catarina, Palhoça, Santa Catarina, Brazil
| | | | | | - Josiane de Almeida
- Department of Endodontics, University of Southern Santa Catarina, Palhoça, Santa Catarina, Brazil
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Streck JNZ, Arcaro S, Ceretta RA, Bortoluzzi EA, Garcia LDFR, de Almeida J, Kopper PMP, Bernardi AV. Tip and taper compatibility of accessory gutta-percha points with rotary and reciprocating instruments. Restor Dent Endod 2023; 48:e22. [PMID: 37675449 PMCID: PMC10477427 DOI: 10.5395/rde.2023.48.e22] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/13/2022] [Revised: 03/13/2023] [Accepted: 03/22/2023] [Indexed: 09/08/2023] Open
Abstract
Objectives This study was conducted to evaluate and compare the tip and taper compatibility of accessory gutta-percha points (AGPs) with various rotary and reciprocating instruments. Materials and Methods Using a profile analyzer, tip and taper measurements were taken of 10 AGPs of each of the 14 models available from Odous de Deus and the 4 models available from Dentsply-Maillefer. Diameter measurements were taken at 1-mm intervals, from 3 mm from the tip (D3) to 16 mm. Results Based on the mean values obtained, 3-dimensional (3D) models of the AGPs were drawn in Autodesk Fusion 360 and superimposed on 3D models of each instrument selected (Mtwo, Reciproc, RaCe, K3, and ProDesign Logic) to determine the compatibility between the instrument and the AGP. Data corresponding to the tips and tapers of the various AGPs, as well as the tip and taper differences between the AGPs and the instruments, were analyzed using descriptive statistics. The tapers of the AGPs were subject to the American National Standards Institute/American Dental Association No. 57 standard. The Odous de Deus extra-long medium and extra-long extra-medium AGPs were shown to be compatible with Mtwo, K3, and ProDesign Logic instruments with taper 0.06 and tip sizes 25 and 30, while the Dentsply fine and fine medium cones were compatible with Mtwo, RaCe, and K3 instruments with conicity of 0.04 and tip sizes 35 and 40. Conclusions Both the Odous de Deus and Dentsply commercial brands included 2 AGP models with tip (D3) and taper compatibility with Mtwo, RaCe, K3, and/or Prodesign Logic instruments.
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Affiliation(s)
- Júlia Niero Zanatta Streck
- Department of Endodontics, School of Dentistry, University of Extreme Southern Santa Catarina, Criciúma, SC, Brazil
| | - Sabrina Arcaro
- Department of Endodontics, School of Dentistry, University of Extreme Southern Santa Catarina, Criciúma, SC, Brazil
| | - Renan Antônio Ceretta
- Department of Endodontics, School of Dentistry, University of Extreme Southern Santa Catarina, Criciúma, SC, Brazil
| | - Eduardo Antunes Bortoluzzi
- Department of Diagnosis & Oral Health, Division of Endodontics, School of Dentistry, University of Louisville, Louisville, KY, USA
| | | | - Josiane de Almeida
- Department of Endodontics, School of Dentistry, University of Southern Santa Catarina, Florianópolis, SC, Brazil
| | - Patrícia Maria Poli Kopper
- Program in Dentistry, School of Dentistry, Federal University of Rio Grande do Sul, Porto Alegre, RS, Brazil
| | - Anarela Vassen Bernardi
- Department of Endodontics, School of Dentistry, University of Extreme Southern Santa Catarina, Criciúma, SC, Brazil
- Biomaterials Group, Graduate Program in Materials Science and Engineering, University of Extreme Southern Santa Catarina, Criciúma, SC, Brazil
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Sabino-Silva R, Cardoso IV, Vitali FC, Alves AMH, Souza BDM, Bortoluzzi EA, da Fonseca Roberti Garcia L, da Silveira Teixeira C. Prevalence of postoperative pain after endodontic treatment using low and high concentrations of sodium hypochlorite: a systematic review and meta-analysis. Clin Oral Investig 2023; 27:4157-4171. [PMID: 37466716 DOI: 10.1007/s00784-023-05151-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2022] [Accepted: 07/11/2023] [Indexed: 07/20/2023]
Abstract
OBJECTIVES To determine the prevalence of postoperative pain after endodontic treatment using low (LC) and high (HC) concentrations of sodium hypochlorite (NaOCl). MATERIALS AND METHODS Six databases and the grey literature were searched to identify randomized clinical trials that evaluated postoperative pain after endodontic treatment using NaOCl. NaOCl concentrations were dichotomized into 'LC' (0.5% to 3%) and 'HC' (≥ 5%) and a proportion meta-analysis was applied to determine the postoperative pain prevalence: overall and according to pain intensity and postoperative time. The prevalence of patients using pain control medication was also determined. A significance level of 5% and a random effect model were applied for data analysis. Between-study heterogeneity was assessed by I2 index. Risk of bias (RoB) was assessed using the Cochrane Risk-of-Bias 2.0 tool. The certainty of evidence was assessed using the GRADE approach. RESULTS Ten studies were included in the review and eight in the meta-analysis. The overall prevalence of postoperative pain was 45% in LC and 39% in HC. The prevalence of pain in LC and HC after 24 h was 25% and 40%, respectively. After 48 h, the prevalence decreased to 10% in LC and 25% in HC. 'Absent pain' was the most prevalent score. The prevalence of patients who used medication was 9% in LC and 15% in HC. Three studies were classified as 'high RoB', five as 'low RoB', and two as 'some concerns'. The certainty of evidence was very low. CONCLUSIONS The overall prevalence of postoperative pain after endodontic treatment using LC and HC of NaOCl was 45% and 39%, respectively. CLINICAL RELEVANCE Postoperative pain is common after endodontic treatment using NaOCl, but tends to decrease over time.
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Affiliation(s)
- Rayssa Sabino-Silva
- Department of Dentistry, Federal University of Santa Catarina, Delfino Conti S/N, Trindade, Santa Catarina, 88040-370, Florianopolis, Brazil
| | - Ihan Vitor Cardoso
- Department of Dentistry, Federal University of Santa Catarina, Delfino Conti S/N, Trindade, Santa Catarina, 88040-370, Florianopolis, Brazil
| | - Filipe Colombo Vitali
- Department of Dentistry, Federal University of Santa Catarina, Delfino Conti S/N, Trindade, Santa Catarina, 88040-370, Florianopolis, Brazil
| | - Ana Maria Hecke Alves
- Department of Dentistry, Federal University of Santa Catarina, Delfino Conti S/N, Trindade, Santa Catarina, 88040-370, Florianopolis, Brazil
| | - Beatriz Dulcineia Mendes Souza
- Department of Dentistry, Federal University of Santa Catarina, Delfino Conti S/N, Trindade, Santa Catarina, 88040-370, Florianopolis, Brazil
| | - Eduardo Antunes Bortoluzzi
- Department of Diagnosis & Oral Health, School of Dentistry, University of Louisville, Louisville, KY, USA
| | - Lucas da Fonseca Roberti Garcia
- Department of Dentistry, Federal University of Santa Catarina, Delfino Conti S/N, Trindade, Santa Catarina, 88040-370, Florianopolis, Brazil
| | - Cleonice da Silveira Teixeira
- Department of Dentistry, Federal University of Santa Catarina, Delfino Conti S/N, Trindade, Santa Catarina, 88040-370, Florianopolis, Brazil.
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Nomura LH, Bortoluzzi EA, Tay FR, Garcia LDFR, Teixeira CDS. The effects of heating on the physicochemical properties of tricalcium silicate root canal sealers. Braz Dent J 2023; 34:34-43. [PMID: 37909640 PMCID: PMC10642270 DOI: 10.1590/0103-6440202305237] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/03/2022] [Accepted: 07/16/2023] [Indexed: 11/03/2023] Open
Abstract
This study evaluated the effect of heating on the physicochemical properties and surface changes of tricalcium silicate sealers. Three tricalcium silicate root canal sealers (Bio-C Sealer, BioRoot-RCS, EndoSequence BC Sealer), and one epoxy resin-based sealer (AH Plus; control) were tested. The effect of heating on setting time (ST) and flowability were assessed according to ANSI/ADA 57 and ISO 6876 standards. Solubility and dimensional change (DC) of the set sealers were evaluated at 24 hours and after 30 days; the pH of the water used in the DC testing was also measured. Tests were repeated with heated sealers in an oven at 100 °C for 1 min. SEM and EDS analysis were performed. Data were analyzed using One-Way ANOVA and Tukey post-hoc tests (α=5%). Heating decreased the ST for AH Plus and EndoSequence (p<0.05). Heating reduced flowability (p<0.05) and increased pH for AH Plus (p<0.05). The solubility of Bio-C (dried specimens) was not in accordance with the ANSI/ADA standard. The solubility of EndoSequence was significantly higher (p<0.05) when it was heated and dried after 30 days. DC of Bio-C (24 h and 30 days), BioRoot-RCS (30 days) and AH Plus (24 h and 30 days) were not in accordance with the standards. SEM and EDS analysis showed significant changes in sealer microstructure after heating. In conclusion, heating decreased the ST and increased the solubility of EndoSequence BC sealer. No significant changes in flowability, DC, and pH were identified for all three tricalcium silicate sealers after heat application. However, all sealers had significant surface changes.
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Affiliation(s)
- Lincon Hideo Nomura
- Department of Dentistry, Federal University of Santa Catarina (UFSC), Florianópolis, SC, Brazil
| | - Eduardo Antunes Bortoluzzi
- Department of Dentistry, Federal University of Santa Catarina (UFSC), Florianópolis, SC, Brazil
- Department of Diagnosis & Oral Health, Division of Endodontics, University of Louisville, Louisville, KY, USA
| | - Franklin R. Tay
- Department of Endodontics, The Dental College of Georgia, Augusta University, GA, USA
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Tedesco M, Vitali FC, Bortoluzzi EA, Garcia LDFR, Teixeira CDS. Analysis of physicochemical properties of endodontic sealers containing rhodamine B. J Mech Behav Biomed Mater 2023; 140:105699. [PMID: 36753848 DOI: 10.1016/j.jmbbm.2023.105699] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2022] [Revised: 01/27/2023] [Accepted: 01/30/2023] [Indexed: 02/05/2023]
Abstract
The use of fluorescent dyes in microscopy studies is frequent. Therefore, it is important to investigate whether these compounds may alter the physicochemical properties of materials in which they are incorporated to avoid methodological biases. This study evaluated the physicochemical properties of two endodontic sealers containing dry or diluted rhodamine B. Six groups were evaluated: AH Plus and MTA Fillapex in their original composition and mixed with 0.1% dry or diluted rhodamine. Push-out test was applied to assess the bond strength to root dentin. ANSI-ADA No. 57 and ISO No. 6876:2012 specifications were followed to evaluate flowability, setting time, and solubility of the sealers. pH changes were assessed after 24 h, 7, and 30 days. Intergroup comparisons were analyzed by ANOVA complemented by Tukey's post-hoc test; comparisons among periods were analyzed by Wilcoxon and Friedman tests. The incorporation of dry rhodamine decreased the bond strength and prolonged the setting time of AH Plus. The incorporation of diluted rhodamine decreased the setting time and increased the flowability of MTA Fillapex. Diluted rhodamine promoted pH reduction of AH Plus after 24 h and dry rhodamine after 7 days. Rhodamine incorporation promoted pH reduction after 30 days for MTA Fillapex. Solubility was not affected. In conclusion, the incorporation of diluted rhodamine changed the properties of MTA Fillapex, and the incorporation of dry rhodamine changed the properties of AH Plus. Previous dilution of rhodamine did not severely compromise the physicochemical properties of AH Plus and may be suggested to assess its penetrability.
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Affiliation(s)
- Maybell Tedesco
- Department of Dentistry, Federal University of Santa Catarina, Florianopolis, SC, Brazil
| | - Filipe Colombo Vitali
- Department of Dentistry, Federal University of Santa Catarina, Florianopolis, SC, Brazil
| | - Eduardo Antunes Bortoluzzi
- Department of Diagnosis & Oral Health, School of Dentistry, University of Louisville, Louisville, KY, USA
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da Rosa AF, Amaral TS, Paz Dotto ME, Goulart TS, Rossetto HL, Bortoluzzi EA, Teixeira CDS, Garcia LDFR. Physicochemical properties of a calcium aluminate cement containing nanoparticles of zinc oxide. Restor Dent Endod 2023; 48:e3. [PMID: 36875816 PMCID: PMC9982238 DOI: 10.5395/rde.2023.48.e3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/22/2022] [Revised: 09/27/2022] [Accepted: 10/04/2022] [Indexed: 12/24/2022] Open
Abstract
Objectives This study evaluated the effect of different nanoparticulated zinc oxide (nano-ZnO) and conventional-ZnO ratios on the physicochemical properties of calcium aluminate cement (CAC). Materials and Methods The conventional-ZnO and nano-ZnO were added to the cement powder in the following proportions: G1 (20% conventional-ZnO), G2 (15% conventional-ZnO + 5% nano-ZnO), G3 (12% conventional-ZnO + 3% nano-ZnO) and G4 (10% conventional-ZnO + 5% nano-ZnO). The radiopacity (Rad), setting time (Set), dimensional change (Dc), solubility (Sol), compressive strength (Cst), and pH were evaluated. The nano-ZnO and CAC containing conventional-ZnO were also assessed using scanning electron microscopy, transmission electron microscopy, and energy-dispersive X-ray spectroscopy. Radiopacity data were analyzed by the 1-way analysis of variance (ANOVA) and Bonferroni tests (p < 0.05). The data of the other properties were analyzed by the ANOVA, Tukey, and Fisher tests (p < 0.05). Results The nano-ZnO and CAC containing conventional-ZnO powders presented particles with few impurities and nanometric and micrometric sizes, respectively. G1 had the highest Rad mean value (p < 0.05). When compared to G1, groups containing nano-ZnO had a significant reduction in the Set (p < 0.05) and lower values of Dc at 24 hours (p < 0.05). The Cst was higher for G4, with a significant difference for the other groups (p < 0.05). The Sol did not present significant differences among groups (p > 0.05). Conclusions The addition of nano-ZnO to CAC improved its dimensional change, setting time, and compressive strength, which may be promising for the clinical performance of this cement.
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Affiliation(s)
- Amanda Freitas da Rosa
- Department of Dentistry - Endodontics Division, Health Sciences Center, Federal University of Santa Catarina, Florianópolis, SC, Brazil
| | - Thuany Schmitz Amaral
- Department of Dentistry - Endodontics Division, Health Sciences Center, Federal University of Santa Catarina, Florianópolis, SC, Brazil
| | - Maria Eduarda Paz Dotto
- Department of Dentistry - Endodontics Division, Health Sciences Center, Federal University of Santa Catarina, Florianópolis, SC, Brazil
| | - Taynara Santos Goulart
- Department of Dentistry - Endodontics Division, Health Sciences Center, Federal University of Santa Catarina, Florianópolis, SC, Brazil
| | | | - Eduardo Antunes Bortoluzzi
- Department of Diagnosis & Oral Health, Endodontics Division, University of Louisville, Louisville, KY, USA
| | - Cleonice da Silveira Teixeira
- Department of Dentistry - Endodontics Division, Health Sciences Center, Federal University of Santa Catarina, Florianópolis, SC, Brazil
| | - Lucas da Fonseca Roberti Garcia
- Department of Dentistry - Endodontics Division, Health Sciences Center, Federal University of Santa Catarina, Florianópolis, SC, Brazil
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de Lima Dias-Junior LC, Corrêa M, da Silveira Teixeira C, de Souza DL, Tay FR, Estrela C, da Fonseca Roberti Garcia L, Bortoluzzi EA. Development and validation of a method for creating incomplete vertical root fracture in extracted teeth. Odontology 2023:10.1007/s10266-023-00787-z. [PMID: 36708433 DOI: 10.1007/s10266-023-00787-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2022] [Accepted: 01/19/2023] [Indexed: 01/29/2023]
Abstract
The present study reported a method for inducing incomplete root fracture in human extracted teeth for the purpose of evaluating the merits of different diagnostic imaging techniques. Thirty-five single-rooted teeth were inspected under magnification and transillumination to exclude previously fractured teeth. Tooth crowns were removed, and the root canals were prepared up to the ProTaper Next X4 (40.06) file. Each root was lined with wax and embedded in a polystyrene resin block. The setup was attached to a universal testing machine for pressing a customized conical wedge (diameter at tip: 0.6 mm; taper: 0.2 mm/mm) into the instrumented canal with a 2 kN load at 5 mm/min. The machine was programmed to stop after a sudden 10% drop in loading force. Each specimen was removed from the resin block and inspected under × 20 magnification and transillumination to identify the fracture characteristics (pattern, surfaces and root-third affected). The gap width of each specimen was measured at different locations along the fracture line. The protocol induced incomplete vertical root fractures in all specimens. Fracture widths were < 100 μm in all specimens (mean gap width: 34.9 μm). The proposed methodology was successful in inducing incomplete vertical root fractures with characteristics that resemble the clinical presentation of these conditions. The method is easy to execute, highly reproducible and helps to minimize bias in laboratory studies that aims to mimic vertical root fractures.
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Affiliation(s)
- Luiz Carlos de Lima Dias-Junior
- Department of Dentistry-Endodontics Division, Health Sciences Center, Federal University of Santa Catarina, Campus Reitor João David Ferreira Lima, Florianópolis, Santa Catarina, Brazil
| | - Marcio Corrêa
- Department of Dentistry-Endodontics Division, Health Sciences Center, Federal University of Santa Catarina, Campus Reitor João David Ferreira Lima, Florianópolis, Santa Catarina, Brazil
| | - Cleonice da Silveira Teixeira
- Department of Dentistry-Endodontics Division, Health Sciences Center, Federal University of Santa Catarina, Campus Reitor João David Ferreira Lima, Florianópolis, Santa Catarina, Brazil
| | - Diego Leonardo de Souza
- Department of Dentistry-Endodontics Division, Health Sciences Center, Federal University of Santa Catarina, Campus Reitor João David Ferreira Lima, Florianópolis, Santa Catarina, Brazil
| | - Franklin R Tay
- Department of Endodontics, The Dental College of Georgia, Augusta University, Augusta, GA, USA
| | - Carlos Estrela
- Department of Endodontics, School of Dentistry, Federal University of Goiás, Goiânia, Brazil
| | - Lucas da Fonseca Roberti Garcia
- Department of Dentistry-Endodontics Division, Health Sciences Center, Federal University of Santa Catarina, Campus Reitor João David Ferreira Lima, Florianópolis, Santa Catarina, Brazil.
| | - Eduardo Antunes Bortoluzzi
- Department of Diagnosis & Oral Health, Division of Endodontics, School of Dentistry, University of Louisville, Louisville, KY, USA
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Jesus LSD, Reis TLDS, Machado BGMDM, Costa ALMD, Savaris JM, Volpato CAM, Bortoluzzi EA, Teixeira CDS, Fernandes PCDSV, Garcia LDFR. Dental and composite resin discoloration induced by different hydraulic calcium silicate-based cements: two-year in vitro assessment. J Appl Oral Sci 2023; 31:e20220444. [PMID: 37132699 PMCID: PMC10159045 DOI: 10.1590/1678-7757-2022-0444] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2022] [Accepted: 03/12/2023] [Indexed: 05/04/2023] Open
Abstract
Few long-term studies assess the discoloration induced by hydraulic calcium silicate-based cement on dental structures. In addition, as far as we know, no long-term study has assessed the discoloration induced by these cement on composite resin. This in vitro study aimed to assess, during a period of two years, the discoloration potential of different hydraulic calcium silicate-based cements (hCSCs) on the enamel/dentin structure and composite resin restoration. A total of 40 enamel/dentin discs were obtained from bovine incisors, and 40 composite resin discs (10 mm in diameter × 2 mm thick) were fabricated. A 0.8 mm-deep cavity was made in the center of each disc and filled with the following hCSCs (n=10): Original MTA (Angelus); MTA Repair HP (Angelus); NeoMTA Plus (Avalon); and Biodentine (Septodont). An initial color measurement was performed (T0 - baseline). After 7, 15, 30, 45, 90, 300 days, and two years, new color measurements were performed to determine the color (ΔE00), lightness (ΔL'), chroma (ΔC'), hue differences (ΔH'), and whiteness index (WID). For enamel/dentin, the ΔE00 was significant among groups and periods (p<0.05). NeoMTA Plus had the greatest ΔE00. The NeoMTA Plus group had the greatest ΔE00 after two years for composite resin. Significant reduction in lightness was observed for all groups after two years (p<0.05). The most significant WID values were observed after 30 days for Biodentine (enamel/dentin) and MTA Repair HP groups (composite resin) (p<0.05). The hCSCs changed the colorimetric behavior of both substrates, leading to greater darkening over time. The Bi2O3 in the Original MTA seems relevant in the short periods of color change assessment.
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Affiliation(s)
- Lucas Santos de Jesus
- Universidade Federal de Santa Catarina, Centro de Ciências da Saúde, Departmento de Odontologia - Endodontia, Florianópolis, SC, Brasil
| | | | | | | | - Julia Menezes Savaris
- Universidade Federal de Santa Catarina, Centro de Ciências da Saúde, Departmento de Odontologia - Endodontia, Florianópolis, SC, Brasil
| | - Claudia Angela Maziero Volpato
- Universidade Federal de Santa Catarina, Centro de Ciências da Saúde, Departmento de Odontologia - Endodontia, Florianópolis, SC, Brasil
| | - Eduardo Antunes Bortoluzzi
- University of Louisville, Department of Diagnosis & Oral Health - Endodontics Division, Louisville, KY, USA
| | - Cleonice da Silveira Teixeira
- Universidade Federal de Santa Catarina, Centro de Ciências da Saúde, Departmento de Odontologia - Endodontia, Florianópolis, SC, Brasil
| | | | - Lucas da Fonseca Roberti Garcia
- Universidade Federal de Santa Catarina, Centro de Ciências da Saúde, Departmento de Odontologia - Endodontia, Florianópolis, SC, Brasil
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Henriques DHN, Alves AMH, Kuntze MM, Garcia LDFR, Bortoluzzi EA, Teixeira CDS. Effect of dental tissue thickness on the measurement of oxygen saturation by two different pulse oximeters. Braz Dent J 2022; 33:26-34. [DOI: 10.1590/0103-6440202204903] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/03/2022] [Accepted: 07/18/2022] [Indexed: 11/06/2022] Open
Abstract
Abstract This study aimed to evaluate the influence of different dental tissue thickness on the measurement of oxygen saturation (SpO2) levels in high (HP) and low (LP) blood perfusion by comparing the values obtained from two different pulse oximeters (POs) - BCI and Sense 10. Thirty freshly extracted human teeth had their crowns interposed between the POs and an optical simulator, which emulated the SpO2 and heart beats per minute (bpm) at HP (100% SpO2/75 bpm) and LP (86% SpO2/75 bpm) modes. Afterwards, the palatine/lingual surfaces of the dental crowns were worn with diamond drills. The reading of SpO2 was performed again using the POs alternately through the buccal surface of each dental crown. Data were analyzed by the Wilcoxon, Mann-Whitney and Kendall Tau-b tests (α=5%). The results showed significant difference at the HP and LP modes in the SpO2 readouts through the different dental thicknesses with the use of BCI, and at the LP mode with the use of Sense 10, which had a significant linear correlation (p<0.0001) and lower SpO2 readout values in relation to the increase of the dental thickness. Irrespective of tooth thickness, Sense 10 had significantly higher readout values (p<0.0001) than BCI at both perfusion modes. The interposition of different thicknesses of enamel and dentin influenced the POs measurement of SpO2, specially at the low perfusion mode. The POs were more accurate in SpO2 measurement when simulated perfusion levels were higher.
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Vitali FC, Santos PS, Cardoso M, Massignan C, da Fonseca Roberti Garcia L, Bortoluzzi EA, da Silveira Teixeira C. Are electronic apex locators accurate in determining working length in primary teeth pulpectomies? A systematic review and meta-analysis of clinical studies. Int Endod J 2022; 55:989-1009. [PMID: 35808837 DOI: 10.1111/iej.13798] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/10/2022] [Revised: 07/03/2022] [Accepted: 07/04/2022] [Indexed: 11/26/2022]
Abstract
BACKGROUND The lack of a well-defined apical constriction in primary teeth raises concerns regarding the accuracy of electronic apex locators (EALs) for measuring working length. OBJECTIVES To evaluate the accuracy of EALs in determining working length in primary teeth pulpectomies. METHODS Two reviewers searched ten databases up to September 2021. Clinical studies evaluating the accuracy of the electronic measurement of working length in primary teeth pulpectomies were included. Studies without a comparison group, with samples smaller than ten root canals, and that did not use a multiple frequency EAL were excluded. A meta-analysis was conducted to assess the paired differences in mean lengths between measurements obtained by electronic and comparative methods. In addition, a meta-analysis of proportion was applied according to the level of difference between the measures. The risk of bias and applicability of the studies were assessed using the QUADAS-2 tool. The certainty of evidence was assessed with the Grading of Recommendations, Assessment, Development and Evaluation (GRADE) approach. RESULTS Twenty-nine studies were included in the qualitative analysis and twenty-three in the quantitative analysis. The methods of comparison for the electronic measurement were the radiographic method, radiovisiographic, scanning electron microscopy, and direct visualization. The meta-analysis showed that the electronic measurement tends to be shorter than radiographic measurement, while the other methods showed no difference. The proportion analysis showed a higher pooled proportion of difference values between electronic and comparative measurements within -0.5 to +0.5 mm (69.31%). The certainty of the evidence suggested very low confidence in estimating the outcome. DISCUSSION The results of this review denote a good performance of the EALs in determining working length in primary teeth pulpectomies. However, these results are based on clinical studies with low methodological quality and high heterogeneity, which require careful interpretation for clinical practice. CONCLUSIONS Although the results suggest acceptable accuracy of EALs in determining working length in primary teeth pulpectomies, the low quality of the included studies and the very low certainty of the evidence require clinicians to interpret these results with caution. More robust evidence is required to support that these devices are accurate for primary teeth.
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Affiliation(s)
- Filipe Colombo Vitali
- Postgraduate Program in Dentistry, Federal University of Santa Catarina, Florianopolis, Santa Catarina, Brazil
| | - Pablo Silveira Santos
- Postgraduate Program in Dentistry, Federal University of Santa Catarina, Florianopolis, Santa Catarina, Brazil
| | - Mariane Cardoso
- Department of Dentistry, Federal University of Santa Catarina, Florianopolis, Santa Catarina, Brazil
| | - Carla Massignan
- Department of Dentistry, University of Brasilia, Brasilia, Distrito Federal, Brazil
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Araújo LD, Goulart TS, Gil ACK, Schuldt DPV, Coelho BS, Figueiredo DDR, Garcia LDFR, Almeida JD. Do alternative scaffolds used in regenerative endodontics promote better root development than that achieved with blood clots? Braz Dent J 2022; 33:22-32. [PMID: 35508033 PMCID: PMC9645157 DOI: 10.1590/0103-6440202204746] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/24/2021] [Accepted: 02/25/2022] [Indexed: 02/08/2023] Open
Abstract
The aim of this integrative review was to identify whether alternative scaffolds
used in regenerative endodontics contribute to better root development, in
relation to the increase in root length and thickness of dentin walls, compared
with blood clot (BC) scaffolds. The literature search was conducted in PubMed,
SciELO and Lilacs databases, using descriptors related to the topic. After
applying the eligibility criteria, 11 articles were selected and analyzed
according to the proposed aim. Five clinical and six in vivo
studies, conducted in animals, compared different types of alternative scaffolds
with BCs, with emphasis on platelet-rich plasma (PRP) and platelet-rich fibrin
(PRF). All scaffolds, alternative or BC, promoted an increase in root length and
dentin wall thickness, with varying percentages of increase between studies. In
general, there was a significant increase in root length and dentin thickness
promoted by PRF and PRP scaffolds, compared with BC. It was concluded that the
majority of the scaffolds tested contributed to the increase in root length and
thickness of dentin walls, with emphasis on PRF and PRP.
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Affiliation(s)
| | - Taynara Santos Goulart
- University of Southern Santa Catarina, Brazil; Federal University of Santa Catarina, Brazil
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Suzuki EH, Sponchiado-Júnior EC, Pandolfo MT, Garcia LDFR, Carvalho FMAD, Marques AAF. Shaping Ability of Reciprocating and Rotary Systems After Root Canal Retreatment: a CBCT Study. Braz Dent J 2022; 33:12-21. [PMID: 35508032 PMCID: PMC9645160 DOI: 10.1590/0103-6440202204772] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2021] [Accepted: 02/25/2022] [Indexed: 11/30/2022] Open
Abstract
The purpose of this in vitro study was to evaluate the shaping ability of
reciprocating and continuous rotary systems after root canal retreatment. After
preparation and root canal filling, mesial canals of 54 mandibular molars were
distributed into 3 groups (n=18), according to the filling material removal and
re-instrumentation protocols: WOG group - WaveOne Gold system; PTN group -
ProTaper Next system; and PTU group - ProTaper Universal system. Cone-beam
computed tomographic (CBCT) images acquisition of the mesial root canals was
performed at different moments: (1) before instrumentation (unprepared root
canals), (2) after preparation and filling, (3) after filling material removal
and (4) re-instrumentation. The apical transportation (AT), centering ability
(CA) and change in root canal diameter were assessed by CBCT analysis. The
remaining filling material quantification was performed by radiographic
examination. The statistical analyses were performed using the 3-way ANOVA,
Tukey-Kramer, Kruskal-Wallis and Dunn multiple Comparison tests (p<0.05). The
tested instruments did not show full CA (=1.0). PTN group had greater AT at the
5th mm in comparison with the WOG group (p<0.05). After re-instrumentation,
WOG group had greater root canal diameter change at the 1st and 5th mm than PTN
and PTU groups (p<0.05). There was no significant difference among groups
when comparing the amount of remaining filling material after re-instrumentation
(p>0.05). The tested systems provided minimal alteration in root canal
morphology at the apical portion after root canal retreatment. However, WOG
promoted greater change in root canal diameter.
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Gonçalves WF, Garcia LDFR, Vieira-Schuldt DP, Bortoluzzi EA, Dias-Júnior LCDL, Teixeira CDS. Guided Endodontics in Root Canals with Complex Access: Two Case Reports. Braz Dent J 2022; 32:115-123. [PMID: 35019015 DOI: 10.1590/0103-6440202104537] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2021] [Accepted: 11/05/2021] [Indexed: 01/17/2023] Open
Abstract
This article reported two clinical cases in which the guided endodontics was used to perform the access to the root canals. The first case presents a 40-year-old female with a history of pain related to the left maxillary canine. After radiographic examination, the presence of severe calcification up to the apical third of the root canal, associated with a periapical radiolucency, was noted. In the second case, an 85-year-old male was referred to our service with pain upon palpation, at the right mandibular first molar. The radiographic images revealed the presence of endodontic treatment and a fiberglass post in the distal root canal, which was associated with extrusion of the filling material and a periapical lesion. The 3D-guides were planned based on cone beam computed tomography and intraoral digital scanning, which were aligned using a specific software. Therefore, implant drills could be guided up to the root canal length required for each case. In the first case, a surgical root canal was created and the patient was free of signs and symptoms after the treatment was completed. In the second case, it was observed that the fiber post was worn by the drill, allowing free access to the filling material. It was possible to perform the endodontic reintervention in a more predictable way and in less time. In both cases, the use of the guided endodontics allowed the preservation of a large part of the dental structure. The procedures were performed faster, without the occurrence of fractures and perforations.
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Affiliation(s)
- Wesley Fernandes Gonçalves
- Department of Dentistry - Endodontics Division, Health Sciences Center, Federal University of Santa Catarina, Florianópolis, Santa Catarina, Brazil
| | - Lucas da Fonseca Roberti Garcia
- Department of Dentistry - Endodontics Division, Health Sciences Center, Federal University of Santa Catarina, Florianópolis, Santa Catarina, Brazil
| | - Daniela Peressoni Vieira-Schuldt
- Department of Dentistry - Endodontics Division, Health Sciences Center, Federal University of Santa Catarina, Florianópolis, Santa Catarina, Brazil
| | - Eduardo Antunes Bortoluzzi
- Department of Dentistry - Endodontics Division, Health Sciences Center, Federal University of Santa Catarina, Florianópolis, Santa Catarina, Brazil
| | - Luiz Carlos de Lima Dias-Júnior
- Department of Dentistry - Endodontics Division, Health Sciences Center, Federal University of Santa Catarina, Florianópolis, Santa Catarina, Brazil
| | - Cleonice da Silveira Teixeira
- Department of Dentistry - Endodontics Division, Health Sciences Center, Federal University of Santa Catarina, Florianópolis, Santa Catarina, Brazil
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Pandolfo MT, Rover G, Bortoluzzi EA, Teixeira CDS, Rossetto HL, Fernades PCDSV, Côrte-Real ISG, Carvalho SMF, Garcia LDFR. Fracture Resistance of Simulated Immature Teeth Reinforced with Different Mineral Aggregate-Based Materials. Braz Dent J 2021; 32:21-31. [PMID: 34755787 DOI: 10.1590/0103-6440202104236] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/20/2021] [Accepted: 07/08/2021] [Indexed: 11/22/2022] Open
Abstract
This study assessed the fracture resistance of simulated immature teeth reinforced with calcium aluminate cement (CAC) or mineral trioxide aggregate (MTA) containing calcium carbonate nanoparticles (nano-CaCO3). The microstructural arrangement of the cements and their chemical constitution were also evaluated. Forty-eight canines simulating immature teeth were distributed into 6 groups (n=8): Negative control - no apical plug or root canal filling; CAC - apical plug with CAC; CAC/nano-CaCO3 - apical plug with CAC+5% nano-CaCO3; MTA - apical plug with MTA; MTA/nano-CaCO3 - apical plug with MTA+5% nano-CaCO3; and Positive control - root canal filling with MTA. The fracture resistance was evaluated in a universal testing machine. Samples of the cements were analyzed under Scanning Electron Microscope (SEM) to determine their microstructural arrangement. Chemical analysis of the cements was performed by Energy Dispersive X-ray Spectroscopy (EDS). The fracture resistance of CAC/nano-CaCO3 was significantly higher than the negative control (p<0.05). There was no significant difference among the other groups (p>0.05). Both cements had a more regular microstructure with the addition of nano-CaCO3. MTA samples had more calcium available in soluble forms than CAC. The addition of nano-CaCO3 to CAC increased the fracture resistance of teeth in comparison with the non-reinforced teeth. The microstructure of both cements containing nano-CaCO3 was similar, with a more homogeneous distribution of lamellar- and prismatic-shaped crystals. MTA had more calcium available in soluble forms than CAC.
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Affiliation(s)
- Mariana Travi Pandolfo
- Department of Dentistry - Endodontics Division, Health Sciences Center, Federal University of Santa Catarina, Florianópolis, SC, Brazil
| | - Gabriela Rover
- Department of Dentistry - Endodontics Division, Health Sciences Center, Federal University of Santa Catarina, Florianópolis, SC, Brazil
| | - Eduardo Antunes Bortoluzzi
- Department of Dentistry - Endodontics Division, Health Sciences Center, Federal University of Santa Catarina, Florianópolis, SC, Brazil
| | - Cleonice da Silveira Teixeira
- Department of Dentistry - Endodontics Division, Health Sciences Center, Federal University of Santa Catarina, Florianópolis, SC, Brazil
| | | | | | | | - Sandra Maria Fernandes Carvalho
- CEMMPRE - Centre for Mechanical Engineering, Materials and Processes, University of Coimbra, Coimbra, Portugal.,CF-UM-UP - Centre of Physics of the Universities of Minho and Porto, Guimarães, Portugal
| | - Lucas da Fonseca Roberti Garcia
- Department of Dentistry - Endodontics Division, Health Sciences Center, Federal University of Santa Catarina, Florianópolis, SC, Brazil
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Abstract
Currently, minimally invasive restorations could be made in dentistry applying adhesive materials and adhesion principles to the dental structures. Following this philosophy, endodontic interventions have been avoided largely, preserving hard tissues, and maintaining dental vitality. Advances in biologically favorable bioactive materials enabled clinicans to induce repair and regeneration of dental tissues. Such materials are primarily used for pulp protection and cementation of indirect restorations. This review highlights current bioactive materials available, principles of bioactivity and their mechanisms of action.
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31
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de Jesus LS, Volpato CAM, Bortoluzzi EA, da Silveira Teixeira C, Rossetto HL, de Carvalho Panzeri Pires-de-Souza F, da Fonseca Roberti Garcia L. Tooth discoloration induced by the different phases of a calcium aluminate cement: One-year assessment. J ESTHET RESTOR DENT 2021; 33:999-1009. [PMID: 33929073 DOI: 10.1111/jerd.12739] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/19/2021] [Revised: 03/16/2021] [Accepted: 04/19/2021] [Indexed: 11/30/2022]
Abstract
OBJECTIVES To assess the discoloration of teeth treated with the different phases of calcium aluminate cement (CAC), in comparison with the conventional CAC and mineral trioxide aggregate (MTA). MATERIALS AND METHODS Fifty bovine incisors were prepared and filled. Two millimeters of the filling was removed to fabricate a cervical plug with the following cements (n=10): CA(CaO.Al2 O3 ); CA2 (CaO.2Al2 O3 ); C12 A7 (12CaO.7Al2 O3 ); CAC and MTA. The initial color measurement was performed and after 7, 15, 30, 45, 90, 180, and 365 days new color measurements were performed to determine the color (ΔE00 ), lightness (ΔL'), chroma (ΔC'), hue differences (ΔH'), and the whiteness index (WID ). RESULTS ΔE00 was significant for groups (p = 0.036) and periods (p < 0.05). The greater ΔE00 was observed after 365 days for CAC (12.8). C12 A7 (7.2) had the smallest ΔE00 . ΔL' and ΔC' were significant for groups and periods (p < 0.05). ΔH' was significant for periods (p < 0.05). After 365 days, significant reduction in lightness was observed for all groups. For CA, CA2 , CAC, and MTA groups, the WID values decreased over time (p < 0.05). CONCLUSIONS The tested cements changed the color behavior of the samples, resulting in greater teeth darkening over time. CLINICAL SIGNIFICANCE There is no long-term study assessing the discoloration induced by the different phases of CAC.
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Affiliation(s)
- Lucas Santos de Jesus
- Department of Dentistry, Health Sciences Center, Federal University of Santa Catarina, Florianópolis, Brazil
| | | | - Eduardo Antunes Bortoluzzi
- Department of Dentistry, Health Sciences Center, Federal University of Santa Catarina, Florianópolis, Brazil
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Bortoluzzi EA, da Silveira Teixeira C, Broon NJ, Consolaro A, Pinheiro TN, da Fonseca Roberti Garcia L, Pashley DH, Bramante CM. Tissue response to white mineral aggregate-based cement containing barium sulfate as alternative radiopacifier: A randomized controlled animal study. Microsc Res Tech 2021; 84:705-711. [PMID: 33089621 DOI: 10.1002/jemt.23629] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/18/2020] [Revised: 10/05/2020] [Accepted: 10/10/2020] [Indexed: 11/07/2022]
Abstract
The purpose of this study was to investigate the tissue reaction stimulated by BaSO4 - and Bi2 O3 -containing White MTA Angelus, in comparison with Bi2 O3 -containing white Portland cement, and white ProRoot MTA. Thirty-six adult male Wistar rats (Rattus norvegicus), weighing between 250 and 300 g, were distributed into three groups (n = 12) in accordance with the period of sacrifice (15, 30, and 60 days). Four polyethylene tubes filled with the tested cements were implanted into the dorsum of each rat. Lateral wall of the tubes served as the negative control. After the experimental periods, the animals were euthanized by overdose of pentobarbital anesthetic solution, and the specimens were prepared for microscopic analysis under ×50, ×100, and ×400 magnifications. Inflammatory scores (0-3) were used to grade the tissue reaction. Data were analyzed by the Kruskal-Wallis test and Dunn's test for individual comparisons (p < .05). A mild to moderate inflammatory tissue reaction was observed at the 15-day period, which decreased over the course of the periods for all cements, except for Portland cement. There was no significant difference among the tissue responses for ProRoot MTA, BaSO4 - and Bi2 O3 -containing White MTA Angelus at the 60-day period (p > .05). The Portland group had moderate inflammatory reaction at the final period of analysis, which was statistically different when compared to the other groups (p < .05). The microscopic findings of this animal study suggest that the addition of BaSO4 to White MTA Angelus does not hampers the biocompatibility of the cement.
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Affiliation(s)
- Eduardo Antunes Bortoluzzi
- Department of Dentistry - Endodontics Division, Health Sciences Center, Federal University of Santa Catarina, Florianópolis, Santa Catarina, Brazil
| | - Cleonice da Silveira Teixeira
- Department of Dentistry - Endodontics Division, Health Sciences Center, Federal University of Santa Catarina, Florianópolis, Santa Catarina, Brazil
| | - Norberto J Broon
- Centro Universitario de Ciencias de la Salud, Universidad de Guadalajara, Mexico City, Mexico
| | - Alberto Consolaro
- Department of Surgery, Stomatology, Pathology and Radiology, Bauru Dental School, University of São Paulo, Bauru, São Paulo, Brazil
| | - Tiago Novaes Pinheiro
- Superior School of Health Sciences, State University of Amazonas, Manaus, Amazonas, Brazil
| | - Lucas da Fonseca Roberti Garcia
- Department of Dentistry - Endodontics Division, Health Sciences Center, Federal University of Santa Catarina, Florianópolis, Santa Catarina, Brazil
| | - David H Pashley
- Department of Oral Biology and Diagnostic Sciences, The Dental College of Georgia, Augusta University, 1120 15th Street, Augusta, Georgia, USA
| | - Clovis Monteiro Bramante
- Department of Dentistry, Endodontics and Dental Materials, Bauru Dental School, University of São Paulo, Bauru, São Paulo, Brazil
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Souza Júnior CD, Machado R, Batts RA, Garcia LDFR. Inferior alveolar nerve paraesthesia after overfilling into the mandibular canal, confirmed by cone-beam computed tomography: a case report. BDS 2021. [DOI: 10.14295/bds.2021.v24i2.2421] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022] Open
Abstract
The filling material should be restricted to the root canal, and not extend to the periradicular tissues. Overextension occurs when there is an overflow of gutta-percha and sealer, whereas overfilling refers to the overflow only of sealer beyond the apical foramen. Both may cause several negative clinical consequences. Nevertheless, an accurate diagnosis of where they occurred cannot always be performed by conventional radiographic examination, because of the two-dimensional aspect of the image. This paper describes a clinical case of labiomandibular paraesthesia after overfilling into the mandibular canal (MC), as diagnosed by cone-beam computed tomography (CBCT), later used to perform the treatment planning. A 34-year-old Caucasian female patient sought a private dental clinic complaining of pain in the right mandibular posterior region. After taking the anamnesis and performing clinical and radiographic exams, the patient was diagnosed with pulp necrosis in the second right mandibular molar, and underwent root canal treatment. The final radiography showed overextension or overfilling, probably into the MC. About 2 hours after the procedure, the patient reported paraesthesia of her lower right lip and chin. A CBCT confirmed a small overfilling into the MC. For this reason, vitamin B12 was prescribed as the first treatment option. After 7 days, the patient reported a significant decrease in paraesthesia, and was completely normal after 15 days. This case report shows that CBCT is an effective radiographic diagnostic tool that can be used as an alternative in clinical cases of labiomandibular paraesthesia caused by overextension or overfilling.
Keywords
Endodontic treatment; Overfilling; Paraesthesia; Conebeam computed tomography.
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Machado R, Koetz R, Comparin D, Alberton LR, da Fonseca Roberti Garcia L, Xavier da Silva Neto U. Correlation among Root Canal Configuration, Quality of Filling, and Its Sealability. Eur J Dent 2021; 15:568-573. [PMID: 33622010 PMCID: PMC8382461 DOI: 10.1055/s-0041-1724158] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022] Open
Abstract
Objective
This study aimed to evaluate the existence of possible correlations among root canal configuration, quality of filling, and its sealability.
Materials and Methods
Sixty human mandibular central incisors were selected for this study. The teeth were prepared with the Profile 04 system up to instrument 35/0.04 and irrigated with 2.5 mL of 2.5% sodium hypochlorite at each instrument change. Root canal filling was performed by the lateral compaction technique, using gutta-percha and an epoxy resin-based sealer (AH Plus) labeled with 0.1% Rhodamine B dye. Afterward, the specimens were submitted to fluid filtration tests to assess the sealability of the filling. Cross-sections were obtained at −3, −6, and −8 mm from the root apex and submitted to a metallographic treatment to determine the root canal configuration and the percentage of gutta-percha filled areas. The data were statistically analyzed by the Grubbs test. Pairs of correlations were analyzed by applying the Spearman test at a level of significance of 5%.
Results
No correlation was observed among the analyzed variables as follows: root canal configuration versus filling quality (Spearman’s rho = 0.031); filling quality versus sealability (Spearman’s rho = 0.219); and root canal configuration versus sealability (Spearman’s rho = 0.184).
Conclusion
The root canal configuration did not affect the quality of the filling and its sealability.
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Affiliation(s)
- Ricardo Machado
- Department of Endodontics, School of Health and Bioscience, Pontifical Catholic University of Paraná, Curitiba, Paraná, Brazil
| | - Ricardo Koetz
- Department of Endodontics, School of Dentistry, Paranaense University, Francisco Beltrão, Paraná, Brazil
| | - Daniel Comparin
- Department of Endodontics, School of Dentistry, Paranaense University, Francisco Beltrão, Paraná, Brazil
| | - Luiz Rômulo Alberton
- Department of Veterinary Medicine and Graduate Program in Animal Science, Paranaense University, Umuarama, Paraná, Brazil
| | - Lucas da Fonseca Roberti Garcia
- Department of Dentistry, Endodontics Division, Health Sciences Center, Federal University of Santa Catarina, Florianópolis, Santa Catarina, Brazil
| | - Ulisses Xavier da Silva Neto
- Department of Endodontics, School of Health and Bioscience, Pontifical Catholic University of Paraná, Curitiba, Paraná, Brazil
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da Silva Machado AP, Câncio Couto de Souza AC, Lima Gonçalves T, Franco Marques AA, da Fonseca Roberti Garcia L, Antunes Bortoluzzi E, Acris de Carvalho FM. Does the ultrasonic activation of sealer hinder the root canal retreatment? Clin Oral Investig 2021; 25:4401-4406. [PMID: 33392803 DOI: 10.1007/s00784-020-03752-0] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/01/2020] [Accepted: 12/18/2020] [Indexed: 11/30/2022]
Abstract
OBJECTIVES To evaluate if the ultrasonic activation of sealer hinders the root canal retreatment. MATERIALS AND METHODS Thirty mandibular premolars were prepared using the ProTaper Universal system (Dentsply) until the instrument F3 (0.30/0.09). The canals were distributed into 2 groups (n = 15), according to the filling technique: NUact group - sealer without ultrasonic activation + gutta-percha cones and Uact group - sealer with ultrasonic activation + gutta-percha cones. The canals were re-instrumented with Largo burs, followed by the instrument R50 (0.50/0.05) of the Reciproc system. The time required to perform re-instrumentation was recorded (s). The roots were longitudinally cleaved, and the total area of root canal and remaining filling material were quantified (%). The ANOVA test was applied to the data and complemented by Student's t test (P < 0.05). RESULTS Uact group had higher percentage of remaining filling material than NUact group (P < 0.05). When the root thirds were considered, there was statistically significant difference only for Uact group at the apical third (P < 0.05). There was no difference between groups regarding the time required to perform re-instrumentation (P > 0.05). CONCLUSIONS Ultrasonic activation of sealer leads to a higher percentage of remaining filling material attached to the root canal walls. However, it did not affect the retreatment time. CLINICAL SIGNIFICANCE Ultrasonic activation increases sealer penetration into dentinal tubules, improving its resistance to dislodgement. However, there is no scientific evidence to prove if ultrasonic activation of sealer hinders its removal when root canal retreatment is necessary.
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Affiliation(s)
| | | | | | - André Augusto Franco Marques
- Superior School of Health Sciences, State University of Amazonas, Manaus, AM, Brazil
- School of Dentistry, Federal University of Amazonas, Manaus, AM, Brazil
| | - Lucas da Fonseca Roberti Garcia
- Department of Dentistry - Endodontics Division, Health Sciences Center, Federal University of Santa Catarina, Campus Reitor João David Ferreira Lima, Florianópolis, Santa Catarina, 88040-900, Brazil.
| | - Eduardo Antunes Bortoluzzi
- Department of Dentistry - Endodontics Division, Health Sciences Center, Federal University of Santa Catarina, Campus Reitor João David Ferreira Lima, Florianópolis, Santa Catarina, 88040-900, Brazil
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Bunn DL, Corrêa M, Dutra KL, Schimdt TF, Teixeira CDS, Garcia LDFR, Bortoluzzi EA. Accuracy of Cone-Beam Computed Tomography in Measuring the Thickness of Radicular Dentin. Braz Dent J 2020; 31:516-522. [PMID: 33146336 DOI: 10.1590/0103-6440202002938] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/02/2019] [Accepted: 04/02/2020] [Indexed: 11/22/2022] Open
Abstract
The purpose of this study was to evaluate the accuracy of Cone-Beam Computed Tomography (CBCT) in measuring radicular dentin thickness focused on intraradicular post placement planning treatment. Ten single-rooted human premolars were selected. The teeth were divided into three segments (cervical, middle and apical). The coronal face of the apical and middle sections was selected for the dentin thickness assessment; which was measured from the external root surface to the root canal wall, on the buccal, lingual, mesial, and distal surfaces of each tooth. In situ anatomical measurement was the reference standard, and the corresponding axial CBCT imaging were evaluated by the i-CAT software. The one-way ANOVA test and the Bonferroni post hoc test were applied to compare the groups (p>0.05). CBCT imaging measurements (p=0.003) overestimated the radicular dentin thickness compared to the reference standard. Descriptive analysis showed that the greatest difference between the reference standard and the tomographic measurement means were 0.20 mm. One-way ANOVA test found the statistical significant difference among group's measurements. Bonferroni correction demonstrated statistically significant difference only related lingual surface for the CBCT imaging measurements. CBCT imaging measurements overestimated the radicular dentin thickness. However, the measurement difference was clinically acceptable.
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Affiliation(s)
- Daiana Lopes Bunn
- Department of Dentistry, Endodontics Division, Health Sciences Center, UFSC - Universidade Federal de Santa Catarina, Florianópolis, SC, Brazil
| | - Márcio Corrêa
- Department of Dentistry, Endodontics Division, Health Sciences Center, UFSC - Universidade Federal de Santa Catarina, Florianópolis, SC, Brazil
| | - Kamile Leonardi Dutra
- Department of Dentistry, Endodontics Division, Health Sciences Center, UFSC - Universidade Federal de Santa Catarina, Florianópolis, SC, Brazil
| | - Tamer Ferreira Schimdt
- Department of Dentistry, Endodontics Division, Health Sciences Center, UFSC - Universidade Federal de Santa Catarina, Florianópolis, SC, Brazil
| | - Cleonice da Silveira Teixeira
- Department of Dentistry, Endodontics Division, Health Sciences Center, UFSC - Universidade Federal de Santa Catarina, Florianópolis, SC, Brazil
| | - Lucas da Fonseca Roberti Garcia
- Department of Dentistry, Endodontics Division, Health Sciences Center, UFSC - Universidade Federal de Santa Catarina, Florianópolis, SC, Brazil
| | - Eduardo Antunes Bortoluzzi
- Department of Dentistry, Endodontics Division, Health Sciences Center, UFSC - Universidade Federal de Santa Catarina, Florianópolis, SC, Brazil
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Orlowski NB, Schimdt TF, Teixeira CDS, Garcia LDFR, Savaris JM, Tay FR, Bortoluzzi EA. Smear Layer Removal Using Passive Ultrasonic Irrigation and Different Concentrations of Sodium Hypochlorite. J Endod 2020; 46:1738-1744. [PMID: 32721483 DOI: 10.1016/j.joen.2020.07.020] [Citation(s) in RCA: 22] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/09/2020] [Revised: 06/22/2020] [Accepted: 07/13/2020] [Indexed: 10/23/2022]
Abstract
INTRODUCTION The present study evaluated the effect of passive ultrasonic activation (PUI) of EDTA solution followed by conventional irrigation with 2 concentrations of sodium hypochlorite (NaOCl) on smear layer removal. METHODS Fifty single-root mandibular premolars were chemomechanically prepared with ProTaper Universal (Dentsply Maillefer, Ballaigues, Switzerland) nickel-titanium rotary instruments and 1% NaOCl. The roots were cleaved, and the dentin surfaces were analyzed with scanning electron microscopy operated at a low vacuum. Images were obtained from previously demarcated areas in each root canal third. The teeth were reassembled and distributed into 5 groups according to the final irrigation protocols (n = 10): group 1, EDTA/PUI + 1% NaOCl; group 2, EDTA/PUI + 5% NaOCl; group 3, EDTA/CI + 1% NaOCl; group 4, EDTA/CI + 5% NaOCl; and group 5 (negative control), saline solution/PUI. After irrigation, the teeth were reseparated and prepared for conventional high-vacuum scanning electron microscopy of the same dentin surface that was previously analyzed. The amount of debris was classified using a 4-point scoring system. Data were analyzed with Kruskal-Wallis and Dunn tests at α = 0.05. RESULTS Groups 1 and 2, which used PUI and different concentrations of NaOCl, were not significantly different; however, they differed significantly from group 3 (P < .05). With respect to canal cleanliness at different root thirds, all groups showed the worst cleaning at the apical third. CONCLUSIONS PUI activation of the EDTA irrigant is required when canal debridement is performed with EDTA and a lower concentration of NaOCl.
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Affiliation(s)
- Nayra Bittencourt Orlowski
- Department of Dentistry, Endodontics Division, Health Sciences Center, Federal University of Santa Catarina, Florianópolis, Santa Catarina, Brazil
| | - Tamer Ferreira Schimdt
- Department of Dentistry, Endodontics Division, Health Sciences Center, Federal University of Santa Catarina, Florianópolis, Santa Catarina, Brazil
| | - Cleonice da Silveira Teixeira
- Department of Dentistry, Endodontics Division, Health Sciences Center, Federal University of Santa Catarina, Florianópolis, Santa Catarina, Brazil
| | - Lucas da Fonseca Roberti Garcia
- Department of Dentistry, Endodontics Division, Health Sciences Center, Federal University of Santa Catarina, Florianópolis, Santa Catarina, Brazil
| | - Julia Menezes Savaris
- Department of Dentistry, Endodontics Division, Health Sciences Center, Federal University of Santa Catarina, Florianópolis, Santa Catarina, Brazil
| | - Franklin R Tay
- Department of Endodontics, The Dental College of Georgia, Augusta, Georgia
| | - Eduardo Antunes Bortoluzzi
- Department of Dentistry, Endodontics Division, Health Sciences Center, Federal University of Santa Catarina, Florianópolis, Santa Catarina, Brazil.
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Dos Santos MC, da Silveira Teixeira C, da Fonseca Roberti Garcia L, Henriques B, Tay FR, Bortoluzzi EA. Heated distilled water with or without continuous ultrasonic irrigation improves final irrigation efficacy and reduces dentine erosion. J Dent 2020; 103:103507. [PMID: 33098929 DOI: 10.1016/j.jdent.2020.103507] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/16/2020] [Revised: 10/15/2020] [Accepted: 10/16/2020] [Indexed: 11/29/2022] Open
Abstract
OBJECTIVES The present study evaluated the effects of using heated distilled water (HDW), with or without continuous ultrasonic irrigation (CUI), on smear layer removal and deterioration of root dentine microstructure. MATERIALS AND METHODS After chemomechanical preparation, 60 human teeth were longitudinally cleaved into two halves for smear layer quantification at the cervical-third, middle-third and apical root-third of the canal space. After reassembly, the root canals were irrigated with 17 % EDTA, followed by one of the six final irrigation protocols (n = 10) - G1: conventional irrigation (CI)+NaOCl at 25 °C; G2: NaOCl at 25 °C + CUI; G3: CI with DW at 25 °C; G4: DW at 25 °C + CUI; G5: CI + HDW at 65 °C; G6: HDW at 65 °C + CUI. Tooth-halves were processed and examined by scanning electron microscopy. The percentage of opened dentinal tubules in the irrigated areas of the canal space was expressed as a percentage of the total surface area. Dentine erosion was classified by numeric scores. Smear layer removal was analysed with ANOVA and Student-Newman-Keuls tests; dentine erosion was analysed with Cohran-Mantel-Haenstel statistic (α = 0.05). RESULTS The cervical-third had a higher percentage of open dentinal tubules for all groups (p < 0.05). In G2, the middle-third had a lower percentage of open tubules, which was significantly different from the other groups (p < 0.05). Groups that utilised NaOCl as the final irrigant had more extensive erosion when CUI was used. CONCLUSION Heated distilled water, with or without CUI, was as efficient as 1 % NaOCl in the final cleaning of the instrumented canal space. The use of HDW produces less extensive dentine erosion. CLINICAL SIGNIFICANCE Heated distilled water removes smear layers with less deleterious effects on dentine microstructure and may be considered a final irrigant after mechanical preparation and EDTA chelation.
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Affiliation(s)
| | | | | | - Bruno Henriques
- Department of Dentistry, Endodontics Division, Health Sciences Center, Federal University, Brazil; Ceramic and Composite Materials Research Group (CERMAT), Federal University of Santa Catarina, Florianópolis, Santa Catarina, Brazil; CMEMS-UMinho, University of Minho, Campus de Azurém, Guimarães, Portugal of Santa Catarina, Florianópolis, Santa Catarina, Brazil
| | - Franklin R Tay
- Department of Endodontics, The Dental College of Georgia, Augusta, GA, USA.
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Teixeira CDS, Wasielewsky JC, Dos Santos GS, Bernardi A, Bortoluzzi EA, Garcia LDFR. Effect of the addition of nanoparticles of CaCO 3 and different water-to-powder ratios on the physicochemical properties of white Portland cement. Microsc Res Tech 2020; 84:592-601. [PMID: 33047854 DOI: 10.1002/jemt.23617] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2020] [Revised: 09/23/2020] [Accepted: 09/29/2020] [Indexed: 11/09/2022]
Abstract
The addition of calcium carbonate nanoparticles (nano-CaCO3 ) accelerates the hydration of Portland cement improving its mechanical properties. Conversely, nano-CaCO3 addition leads to reduction in the water required during initial PC hydration. Therefore, the use of a correct water-to-powder ratio is fundamental for manipulating this hydraulic cement. This study evaluated the effect of nano-CaCO3 addition and different water-to-powder ratios on the physicochemical properties of white Portland cement (WPC). WPC was associated to different concentrations of nano-CaCO3 , and the following experimental groups were created: G1a (no nano-CaCO3 ); G2a (0.5% nano-CaCO3 ), G3a (1% nano-CaCO3 ), G4a (2% nano-CaCO3 ), and G5a (5% nano-CaCO3 ). The setting-time (ST), compressive strength (CS), dimensional change (DC), solubility (S), and pH were assessed (24 hr and 30 days). Next, WPC + 5% nano-CaCO3 was manipulated varying the water-to-powder ratio: G1b (WPC/0.33 ml); G2b (WPC/nano-CaCO3 /0.33 ml); G3b (WPC/0.29 ml); G4b (WPC/nano-CaCO3 /0.29 ml); G5b (WPC/0.26 ml); and G6b (WPC/nano-CaCO3 /0.26 ml). The tests were repeated. The data analysis (2-way ANOVA and Tukey test, α = 5%) demonstrated that ST was shorter for samples containing nano-CaCO3 (p < .05). Reduction in CS was observed for all groups at 30 days, except G5a, G2b, and G6b (p < .05). DC and S had no statistical difference among groups (p > .05) independently of nano-CaCO3 water-to-powder ratio. After 30 days, there was significant reduction in pH for G3a and G6b (p < .05). The different concentrations of nano-CaCO3 and water-to-powder ratios affected the physicochemical properties of WPC, especially the setting-time and compressive strength.
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Affiliation(s)
- Cleonice da Silveira Teixeira
- Department of Dentistry, Endodontics Division, Health Sciences Center, Federal University of Santa Catarina, Florianópolis, Santa Catarina, Brazil
| | - Jessica Coelho Wasielewsky
- Department of Dentistry, Endodontics Division, Health Sciences Center, Federal University of Santa Catarina, Florianópolis, Santa Catarina, Brazil
| | - Giovanna Slongo Dos Santos
- Department of Dentistry, Endodontics Division, Health Sciences Center, Federal University of Santa Catarina, Florianópolis, Santa Catarina, Brazil
| | - Anarela Bernardi
- Department of Dentistry, Endodontics Division, Health Sciences Center, Federal University of Santa Catarina, Florianópolis, Santa Catarina, Brazil
| | - Eduardo Antunes Bortoluzzi
- Department of Dentistry, Endodontics Division, Health Sciences Center, Federal University of Santa Catarina, Florianópolis, Santa Catarina, Brazil
| | - Lucas da Fonseca Roberti Garcia
- Department of Dentistry, Endodontics Division, Health Sciences Center, Federal University of Santa Catarina, Florianópolis, Santa Catarina, Brazil
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40
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Gasperi TL, Silveira JDACD, Schmidt TF, Teixeira CDS, Garcia LDFR, Bortoluzzi EA. Physical-Mechanical Properties of a Resin-Modified Calcium Silicate Material for Pulp Capping. Braz Dent J 2020; 31:252-256. [PMID: 32667514 DOI: 10.1590/0103-6440202003079] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2019] [Accepted: 01/23/2020] [Indexed: 03/21/2023] Open
Abstract
The purpose of this study was to investigate and to compare the physical-mechanical properties of a resin-modified calcium silicate material (TheraCal LC), used for pulp-capping, to MTA (Angelus) and a calcium hydroxide cement (Dycal). Specimens of each material (n=12) were prepared in Teflon molds (3.58 mm x 3 mm) and measured before and after immersion in distilled water for 24 h and 30 days to evaluate the dimensional change. The same specimens were submitted to compressive strength test on a Universal Testing Machine (Instron) (1 mm/min). Root canals were filled with the cements (n=8), and after 24 h, the bond strength (push-out test) to dentin was also assessed on a Universal Testing Machine (1 mm/min). Eight additional specimens of TheraCal LC were prepared to evaluate the bond strength immediately after light curing. Data were analyzed using One-Way ANOVA, and Tukey or Bonferroni post hoc tests (p<0.05). Percentage expansion of TheraCal LC was above the Specification No. 57 of ANSI/ADA, in both periods. The dimensional change for TheraCal LC was higher than MTA in 24 h and 30 days; and Dycal in 30 days (p<0.05). TheraCal LC had higher compressive and bond strength to dentin in comparison with MTA and Dycal (p<0.05). Although TheraCal LC expanded more than the ANSI/ADA recommendation, its compressive and push-out bond strength to dentin were satisfactory and superior to MTA and Dycal.
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Affiliation(s)
- Taynnara Licéski Gasperi
- Department of Dentistry, Endodontics Division, Health Sciences Center, Universidade Federal de Santa Catarina, Florianópolis, SC, Brazil
| | | | - Tamer Ferreira Schmidt
- Department of Dentistry, Endodontics Division, Health Sciences Center, Universidade Federal de Santa Catarina, Florianópolis, SC, Brazil
| | - Cleonice da Silveira Teixeira
- Department of Dentistry, Endodontics Division, Health Sciences Center, Universidade Federal de Santa Catarina, Florianópolis, SC, Brazil
| | - Lucas da Fonseca Roberti Garcia
- Department of Dentistry, Endodontics Division, Health Sciences Center, Universidade Federal de Santa Catarina, Florianópolis, SC, Brazil
| | - Eduardo Antunes Bortoluzzi
- Department of Dentistry, Endodontics Division, Health Sciences Center, Universidade Federal de Santa Catarina, Florianópolis, SC, Brazil
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41
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Tedesco M, Chain MC, Felippe WT, Alves AMH, Garcia LDFR, Bortoluzzi EA, Cordeiro MR, Teixeira CS. Correlation between Bond Strength to Dentin and Sealers Penetration by Push-Out Test and CLSM Analysis. Braz Dent J 2019; 30:555-562. [PMID: 31800749 DOI: 10.1590/0103-6440201902766] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/29/2019] [Accepted: 05/19/2019] [Indexed: 11/21/2022] Open
Abstract
This study correlated the bond strength (BS) and dentin penetration of different sealers by push-out test and Confocal Laser Scanning Microscopy (CLSM) analysis. Forty-five root canals were prepared according to the crown-down technique and filled with gutta-percha associated to the following sealers (n=15): Endofill, AH Plus and MTA Fillapex. Five canals of each group were filled with the sealers added with 0.1% Rhodamine B dye. Next, the specimens were transversely sectioned and submitted to the push-out test (n=10) and CLSM analysis (n=5). The BS data showed the following means (MPa) and standard deviation: AH Plus (4.17±1.86); MTA Fillapex (3.13±1.96) and Endofill (2.10±1.03). Statistical analysis (two-way ANOVA, α=0.05) showed significant difference among sealers (p<0.001) and root canal thirds (p<0.001). The BS results of Endofill and MTA Fillapex were statistically similar (p>0.05), however, they were statistically different from AH Plus (p<0.001). The regional analysis of BS showed similarity between middle and apical thirds (p>0.05), and both were different from coronal portion (p<0.001). CLSM analysis verified tags formation in all groups and higher penetration of the specimens filled with AH Plus (p<0.05). The Kendall test (correlation between BS to dentin and sealer penetration into dentinal tubules) and the Pearson test (between failures pattern and sealer penetration into dentinal tubules) did not show correlation between the variables evaluated for all the tested sealers (p>0.05). AH Plus group had higher BS to dentin, and deeper tags formation than the other sealers. There was no significant correlation between BS and intratubular penetration of the tested sealers.
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Affiliation(s)
- Maybell Tedesco
- Department of Dentistry, Endodontics Division, Health Sciences Center, UFSC - Universidade Federal de Santa Catarina, Florianópolis, SC, Brazil
| | - Marcelo Carvalho Chain
- Department of Dentistry, Endodontics Division, Health Sciences Center, UFSC - Universidade Federal de Santa Catarina, Florianópolis, SC, Brazil
| | - Wilson Tadeu Felippe
- Department of Dentistry, Endodontics Division, Health Sciences Center, UFSC - Universidade Federal de Santa Catarina, Florianópolis, SC, Brazil
| | - Ana Maria Hecke Alves
- Department of Dentistry, Endodontics Division, Health Sciences Center, UFSC - Universidade Federal de Santa Catarina, Florianópolis, SC, Brazil
| | - Lucas da Fonseca Roberti Garcia
- Department of Dentistry, Endodontics Division, Health Sciences Center, UFSC - Universidade Federal de Santa Catarina, Florianópolis, SC, Brazil
| | - Eduardo Antunes Bortoluzzi
- Department of Dentistry, Endodontics Division, Health Sciences Center, UFSC - Universidade Federal de Santa Catarina, Florianópolis, SC, Brazil
| | - Mabel Rodriguez Cordeiro
- Department of Morphological Sciences, UFSC - Universidade Federal de Santa Catarina, Florianópolis, SC, Brazil
| | - Cleonice Silveira Teixeira
- Department of Dentistry, Endodontics Division, Health Sciences Center, UFSC - Universidade Federal de Santa Catarina, Florianópolis, SC, Brazil
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Nery-Silva IS, Rover G, Tedesco M, Garcia LDFR, Bortoluzzi EA, Alves AMH, Teixeira CS. Effect of Bleaching and Ca(OH)2 Dressing on the Bond Strength of Fiberglass Posts to Root Dentine. Eur J Dent 2019; 13:335-342. [PMID: 31618786 PMCID: PMC6890482 DOI: 10.1055/s-0039-1697557] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
Abstract
Objective
The purpose of this study was to evaluate the effect of the intracoronary bleaching and calcium hydroxide (Ca(OH)
2
) dressing use, on the bond strength (BS) of fiberglass posts to root dentine.
Materials and Methods
After root canal filling of 40 bovine incisors, a 2-mm thick cervical plug was fabricated 2 mm below the cementum–enamel junction. Seven days later, teeth were randomly distributed into four groups (
n
= 10), as follows: G1 no bleaching, followed by immediate post cementation; G2 bleaching and immediate post cementation; G3 bleaching, dressing with Ca(OH)
2
for 7 days, and post cementation; and G4 bleaching, no dressing, and post cementation after 7 days. The roots were transversally cut into 1-mm thick slices to perform the push-out test (0.5 mm/min). Failure modes were assessed under scanning electron microscopy.
Statistical Analysis
The analysis of variance (two-way ANOVA) was performed, followed by the supplementary Tukey multiple comparison test (
a
= 5%).
Results
No significant difference for BS was observed among groups. Considering the different root thirds, G1 had higher BS values for the cervical third in comparison with the apical one (
p
< 0.05). The most frequent failure modes were adhesive between cement/dentine (G1); cohesive at the post (G2 and G3), and mixed (G4).
Conclusions
The BS of the fiberglass posts to root dentine was not affected by the intracoronary bleaching and the use of Ca(OH)
2
dressing.
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Affiliation(s)
- Iane Souza Nery-Silva
- Endodontics Division, Department of Dentistry, Health Sciences Center, Federal University of Santa Catarina, Florianópolis, SC, Brazil
| | - Gabriela Rover
- Endodontics Division, Department of Dentistry, Health Sciences Center, Federal University of Santa Catarina, Florianópolis, SC, Brazil
| | - Maybell Tedesco
- Endodontics Division, Department of Dentistry, Health Sciences Center, Federal University of Santa Catarina, Florianópolis, SC, Brazil
| | - Lucas da Fonseca Roberti Garcia
- Endodontics Division, Department of Dentistry, Health Sciences Center, Federal University of Santa Catarina, Florianópolis, SC, Brazil
| | - Eduardo Antunes Bortoluzzi
- Endodontics Division, Department of Dentistry, Health Sciences Center, Federal University of Santa Catarina, Florianópolis, SC, Brazil
| | - Ana Maria Hecke Alves
- Endodontics Division, Department of Dentistry, Health Sciences Center, Federal University of Santa Catarina, Florianópolis, SC, Brazil
| | - Cleonice Silveira Teixeira
- Endodontics Division, Department of Dentistry, Health Sciences Center, Federal University of Santa Catarina, Florianópolis, SC, Brazil
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Aguilar FG, Roberti Garcia LDF, Cruvinel DR, Silva Sousa AB, Pires-de-Souza FDCP. Color and opacity of composites protected with surface sealants and submitted to artificial accelerated aging. Eur J Dent 2019. [DOI: 10.1055/s-0039-1698927] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022] Open
Abstract
ABSTRACTObjectives: To evaluate the color similarity, stability and opacity of composites (TPH, Charisma, and Concept, shade A2) protected with surface sealants (Fortify Plus and Biscover) and cyanoacrylate (Super Bonder).Methods: Forty specimens of each composite were made and separated into 4 groups (n=10) according to the surface protection: GI - without sealant; GII - cyanoacrylate; GIII - Fortify Plus; GIV - Biscover. Color and opacity readings were taken before and after Artificial Acelerated Aging (AAA) and the values obtained for color stability were submitted to statistical analysis by 2-way ANOVA and Bonferroni’s test (P<.05). The values acquired for color similarity were submitted to 1-way ANOVA and Tukey’s test (P<.05). The specimen sufaces were compared before and after AAA using Scanning Electronic Microscopy (SEM).Results: Studied composites did not present the same values for the coordinates L*, a* and b * before AAA, indicating that there was no color similarity among them. All composites presented color alteration after AAA with clinically unacceptable values. Protected groups presented lower opacity variation after AAA, in comparison with the control goup. SEM evaluation demonstrated that AAA increased the surface irregularities in all of the studied groups.Conclusion: Surface sealants were not effective in maintaining composite color, but were able to maintain opacity. (Eur J Dent 2012;6:24-33)
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Affiliation(s)
- Fabiano Gamero Aguilar
- Department of Dental Materials and Prosthodontics, Dental School of Ribeirão Preto, University of São Paulo
| | | | - Diogo Rodrigues Cruvinel
- Department of Dental Materials and Prosthodontics, Dental School of Ribeirão Preto, University of São Paulo
| | - Ana Beatriz Silva Sousa
- Department of Dental Materials and Prosthodontics, Dental School of Ribeirão Preto, University of São Paulo
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Cruvinel DR, Garcia LDFR, Consani S, Pires-de-Souza FDCP. Composites Associated with Pulp-Protection Material: Color-Stability Analysis after Accelerated Artificial Aging. Eur J Dent 2019. [DOI: 10.1055/s-0039-1697801] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022] Open
Abstract
ABSTRACTObjectives: This study assessed the color stability of two composites associated with two pulp protectors submitted to accelerated artificial aging (AAA).Methods: 60 test specimens were made with 0.5 mm of protection material (calcium hydroxide - CH or glass ionomer cement - GIC) and 2.5 mm of restoration material (Concept or QuixFil) and divided into 3 groups (n=10) according to the type of protection material/composite, and the control group (no protection). After polishing, color readings were obtained with a spectrophotometer (PCB 6807 Byk Gardner) before and after AAA for 384 hours, and L*, a*, and b* coordinates and total color variation (ΔE) were analyzed (2-way ANOVA, Bonferroni, α=05).Results: Composites placed on CH presented lower L* levels than those on GIC, which presented higher L* values than the control group and lower b* values than those of the CH group. The Concept composite presented higher ΔE levels for all groups, differing statistically from QuixFil, except when placed on GIC.Conclusions: It was concluded that the protection material could affect the color stability and AAA is a factor that enhances this effect, depending on the type of composite used. (Eur J Dent 2010;4:6-11)
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Affiliation(s)
| | | | - Simonides Consani
- Piracicaba School of Dentistry, State University of Campinas, Piracicaba, SP, Brazil
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Machado R, Comparin D, Back EDEE, Garcia LDFR, Alberton LR. Residual smear layer after root canal instrumentation by using Niti, M-Wire and CM-Wire instruments: A scanning electron microscopy analysis. Eur J Dent 2019; 12:403-409. [PMID: 30147407 PMCID: PMC6089052 DOI: 10.4103/ejd.ejd_259_17] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/02/2022] Open
Abstract
Objective: The purpose of this study was to compare the amount of residual smear layer after root canal instrumentation by using Ni-Ti, M-Wire, and CM-Wire instruments. Materials and Methods: Seventy-two mandibular incisors were randomly divided into six groups according to the system used: WaveOne (WO), Reciproc (RP), Unicone (UC), ProTaper Next (PN), Mtwo (MT), and HyFlex (HF). Afterward, the specimens were cleaved in the mesiodistal and buccolingual direction for analysis by scanning electron microscopy. Results: Considering both directions and root canal thirds, there was no difference between HF, MT, and PN. RP, UC, and WO presented a significant difference between the directions, and the cervical third showed a significantly smaller quantity of residual smear layer compared with the apical third. When the systems were compared among them, there was a significant difference only between RP and WO. Conclusions: Residual smear layer observed after instrumentation with the different systems was similar, except for quantities between the reciprocating systems.
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Affiliation(s)
- Ricardo Machado
- Clinical Practice Limited to Endodontics, Navegantes, Santa Catarina, Brazil
| | - Daniel Comparin
- Clinical Practice Limited to Endodontics, Cunha Porã, Santa Catarina, Brazil
| | | | - Lucas da Fonseca Roberti Garcia
- Department of Dentistry, Division of Endodontics, Health Sciences Center, Federal University of Santa Catarina, Florianópolis, Santa Catarina, Brazil
| | - Luiz Rômulo Alberton
- Department of Veterinary Medicine, Graduate Program in Animal Science, Paranaense University - UNIPAR, Umuarama, Paraná, Brazil
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Bortoluzzi EA, Cassel de Araújo T, Carolina Corrêa Néis A, Cássia Dos Santos M, da Fonseca Roberti Garcia L, Dulcinéia Mendes Souza B, da Silveira Teixeira C. Effect of different water-to-powder ratios on the dimensional stability and compressive strength of mineral aggregate-based cements. Eur Oral Res 2019; 53:94-98. [PMID: 31309200 PMCID: PMC6614688 DOI: 10.26650/eor.20190050] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/19/2018] [Revised: 01/17/2019] [Accepted: 02/13/2019] [Indexed: 11/20/2022] Open
Abstract
Purpose: The aim of this study was to evaluate the effect of different water-to-powder ratios
on the dimensional stability and compressive strength of Portland cement and
Mineral Trioxide Aggregate (MTA). Materials and methods: Five different volumes of distilled water (0.26; 0.28; 0.30; 0.33 and 0.35 mL) were used
for every 1 g of the cements. Twelve samples (12 mm long x 6 mm in diameter) were
prepared in Teflon molds. After measuring the initial length, the specimens were
stored in distilled water for 24 hours or 30 days. At the end of these time intervals,
the specimens were measured again, and the dimensional change was calculated.
The same samples used in the previous test were submitted to compression in a
universal test machine (1 mm/min-1). Results: Analysis of the dimensional stability results showed no statistical difference
between the cements, proportions and time intervals tested, or between their
interactions. After 24 hours, MTA was more resistant than Portland cement (p<0.05).
At 30 day-period, both cements had similar, and significantly higher resistance than
they did at 24 hours (p<0.05). Conclusion: The powder/water ratio had no influence on the dimensional stability of cements.
Compressive strength of Portland cement was affected at the proportions of 0.30 and 0.35 mL/g.
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Affiliation(s)
- Eduardo Antunes Bortoluzzi
- Department of Dentistry - Endodontics Division, Health Sciences Center, Federal University of Santa Catarina,Florianópolis, SCBrazil
| | - Tchéli Cassel de Araújo
- Department of Dentistry - Endodontics Division, Health Sciences Center, Federal University of Santa Catarina,Florianópolis, SCBrazil
| | - Ana Carolina Corrêa Néis
- Department of Dentistry - Endodontics Division, Health Sciences Center, Federal University of Santa Catarina,Florianópolis, SCBrazil
| | - Michelli Cássia Dos Santos
- Department of Dentistry - Endodontics Division, Health Sciences Center, Federal University of Santa Catarina,Florianópolis, SCBrazil
| | - Lucas da Fonseca Roberti Garcia
- Department of Dentistry - Endodontics Division, Health Sciences Center, Federal University of Santa Catarina,Florianópolis, SCBrazil
| | - Beatriz Dulcinéia Mendes Souza
- Department of Dentistry - Endodontics Division, Health Sciences Center, Federal University of Santa Catarina,Florianópolis, SCBrazil
| | - Cleonice da Silveira Teixeira
- Department of Dentistry - Endodontics Division, Health Sciences Center, Federal University of Santa Catarina,Florianópolis, SCBrazil
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Vitali FC, Nomura LH, Delai D, Henriques DHN, Alves AMH, da Fonseca Roberti Garcia L, Bortoluzzi EA, Teixeira CS. Disinfection and surface changes of gutta-percha cones after immersion in sodium hypochlorite solution containing surfactant. Microsc Res Tech 2019; 82:1290-1296. [PMID: 30993775 DOI: 10.1002/jemt.23279] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/07/2018] [Revised: 03/12/2019] [Accepted: 04/02/2019] [Indexed: 11/08/2022]
Abstract
In this study, we evaluated the effectiveness of 1 and 5.25% NaOCl solutions, with or without surfactant, in disinfecting gutta-percha cones. Surface changes of the gutta-percha cones after disinfection were also assessed under scanning electron microscopy (SEM). One-hundred and eight gutta-percha cones previously contaminated with Enterococcus faecalis were left in contact for 30 s or 1 min with the following solutions (n = 12): 1% NaOCl; 1% NaOCl + 2% cetrimide; 5.25% NaOCl; 5.25% NaOCl + 2% cetrimide. Positive control group was composed by the remaining contaminated cones (n = 12), and the negative control group by noncontaminated cones (n = 12). The cones were kept in Eppendorf tubes containing Trypticase Soy Broth at 37°C for 24 hr, and then, the presence of turbidity was analyzed. Ten additional cones (n = 2) were observed under SEM to evaluate surface changes after 1 min of disinfection. The data analysis (Kruskal-Wallis test, α = 5%) demonstrated that regardless the presence of surfactant, the NaOCl solutions used were effective in the disinfection when cones were immersed for 1 min. However, at the 30-s period, only the 5.25% NaOCl solution was effective. SEM analysis demonstrated that NaOCl solutions promoted the formation of sodium chloride crystals on cones surface, less visible when the 1% NaOCl associated to surfactant was used. The addition of surfactant did not affect the disinfection capacity of NaOCl solutions. However, the surfactant has apparently inhibited the sodium chloride crystals deposition on the cones surface when associated to 1% NaOCl solution.
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Affiliation(s)
- Filipe C Vitali
- Department of Dentistry/Endodontics, Federal University of Santa Catarina-UFSC, Florianópolis, Santa Catarina, Brazil
| | - Lincon H Nomura
- Department of Dentistry/Endodontics, Federal University of Santa Catarina-UFSC, Florianópolis, Santa Catarina, Brazil
| | - Débora Delai
- Department of Dentistry/Endodontics, Federal University of Santa Catarina-UFSC, Florianópolis, Santa Catarina, Brazil
| | - Dilma H N Henriques
- Department of Dentistry/Endodontics, Federal University of Santa Catarina-UFSC, Florianópolis, Santa Catarina, Brazil
| | - Ana M H Alves
- Department of Dentistry/Endodontics, Federal University of Santa Catarina-UFSC, Florianópolis, Santa Catarina, Brazil
| | | | - Eduardo A Bortoluzzi
- Department of Dentistry/Endodontics, Federal University of Santa Catarina-UFSC, Florianópolis, Santa Catarina, Brazil
| | - Cleonice S Teixeira
- Department of Dentistry/Endodontics, Federal University of Santa Catarina-UFSC, Florianópolis, Santa Catarina, Brazil
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48
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Moraes PCD, Marques ICDS, Basso FG, Rossetto HL, Pires-de-Souza FDCP, Costa CADS, Garcia LDFR. Repair of Bone Defects with Chitosan-Collagen Biomembrane and Scaffold Containing Calcium Aluminate Cement. Braz Dent J 2018; 28:287-295. [PMID: 29297548 DOI: 10.1590/0103-6440201601454] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/12/2016] [Accepted: 04/03/2017] [Indexed: 12/21/2022] Open
Abstract
Innovative biomaterials can provide a promising new direction for the treatment of bone defects, stimulating a proper repair process, with no damage to adjacent tissues. The purpose of this in vivo study was to evaluate the biocompatibility and the osteoinductive capacity of chitosan-collagen biomembrane and scaffold containing calcium aluminate cement. Eighteen New Zealand white rabbits (Oryctolagus cuniculus) were distributed according to the experimental times of analysis (7, 15 and 30 days). Four bone defects were created in the rabbits calvaria, which were individually filled with the biomembrane, scaffold, blood clot (negative control) and autologous bone (positive control). Histopathological analysis was performed using optical microscope at 32´, 64´, 125´ and 320´ magnifications. Cell response to inflammation and new bone tissue formation was quantified using a score system. The biomembrane group presented greater inflammatory response at 15 days, with significant difference to autologous bone group (p<0.05). There was no statistically significant difference for foreign body type reaction among groups (p>0.05). Concerning new bone formation, linear closure of the defect area was observed more evidently in the group with autologous bone. The scaffold group presented similar results compared with the autologous bone group at 30 days (p>0.05). Both tested biomaterials presented similar biocompatibility compared with the control groups. In addition, the biomembrane and scaffold presented similar osteoinductive capacity, stimulating bone repair process in the course of the experimental time intervals.
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Affiliation(s)
- Paola Castro de Moraes
- Department of Clinics and Surgery, Jaboticabal School of Agricultural and Veterinary Sciences, UNESP - Universidade Estadual Paulista, Jaboticabal, SP, Brazil
| | | | - Fernanda Gonçalves Basso
- Department of Physiology and Pathology, Araraquara Dental School, UNESP - Universidade Estadual Paulista, Araraquara, SP, Brazil
| | | | | | - Carlos Alberto de Souza Costa
- Department of Physiology and Pathology, Araraquara Dental School, UNESP - Universidade Estadual Paulista, Araraquara, SP, Brazil
| | - Lucas da Fonseca Roberti Garcia
- Department of Dentistry - Endodontics Division, Health Sciences Center, UFSC - Universidade Federal de Santa Catarina, Florianópolis, SC, Brazil
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Machado R, Cunha MMD, Comparin D, Cosme-Silva L, Back EDEE, Garcia LDFR. Incidence of periodontal compromise in teeth indicated for undergoing endodontic treatment: A clinical study. Eur J Dent 2018; 12:334-337. [PMID: 30147395 PMCID: PMC6089048 DOI: 10.4103/ejd.ejd_271_17] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022] Open
Abstract
Objective The aim of this study was to evaluate the periodontal status of teeth indicated for undergoing endodontic treatment. Materials and Methods Two hundred and nine teeth were evaluated using probing depth tests at three vestibular and three palatine/lingual sites before the patients underwent treatment. Teeth that presented up to 3-mm probing depth were considered as healthy. Those that presented at least one site with probing depth >3 mm were considered periodontally compromised. The data were statistically analyzed by means of applying the Chi-square test, with a level of significance of 5%. Results Of the total of 209 teeth evaluated, 40 (19.10%) presented periodontal compromise. There was statistically significant difference related to the compromised teeth of patients of the female gender (22.80%) compared with teeth of patients of the male gender (12.30%) (P < 0.05). Conclusions Fewer than 20% of the teeth evaluated presented a periodontal compromise. Patients of the female gender presented a higher number of periodontally compromised teeth than patients of the male gender.
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Affiliation(s)
- Ricardo Machado
- Clinical Practice Limited to Endodontics, Navegantes, Santa Catarina, Brazil
| | | | - Daniel Comparin
- Clinical Practice Limited to Endodontics, Cunha Porã, Santa Catarina, Brazil
| | - Leopoldo Cosme-Silva
- Department of Endodontics, State University of São Paulo, Araçatuba, São Paulo, Brazil
| | | | - Lucas da Fonseca Roberti Garcia
- Department of Dentistry, Division of Endodontics, Health Sciences Center, Federal University of Santa Catarina, Florianópolis, Santa Catarina, Brazil
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Bastos MMB, Hanan ARA, Bastos AMB, Marques AAF, Garcia LDFR, Sponchiado EC. Topographic and Chemical Analysis of Reciprocating and Rotary Instruments Surface after Continuous Use. Braz Dent J 2018; 28:461-466. [PMID: 29160398 DOI: 10.1590/0103-6440201701528] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/08/2017] [Accepted: 04/26/2017] [Indexed: 11/21/2022] Open
Abstract
This study aimed at evaluating the changes in surface characteristics and NiTi content of reciprocating and rotary instruments after continuous use. Thirty brand-new instruments were assigned to 3 groups (n=10): PNX1 Group - ProTaper Next system - instrument X1; PNX2 Group - ProTaper Next system - instrument X2 and WO Group - WaveOne system - Primary instrument 25.08. The instruments were used to prepare 60 simulated root canals. Analysis of surface characteristics by scanning electron microscopy (SEM) and chemical analysis of Ni and Ti content by energy-dispersive spectroscopy (EDS) were performed before and after the first and third use of the instruments. Only WO Group had significant increase in the quantity of defects and deformations after the third use (p<0.05). PNX1 Group had significant decrease in Ni content after the third use, in comparison with the unused instruments (p<0.05). PNX1 Group had no decrease in Ti content throughout the time of use (p>0.05), however, in PNX2 Group, there was significant decrease in the different time interval of analysis (p<0.05). Continuous use promoted increase in defects and deformations only for WaveOne instruments. Chemical composition presented significant changes according to the time of instruments use.
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Affiliation(s)
| | | | | | | | - Lucas da Fonseca Roberti Garcia
- Department of Dentistry, Endodontics Division, Health Sciences Center, UFSC - Universidade Federal de Santa Catarina, Florianópolis, SC, Brazil
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