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Merlin AR, Ravindran V, Jeevanandan G, Maganur PC, Panda S, Syed AA, Kalagi S, AlShehri A, Khanagar S, Vishwanathaiah S. Comparative Evaluation of Push-out Bond Strength of Conventional Mineral Trioxide Aggregate, Biodentine, and Two Novel Antibacterial-enhanced Mineral Trioxide Aggregates. J Contemp Dent Pract 2024; 25:168-173. [PMID: 38514415 DOI: 10.5005/jp-journals-10024-3638] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/23/2024]
Abstract
AIM To evaluate the push-out bond strength of two newly modified mineral trioxide aggregates (MTAs) with conventional MTA and biodentine. MATERIALS AND METHODS Material preparation: Two commercially available bioactive bioceramics: Group I: Mineral trioxide aggregate; Group II: Biodentine; and two newly formulated modified MTAs: Group III: Doxycycline incorporated MTA formulation; Group IV: Metronidazole incorporated MTA formulation was used in the present study. All the test materials were then carried using a plastic instrument to the desired experimental design. Teeth sample preparation: A total of 120 teeth samples were collected and divided into four groups of test materials with 30 teeth samples per group. Single-rooted permanent teeth, that is, incisors were collected and stored in saline until the study was performed. Sectioning of the teeth into 2.0 ± 0.05-mm thick slices was performed perpendicular to the long axis of the tooth. The canal space was instrumented using Gates Glidden burs to achieve a diameter of 1.5 mm. All four prepared materials were mixed and placed in the lumen of the slices and placed in an incubator at 37°C for 72 hours. Push-out test and bond failure pattern evaluation: The push-out test was performed using a universal testing machine. The slices were examined under a scanning electron microscope (SEM) at 40× magnification to determine the nature of bond failure. All the collected data were recorded and statistically analyzed. RESULTS The mean push-out bond strength was found to be the highest for group II (37.38 ± 1.94 MPa) followed by group III (28.04 ± 2.22 MPa) and group IV (27.83 ± 1.34 MPa). The lowest mean push-out bond strength was noticed with group I (22.89 ± 2.49 MPa). This difference was found to be statistically significant (p = 0.000). Group I samples had the predominantly adhesive type of failure (86.4%), while group II samples showed the cohesive type of failure (94.2%). Both the modified MTAs (groups III and IV) primarily showed mixed types of failures. CONCLUSION Both the antibacterial-enhanced MTAs had better pushout bond strength compared to conventional MTA but did not outperform biodentine. Hence, it could serve as a substitute for conventional MTA due to its augmented physical properties. CLINICAL SIGNIFICANCE Carious pulp exposure and nonvital open apices pose a critical challenge to pediatric dental practitioners. In such circumstances, maintaining the vitality of pulp and faster healing would help in a better prognosis. Novel MTAs without any cytotoxic components, and enhanced antibacterial contents with augmented physical properties can help in treating such clinical conditions. How to cite this article: Merlin ARS, Ravindran V, Jeevanandan G, et al. Comparative Evaluation of Push-out Bond Strength of Conventional Mineral Trioxide Aggregate, Biodentine, and Two Novel Antibacterial-enhanced Mineral Trioxide Aggregates. J Contemp Dent Pract 2024;25(2):168-173.
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Affiliation(s)
- Arokia Rs Merlin
- Department of Pediatric and Preventive Dentistry, Saveetha Dental College and Hospitals, Saveetha Institute of Medical and Technical Sciences, Saveetha University, Chennai, Tamil Nadu, India
| | - Vignesh Ravindran
- Department of Pediatric and Preventive Dentistry, Saveetha Dental College and Hospitals, Saveetha Institute of Medical and Technical Sciences, Saveetha University, Chennai, Tamil Nadu, India, Phone: +91 9789934476, e-mail:
| | - Ganesh Jeevanandan
- Department of Pediatric and Preventive Dentistry, Saveetha Dental College and Hospitals, Saveetha Institute of Medical and Technical Sciences, Saveetha University, Chennai, Tamil Nadu, India, Orcid: https://orcid.org/0000-0003-3631-6982
| | - Prabhadevi C Maganur
- Department of Preventive Dental Sciences and Department of Pediatric Dentistry, College of Dentistry, Jazan University, Jazan, Saudi Arabia
| | - Suman Panda
- Department of Preventive Dental Sciences and Department of Pediatric Dentistry, College of Dentistry, Jazan University, Jazan, Saudi Arabia
| | - Ather A Syed
- Department of Preventive Dental Sciences and Department of Pediatric Dentistry, College of Dentistry, Jazan University, Jazan, Saudi Arabia
| | - Sara Kalagi
- Department of Restorative and Prosthetic Dental Sciences, College of Dentistry, King Saud bin Abdulaziz University for Health Sciences; King Abdullah International Medical Research Center, National Guard Health Affairs, Riyadh, Saudi Arabia
| | - Aram AlShehri
- Department of Restorative and Prosthetic Dental Sciences, College of Dentistry, King Saud bin Abdulaziz University for Health Sciences; King Abdullah International Medical Research Center, National Guard Health Affairs, Riyadh, Saudi Arabia
| | - Sanjeev Khanagar
- Department of Preventive Dental Sciences and Department of Pediatric Dentistry, College of Dentistry, Jazan University, Jazan; King Abdullah International Medical Research Center, National Guard Health Affairs, Riyadh, Saudi Arabia
| | - Satish Vishwanathaiah
- Department of Preventive Dental Sciences and Department of Pediatric Dentistry, College of Dentistry, Jazan University, Jazan, Saudi Arabia
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Moinuddin MK, Ramachandruni N, Tehreem A, Kasam S, Anbalagan S, Anupama N. Sealing Ability Comparison of Three Different Obturating Systems to Intraradicular Dentin-An In Vitro Stereomicroscopic Study. JOURNAL OF PHARMACY AND BIOALLIED SCIENCES 2024; 16:S733-S735. [PMID: 38595555 PMCID: PMC11000994 DOI: 10.4103/jpbs.jpbs_978_23] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/02/2023] [Revised: 10/05/2023] [Accepted: 10/06/2023] [Indexed: 04/11/2024] Open
Abstract
Background Different obturation techniques are being used to improve canal sealing, thereby minimizing marginal leakage. Aims and Objectives To evaluate the marginal leakage of three different obturating materials and techniques using stereomicroscope. Materials and Methods Thirty freshly extracted maxillary anterior teeth were collected and were divided into three groups of 10 each for which the biomechanical preparation was done. The teeth were divided into three experimental groups according to the obturation material and technique used, Group I: gutta-percha with AH Plus root canal sealer (lateral condensation): Group II: thermoplasticized gutta-percha technique-non-carrier-based (calamus) with AH Plus sealer (backfill): Group III: C point (self-sealing root canal obturating system) with bioceramic sealer (single cone). Each specimen was subjected for testing apical sealing ability. The values of microleakage associated with different root canal sealers were evaluated using a stereomicroscope. Results There was no statistically significant difference in the mean scores of apical dye penetration/leakage among all the three groups (P = 0.091), whereas Group I showed a higher degree of apical leakage than the other techniques tested. Conclusion None of the tested filling materials provided a gap-free or void-free root canal filling; however, thermoplasticized gutta-percha is used with AH Plus sealer exhibited less voids and gaps when compared to other tested materials.
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Affiliation(s)
- Mohammed Khwaja Moinuddin
- Department of Conservative Dentistry and Endodontics, Nizam’s Institute of Medical Sciences, Hyderabad, Telangana, India
| | - Nimeshika Ramachandruni
- Department of Conservative Dentistry and Endodontics, Mallareddy Dental College for Women, Hyderabad, Telangana, India
| | - Ayesha Tehreem
- Department of Conservative Dentistry and Endodontics, HKE’s Sri Nijalingappa Institute of Dental Sciences and Research, Gulbarga, Karnataka, India
| | - Swetha Kasam
- Department of Conservative Dentistry and Endodontics, Malla Reddy Dental College for Women, Hyderabad, Telangana, India
| | | | - N Anupama
- Department of Prosthodontics and Crown & Bridge, Sree Mookambika Institute of Dental Sciences, Kulasekharam, Kanyakumari, Tamil Nadu, India
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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] [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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Medhat A, Ghoneim A, Nabil Roshdy N. The Effect of Final Irrigation Protocols on the Apical Sealing Ability of Epoxy Resin-based and Bioceramic-based Root Canal Sealers. Open Access Maced J Med Sci 2022. [DOI: 10.3889/oamjms.2022.10864] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023] Open
Abstract
Aim: This study was designed to investigate the effect of different final irrigation protocols on the apical sealing ability of bioceramic and epoxy resin-based sealers.
Materials and methods: Thirty human single-rooted mandibular premolars were instrumented using ProTaper Next rotary files. Teeth were randomly divided into three groups according to the final irrigation regimen; Group I: 5 ml 0.2% CNPs/3 min, Group II: 2.5 ml 0.2% CNPs/1.5 min followed by 2.5 ml 17% EDTA/1.5 min, and Group III: 5 ml 17% EDTA/3min. All groups were subdivided into two subgroups based on the obturation material; Subgroup A: gutta-percha/Sure-Seal Root BC Sealer and Subgroup B: gutta-percha/AH Plus. All canals were obturated using single cone obturation technique. The apical sealing ability was assessed using modified silver staining technique with ammoniacal silver nitrate tracer solution. Samples were sectioned longitudinally and examined using scanning electron microscope.
Results: Sure-Seal Root BC sealer showed significantly lower nanoleakage compared to AH Plus (p < 0.001). No significant difference was recorded in the nanoleakage of Sure-Seal Root BC sealer among the three groups (p = 0.284), while AH Plus showed a significantly higher nanoleakage in the EDTA group (p = 0.002). The depth of silver nitrate penetration into the dentinal tubules was significantly higher in AH Plus subgroup with the three different irrigation protocols (p < 0.001). For both sealers, the highest penetration depth for silver nitrate tracer solution was recorded in the EDTA group (p < 0.001).
Conclusions: The apical sealing ability of bioceramic sealers is better than that of epoxy resin-based sealers. The type of the final irrigating solution seems to affect the post-obturation seal of both AH Plus and Sure-Seal Root BC sealer.
Keywords: Bioceramic, AH Plus, Chitosan nanoparticles, EDTA, Sealing ability.
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Influence of irrigation and laser assisted root canal disinfection protocols on dislocation resistance of a bioceramic sealer. Photodiagnosis Photodyn Ther 2022; 40:103067. [PMID: 35973550 DOI: 10.1016/j.pdpdt.2022.103067] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/12/2022] [Revised: 07/13/2022] [Accepted: 08/12/2022] [Indexed: 12/14/2022]
Abstract
BACKGROUND It is not yet clear how different irrigation protocols and intracanal laser irradiation effects bioceramic sealers. In this vitro study, we aimed to evaluate the dislocation resistance of a bioceramic root canal sealer after different laser-assisted disinfection protocols and irrigants. METHODS Sixty extracted human straight single-canal teeth were instrumented, and randomly divided into five experimental groups (n=10) according to the disinfection protocol used: group 1, conventional needle irrigation (CI) with sodium hypochlorite (NaOCl)+ethylenediaminotetraacetic acid (EDTA)+NaOCl; group 2, Photon initiated photoacoustic streaming (PIPS) of NaOCl+EDTA+NaOCl; group 3, NaOCl+EDTA+diode laser; group 4, NaOCl+EDTA+photodynamic therapy (PDT); group 5, CI with NaOCl+EDTA+Chlorhexidine (CHX); and control group without any treatment. The root canals were filled with a bioceramic root canal sealer (BioRoot RCS) using the single-cone filling technique. After three weeks of storage, the samples from each canal thirds were transversely sectioned and the push-out test was performed. RESULTS The PIPS group showed the lowest dislocation resistance values in the coronal third (p>0.05), and no difference was observed among the other groups (p<0.05). The dislocation resistance in the middle and apical thirds was the highest in the diode laser group (p<0.05). CONCLUSION Final root canal irradiation with diode laser led to improved dislocation resistance of the bioceramic sealer. PDT did not adversely affect the dislocation resistance of BioRoot RCS. The PIPS reduced the dislocation resistance values in the coronal third, but not in the middle and apical thirds.
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Zhao M, Qiu F, Song J, Zhang C, Liu T, Wu M. The effects of Twinlight laser treatment on the titanium surface proliferation and osteogenic differentiation of mesenchymal stem cells. BMC Oral Health 2022; 22:409. [PMID: 36123683 PMCID: PMC9484218 DOI: 10.1186/s12903-022-02448-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/01/2022] [Accepted: 09/05/2022] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND The study aimed to observe the effects of a Twinlight laser on the titanium surface proliferation of inflammatory Mesenchymal stem cells (MSCs), inflammatory cytokine expression, and osteogenic differentiation. METHODS The MSCs were collected from bone tissue of healthy individuals.The cellular inflammatory model was established with 1 μg/mL lipopolysaccharide (LPS).Under the cellular inflammatory model,divided into five groups: the normal control group (C); the inflammatory control group (L); Er:YAG laser group (L + E); Nd:YAG laser group (L + N); Er:YAG laser and Nd:YAG laser group (L + E + N). The treated cells were inoculated onto titanium disks.The normal and inflammatory MSCs on the surface of titanium surface were examined by CCK-8, scanning election microscopy (SEM), quantitative real-time polymerase chain reaction (qRT‑PCR) and other methods for their proliferation, growth pattern, expression of inflammatory factors Interleukin-6 (IL-6), Interleukin-8 (IL-8) and osteogenic genes Runx2 (Runt-related transcription factor 2) and alkaline phosphatase (ALP), providing the theoretical basis and experimental data for the Twinlight laser-assisted treatment of peri-implantitis. Statistical analyses were performed using a Student's t test with SPSS 17.0 software. RESULTS Through observation using SEM, the cell densities of the L + E + N, L + E, and L + N groups were similar, but cell bodies in the L + E + N group were fuller and each had more than two pseudopodia. The expression level of IL-6 mRNA in the L, L + N, L + E, and L + E + N groups was higher than in group C (P < 0.05), and the expression level of IL-8 mRNA in the L + E + N group was significantly lower than in group L (P < 0.0001). On day 7, the expression level of ALP mRNA in the L, L + N, L + E, and L + E + N groups was lower than in group C (P < 0.05). On day 14, there was no significant difference in the expression level of ALP mRNA among the L + N, L + E + N, and C groups (P > 0.05). On day 7, the expression level of RUNX2 mRNA in the L + E + N group was higher than in group L (P < 0.001). On day 14, the expression level of RUNX2 mRNA in the L + E + N group was higher than in group L (P < 0.01). CONCLUSION Twinlight laser treatment promoted cell proliferation, inhibited the expression of inflammatory cytokines, and effectively enhanced the osteogenic differentiation of cells on a titanium surface.
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Affiliation(s)
- Mengzhen Zhao
- Hebei Key Laboratory of Stomatology, Department of Periodontology (II), Hebei Clinical Research Center for Oral Diseases, School and Hospital of Stomatology, Hebei Medical University, Zhongshan East Road 383, Shijiazhuang, 050017, Hebei, People's Republic of China
- Hebei Key Laboratory of Stomatology, Department of Laser Medicine, Hebei Clinical Research Center for Oral Diseases, School and Hospital of Stomatology, Hebei Medical University, Shijiazhuang, 050017, Hebei, People's Republic of China
| | - Feng Qiu
- Hebei Medical University, Zhongshan East Road 361, Shijiazhuang, 050017, Hebei, People's Republic of China
| | - Jianing Song
- Hebei Key Laboratory of Stomatology, Department of Periodontology (II), Hebei Clinical Research Center for Oral Diseases, School and Hospital of Stomatology, Hebei Medical University, Zhongshan East Road 383, Shijiazhuang, 050017, Hebei, People's Republic of China
- Hebei Key Laboratory of Stomatology, Department of Laser Medicine, Hebei Clinical Research Center for Oral Diseases, School and Hospital of Stomatology, Hebei Medical University, Shijiazhuang, 050017, Hebei, People's Republic of China
| | - Congcong Zhang
- Hebei Key Laboratory of Stomatology, Department of Periodontology (II), Hebei Clinical Research Center for Oral Diseases, School and Hospital of Stomatology, Hebei Medical University, Zhongshan East Road 383, Shijiazhuang, 050017, Hebei, People's Republic of China
- Hebei Key Laboratory of Stomatology, Department of Laser Medicine, Hebei Clinical Research Center for Oral Diseases, School and Hospital of Stomatology, Hebei Medical University, Shijiazhuang, 050017, Hebei, People's Republic of China
| | - Taohong Liu
- Hebei Key Laboratory of Stomatology, Department of Periodontology (II), Hebei Clinical Research Center for Oral Diseases, School and Hospital of Stomatology, Hebei Medical University, Zhongshan East Road 383, Shijiazhuang, 050017, Hebei, People's Republic of China
- Hebei Key Laboratory of Stomatology, Department of Laser Medicine, Hebei Clinical Research Center for Oral Diseases, School and Hospital of Stomatology, Hebei Medical University, Shijiazhuang, 050017, Hebei, People's Republic of China
| | - Mingxuan Wu
- Hebei Key Laboratory of Stomatology, Department of Periodontology (II), Hebei Clinical Research Center for Oral Diseases, School and Hospital of Stomatology, Hebei Medical University, Zhongshan East Road 383, Shijiazhuang, 050017, Hebei, People's Republic of China.
- Hebei Key Laboratory of Stomatology, Department of Laser Medicine, Hebei Clinical Research Center for Oral Diseases, School and Hospital of Stomatology, Hebei Medical University, Shijiazhuang, 050017, Hebei, People's Republic of China.
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Patil D, Gaddalay S, Kabir R. The influence of humidity on bond strength of AH Plus, BioRoot RCS, and Nanoseal-S sealers: An in vitro study. ENDODONTOLOGY 2022. [DOI: 10.4103/endo.endo_231_21] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022] Open
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Silva LABD, Bonifácio KC, Liévana FS, Martins GG, Flores DSH, Leonardo MR, Silva RABD, Paula-Silva FWG. Apical Periodontitis Healing Following Treatment is Impacted by Root Canal Sealer Composition: An in Vivo and in Vitro Investigation. PESQUISA BRASILEIRA EM ODONTOPEDIATRIA E CLÍNICA INTEGRADA 2022. [DOI: 10.1590/pboci.2022.058] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022] Open
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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] [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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Crozeta BM, Lopes FC, Menezes Silva R, Silva-Sousa YTC, Moretti LF, Sousa-Neto MD. Retreatability of BC Sealer and AH Plus root canal sealers using new supplementary instrumentation protocol during non-surgical endodontic retreatment. Clin Oral Investig 2020; 25:891-899. [PMID: 32506324 DOI: 10.1007/s00784-020-03376-4] [Citation(s) in RCA: 25] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/25/2019] [Accepted: 05/25/2020] [Indexed: 12/01/2022]
Abstract
OBJECTIVE The aim of this study was to evaluate the efficacy of supplementary techniques (ultrasonic tip/XP-endo Finisher R) in removing remaining filling materials (gutta-percha/AHPlus/BCSealer) from oval-shaped root canals during non-surgical endodontic retreatment. MATERIAL AND METHODS Twenty-eight distal roots of human mandibular molars with single and oval-shaped canals were initially shaped with a R40 instrument and filled with gutta-percha points and AH Plus (n = 14) or BC Sealer (n = 14) followed by an initial micro-CT scanning. Initial filling material removal was performed in all 28 samples with an R50 instrument, and all samples submitted to a second micro-CT. Supplementary techniques with ultrasonic tips or XP-endo Finisher R instruments were performed in each sealer group, and all samples submitted to a third micro-CT. The volume of remaining filling material was calculated for the entire canal as well as for the coronal, middle, and apical thirds. Statistical analyses were performed using T, ANOVA 3-way, and Tukey tests. RESULTS Lower values of remnant filling material were found for BC Sealer (16.06 ± 14.34) compared to AH Plus (28.30 ± 10.54) (P < 0.001), and considering the supplementary technique, lower values of remnant filling material were found for the ultrasonic tip (18.95 ± 11.05) compared to XP-endo Finisher R (25.41 ± 15.81) (P = 0.025). Ultrasonic instruments significantly reduced the percentage of remaining filling material for both AH Plus (P = 0.04) and BC Sealer (P = 0.02) while XP-endo Finisher R was effective for AHPlus only (P = 0.04). The remaining filling material was observed in all samples regardless the filling material or the supplementary technique employed. CONCLUSIONS Supplementary techniques increased filling material removal; however, none of them was able to render root canals completely free from root fillings. Ultrasonic tips should be considered a good option for endodontic retreatment, especially for bioceramic cases. CLINICAL RELEVANCE Supplementary instrumentation techniques are effective tools to reduce the amount of filling materials during root canal retreatment.
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Affiliation(s)
- Bruno Monguilhott Crozeta
- Department of Restorative Dentistry, School of Dentistry of Ribeirão Preto, University of São Paulo, Sao Paulo, Brazil.,Department of Endodontics, School of Dentistry, University of Texas Health Science Center at Houston, Houston, TX, USA
| | - Fabiane Carneiro Lopes
- Department of Restorative Dentistry, School of Dentistry of Ribeirão Preto, University of São Paulo, Sao Paulo, Brazil
| | - Renato Menezes Silva
- Department of Endodontics, School of Dentistry, University of Texas Health Science Center at Houston, Houston, TX, USA
| | | | | | - Manoel Damião Sousa-Neto
- Department of Restorative Dentistry, School of Dentistry of Ribeirão Preto, University of São Paulo, Sao Paulo, Brazil.
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Bond strength of root canal filling with radicular dentin previously treated with either photobiomodulation or photodynamic therapy: Effect of disinfection protocols. Photodiagnosis Photodyn Ther 2020; 30:101733. [DOI: 10.1016/j.pdpdt.2020.101733] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/25/2020] [Revised: 03/04/2020] [Accepted: 03/09/2020] [Indexed: 12/29/2022]
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Dem K, Wu Y, Kaminga AC, Dai Z, Cao X, Zhu B. The push out bond strength of polydimethylsiloxane endodontic sealers to dentin. BMC Oral Health 2019; 19:181. [PMID: 31395103 PMCID: PMC6686527 DOI: 10.1186/s12903-019-0867-5] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/25/2018] [Accepted: 07/29/2019] [Indexed: 11/23/2022] Open
Abstract
Background The purpose of this experiment was to assess the push out bond strength of Polydimethylsiloxane sealers (GuttaFlow 2 and GuttaFlow Bioseal by Colte’ne/Whaledent, Altstätten, Switzerland). AH Plus (Dentsply, DeTrey, Konstanz, Germany) was used as a reference material for comparison. Methods Thirty root slices were prepared from the middle third of 10 mandibular premolars. Each slice was 1 ± 0.1 mm thick. Three holes, 0.8 mm wide each, were drilled on the axial side of each root slice. These holes were subjected to standardized irrigations and then dried using paper points. Finally, for each root slice, each hole was filled with exactly one of the following three root canal sealers: AH Plus, GuttaFlow 2 and GuttaFlow Bioseal. After all the holes were filled in that way, the root slices were stored on top of phosphate-buffered saline solution (pH 7.2) soaked gauze for 7 days at the temperature of 37 degrees Celsius. Then, for each root canal sealer on a root slice, the universal testing machine was used to measure the push out bond strength. The differences in push out bond strengths between the three sealer samples were assessed using the Friedman test, while the paired comparisons were assessed using Wilcoxon signed rank test with Bonferroni correction. All statistical tests were two-tailed and the significance level was set at the 5%. Results According to the Friedman test the distributions of push out bond strengths of AH Plus, GuttaFlow 2 and GuttaFlow Bioseal were different (P < 0.05). Paired comparisons indicated that AH Plus had a significantly superior push out bond strength than GuttaFlow 2 and GuttaFlow Bioseal, while the push out bond strength of GuttaFlow Bioseal was significantly stronger than that of GuttaFlow 2 (P < 0.01). Conclusions Based on these findings, AH Plus is a better root canal sealer than GuttaFlow 2 and GuttaFlow Bioseal.
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Affiliation(s)
- Kinley Dem
- Centre of Stomatology, Department of Conservative Dentistry and Endodontics, Xiangya Hospital, Central South University, No.87 Xiangya Road, Changsha, 410008, Hunan, China
| | - Yingfang Wu
- Centre of Stomatology, Department of Conservative Dentistry and Endodontics, Xiangya Hospital, Central South University, No.87 Xiangya Road, Changsha, 410008, Hunan, China.
| | - Atipatsa Chiwanda Kaminga
- Xiangya School of Public Health, Department of Epidemiology and Health Statistics, Central South University, Changsha, Hunan, China.,Department of Mathematics and Statistics, Mzuzu University, Private Bag 201, Mzuzu 2, Malawi
| | - Zhuo Dai
- Centre of Stomatology, Department of Conservative Dentistry and Endodontics, Xiangya Hospital, Central South University, No.87 Xiangya Road, Changsha, 410008, Hunan, China
| | - Xin Cao
- Centre of Stomatology, Department of Conservative Dentistry and Endodontics, Xiangya Hospital, Central South University, No.87 Xiangya Road, Changsha, 410008, Hunan, China
| | - Bingyu Zhu
- Centre of Stomatology, Department of Conservative Dentistry and Endodontics, Xiangya Hospital, Central South University, No.87 Xiangya Road, Changsha, 410008, Hunan, China
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Alsubait S, Albader S, Alajlan N, Alkhunaini N, Niazy A, Almahdy A. Comparison of the antibacterial activity of calcium silicate- and epoxy resin-based endodontic sealers against Enterococcus faecalis biofilms: a confocal laser-scanning microscopy analysis. Odontology 2019; 107:513-520. [PMID: 30927150 DOI: 10.1007/s10266-019-00425-7] [Citation(s) in RCA: 26] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/17/2018] [Accepted: 03/19/2019] [Indexed: 11/27/2022]
Abstract
This study assessed the antibacterial activity of BioRoot RCS in comparison with that of the Totalfill BC and AH Plus sealers against Enterococcus faecalis biofilms in dentinal tubules using confocal laser-scanning microscopy. Sixty-six root dentin halves were prepared and sterilized. Three sections were used to ensure sterilization. The remaining were inoculated with E. faecalis. Three specimens were examined to verify the viability of biofilms. The sixty specimens were randomly divided into four groups: AH Plus, BioRoot RCS, Totalfill BC sealer, and no sealer. The specimens were incubated for 1, 7, and 30 days. The specimens were stained and four corners of each disc were scanned. Statistical analysis was performed using two-way ANOVA and Tukey's post hoc test. Almost half of the bacteria were dead in BioRoot RCS group on day 1 and in Totalfill BC group on day 7. All sealers killed significantly more bacteria than the control after 30 days (P < .05). On day 7, Totalfill BC showed a significantly higher percentage of dead bacteria than BioRoot RCS (P < .05). On day 30, the BioRoot RCS group registered the highest percentage of dead cells (61.75%), which was significantly higher than the percentages of the AH Plus and Totalfill BC groups (P < .05). Calcium silicate-based root canal sealers exerted antimicrobial effects against E. faecalis biofilms. The antibacterial activity of BioRoot RCS was significantly higher than that of the Totalfill BC and AH Plus sealers after 30 days of exposure.
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Affiliation(s)
- Sara Alsubait
- Department of Restorative Dental Science, College of Dentistry, King Saud University, Riyadh, Saudi Arabia.
| | | | | | | | - Abdurahman Niazy
- Department of Oral Medicine and Diagnostic Sciences, College of Dentistry, King Saud University, Riyadh, Saudi Arabia
| | - Ahmed Almahdy
- Department of Pediatric Dentistry and Orthodontics, College of Dentistry, King Saud University, Riyadh, Saudi Arabia
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Akbulut MB, Bozkurt DA, Terlemez A, Akman M. The push-out bond strength of BIOfactor mineral trioxide aggregate, a novel root repair material. Restor Dent Endod 2019; 44:e5. [PMID: 30834227 PMCID: PMC6387887 DOI: 10.5395/rde.2019.44.e5] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/30/2018] [Revised: 01/11/2019] [Accepted: 01/12/2019] [Indexed: 11/23/2022] Open
Abstract
Objectives The aim of this in vitro study was to evaluate the push-out bond strength of a novel calcium silicate-based root repair material-BIOfactor MTA to root canal dentin in comparison with white MTA-Angelus (Angelus) and Biodentine (Septodont). Materials and Methods The coronal parts of 12 central incisors were removed and the roots were embedded in acrylic resin blocks. Midroot dentin of each sample was horizontally sectioned into 1.1 mm slices and 3 slices were obtained from each root. Three canal-like standardized holes having 1 mm in diameter were created parallel to the root canal on each dentin slice with a diamond bur. The holes were filled with MTA-Angelus, Biodentine, or BIOfactor MTA. Wet gauze was placed over the specimens and samples were stored in an incubator at 37°C for 7 days to allow complete setting. Then samples were subjected to the push-out test method using a universal test machine with the loading speed of 1 mm/min. Data was statistically analyzed using Friedman test and post hoc Wilcoxon signed rank test with Bonferroni correction. Results There were no significant differences among the push-out bond strength values of MTA-Angelus, Biodentine, and BIOfactor MTA (p > 0.017). Most of the specimens exhibited cohesive failure in all groups, with the highest rate found in Biodentine group. Conclusions Based on the results of this study, MTA-Angelus, Biodentine, and BIOfactor MTA showed similar resistances to the push-out testing.
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Affiliation(s)
- Makbule Bilge Akbulut
- Department of Endodontics, Faculty of Dentistry, Necmettin Erbakan University, Konya, Turkey
| | - Durmus Alperen Bozkurt
- Department of Endodontics, Faculty of Dentistry, Necmettin Erbakan University, Konya, Turkey
| | - Arslan Terlemez
- Department of Endodontics, Faculty of Dentistry, Necmettin Erbakan University, Konya, Turkey
| | - Melek Akman
- Department of Endodontics, Faculty of Dentistry, Necmettin Erbakan University, Konya, Turkey
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Altan H, Göztaş Z, İnci G, Tosun G. Comparative evaluation of apical sealing ability of different root canal sealers. Eur Oral Res 2019; 52:117-121. [PMID: 30775713 DOI: 10.26650/eor.2018.438] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/12/2016] [Revised: 03/10/2017] [Accepted: 04/05/2017] [Indexed: 12/25/2022] Open
Abstract
Purpose The aim of this study was to compare the short and long term apical sealing ability of different root canal sealers. Materials and methods Fifty-five extracted human anterior single-root teeth were used. The coronal part of each tooth was removed and the root canals were prepared with NiTi rotary instruments. Teeth were divided into 5 study groups; Group I: MTA Fillapex (Angelus, Brazil); Group II: Sealapex (Sybron-Kerr, Romulus, MI, USA) and Group III: AH Plus (Dentsply, Konstanz, Germany) (n=15) and negative and positive control groups (n=5). The quality of root canal sealing was assessed by a fluid filtration method performed at 24 h and 180-day time intervals. Kruskal Wallis and Mann Whitney U tests were used to compare the groups. Results At 24 h evaluation, MTA Fillapex presented significantly less microleakage than the Sealapex and AH Plus (p<0.05). At long term interval (180-day), Sealapex and AH Plus presented significantly less microleakage than the MTA Fillapex (p<0.05). Conclusion Sealapex and AH Plus showed significantly better sealing abilities than MTA Fillapex in the long term.
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Affiliation(s)
- Halenur Altan
- Department of Pedodontics, Gaziosmanpaşa University, Faculty of Dentistry, Tokat, Turkey
| | | | | | - Gül Tosun
- Department of Pedodontics, Selçuk University, Faculty of Dentistry, Tokat, Turkey
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Jardim Del Monaco R, Tavares de Oliveira M, de Lima AF, Scarparo Navarro R, Zanetti RV, de Fátima Teixeira da Silva D, Horliana ACRT. Influence of Nd:YAG laser on the penetration of a bioceramic root canal sealer into dentinal tubules: A confocal analysis. PLoS One 2018; 13:e0202295. [PMID: 30133509 PMCID: PMC6104986 DOI: 10.1371/journal.pone.0202295] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/10/2018] [Accepted: 07/31/2018] [Indexed: 12/14/2022] Open
Abstract
OBJECTIVE The aim of this in vitro study, is to evaluate the penetration of a bioceramic root canal sealer into dentinal tubules at 3 mm and 5 mm from the apex after Nd:YAG laser irradiation. METHODS Forty freshly extracted human mandibular premolars were prepared using Reciproc® and irrigated with 17% ethylenediaminetetraacetic acid (EDTA). Teeth were divided into 4 groups: group 1, obturated with control sealer (AH Plus®); group 2, obturated with bioceramic sealer (Endosequence BC Sealer®); group 3, Nd:YAG laser + control sealer (AH Plus®); and group 4, Nd:YAG laser + bioceramic sealer (Endosequence BC Sealer®). The samples were transversely sectioned 3 mm and 5 mm from the apex and examined using confocal laser scanning microscopy. Two parameters were measured: 1) sealer penetration into dentinal tubules of the root canal and 2) sealer penetration into the perimeter of the root canal walls. RESULTS Penetration analysis showed that bioceramic sealer had a higher penetration at depths of 3 and 5 mm than that of the control sealer, regardless of laser use (p <0.05). Perimeter analysis showed that there was no difference between both sealers at a depth of 3 mm (p <0.05), regardless of laser use. At a depth of 5 mm, bioceramic sealer and laser showed a greater perimeter of penetration (p <0.05) than the control sealer. CONCLUSION The use of Nd:YAG laser did not compromise the penetration of bioceramic sealer into dentinal tubules of root canals at 3 mm and 5 mm from the apex.
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Affiliation(s)
- Rodrigo Jardim Del Monaco
- Postgraduate Program in Biophotonics Applied to Health Sciences, University Nove de Julho, São Paulo, SP, Brazil
| | | | | | - Ricardo Scarparo Navarro
- Department of Postgraduate Program in Bioengineering and Biomedical Engineering, University Brazil, São Paulo, SP, Brazil
| | - Raquel Virgínia Zanetti
- Postgraduate Program in Prosthetic Dentistry, São Leopoldo Mandic University, Campinas, SP, Brazil
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Brichko J, Burrow MF, Parashos P. Design Variability of the Push-out Bond Test in Endodontic Research: A Systematic Review. J Endod 2018; 44:1237-1245. [PMID: 29935874 DOI: 10.1016/j.joen.2018.05.003] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2017] [Revised: 04/04/2018] [Accepted: 05/06/2018] [Indexed: 10/28/2022]
Abstract
INTRODUCTION There is limited literature on the impact of testing variables on the push-out bond test (POBT). This review identified designs of the POBT used in the endodontic literature and aimed to determine which experimental variables may influence the push-out bond strength (POBS). METHODS A systematic review based on PRISMA guidelines was performed by searching the PubMed, SCOPUS, and Cochrane library databases using terms including push-out and dislocation resistance and descriptions of endodontic materials. Test variables assessed included method of root preparation, timing of sectioning compared with filling, thickness, diameter and taper of sections, and plunger size and velocity. The POBS of 3 common materials (gutta-percha and AH Plus, mineral trioxide aggregate, and Biodentine) were collected from investigations, and a comparison was attempted. RESULTS One hundred thirty-three studies assessed the POBS of root-filling materials, 68 assessed root repair cements/root-end filling materials, and 16 assessed orifice barrier materials other than mineral trioxide aggregate. There was significant variation in all of the assessed variables, resulting in a large range of reported values for the POBS of the various materials. Because of this heterogeneity in study design, no further statistical analysis of the impact of the test variables on POBS was possible. CONCLUSIONS There was considerable variation in the POBT design used in endodontic research. Greater standardization is required for future research as well as accurate reporting for all test variables to assess the impact of specific design variables on POBS.
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Affiliation(s)
- James Brichko
- Melbourne Dental School, University of Melbourne, Melbourne, Victoria, Australia
| | - Michael F Burrow
- Melbourne Dental School, University of Melbourne, Melbourne, Victoria, Australia
| | - Peter Parashos
- Melbourne Dental School, University of Melbourne, Melbourne, Victoria, Australia.
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Trindade TF, Barbosa AFS, Castro-Raucci LMSD, Silva-Sousa YTC, Colucci V, Raucci-Neto W. Chlorhexidine and proanthocyanidin enhance the long-term bond strength of resin-based endodontic sealer. Braz Oral Res 2018; 32:e44. [PMID: 29846387 DOI: 10.1590/1807-3107bor-2018.vol32.0044] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/06/2017] [Accepted: 04/11/2018] [Indexed: 11/22/2022] Open
Abstract
The aim of this study was to evaluate the effects of proanthocyanidin (PA) and chlorhexidine (CHX) on the bond strength (BS), failure pattern, and resin-dentin interface morphology of the endodontic sealers EndoREZ and AH Plus after 24 h and 6 months of water storage. A total of 120 prepared bovine roots were divided into six groups: AH Plus, CHX+AH Plus, PA+AH Plus, EndoREZ, CHX+EndoREZ, and PA+EndoREZ. Dentin was treated for 1 or 5 min with 2% CHX or 15% PA, respectively. Roots were filled and stored in water for 24 h or 6 months (n = 10). Root slices were subjected to push-out test and scanning electron microscopy (SEM). Data were compared using two-way ANOVA and student's t-test (α = 5%). BS decreased over time for AH Plus and untreated EndoREZ (p < 0.05). At 24 h, AH Plus had higher BS than EndoREZ (p < 0.001), with no differences among treatments for both sealers (p > 0.05). At 6 months, EndoREZ had higher BS values for CHX and PA than control (p < 0.05). AH Plus had higher BS than EndoREZ (p < 0.001), while with CHX or PA, similar BS was observed in both sealers (p > 0.05). Cohesive and mixed failures were observed in all groups. SEM revealed sealer tags in the root dentin. In conclusion, BS decreased with time and AH Plus had higher BS than EndoREZ in untreated dentin; however, CHX or PA enhanced long-term BS of EndoREZ. Overall, dentin treatment affected failure pattern and resin-dentin interface morphology, particularly for EndoREZ.
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Affiliation(s)
| | | | | | | | - Vivian Colucci
- Universidade de Ribeirão Preto - Unaerp, School of Dentistry, Ribeirao Preto, SP, Brazil
| | - Walter Raucci-Neto
- Universidade de Ribeirão Preto - Unaerp, School of Dentistry, Ribeirao Preto, SP, Brazil
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Menezes M, Prado M, Gomes B, Gusman H, Simão R. Effect of photodynamic therapy and non-thermal plasma on root canal filling: analysis of adhesion and sealer penetration. J Appl Oral Sci 2017; 25:396-403. [PMID: 28877278 PMCID: PMC5595112 DOI: 10.1590/1678-7757-2016-0498] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/26/2016] [Accepted: 01/09/2017] [Indexed: 11/22/2022] Open
Abstract
Objective The aim of this study was to evaluate the effect of photodynamic therapy (PDT) and non-thermal plasma (NTP) on adhesion and sealer penetration in root canals. Material and Methods Sixty single-rooted premolars were used. The teeth were prepared using a crown-down technique. NaOCl and EDTA were used for irrigation and smear layer removal, respectively. The root canals were divided into three groups: control, PDT, and NTP. After treatments, the roots were filled using gutta-percha and either AH Plus (AHP) or MTA Fillapex (MTAF) sealers. Samples were sectioned at 4, 8, and 12 mm from the apex (1-mm slices)and analyzed by the push-out bond strength test (adhesion) and confocal laser scanning microscopy (sealer penetration). Data were statistically evaluated using Kruskal-Wallis, Dunn’s, and Spearman’s tests. Results Regarding AHP, bond strength was similar in the NTP group and in the control group, but significantly lower in the PDT group. As to MTAF, both therapies showed lower values than the control group. In the confocal analysis of AHP, maximum and mean penetration, and penetrated area were statistically higher in the control group than in the PDT and NTP groups. Penetrated perimeter was similar among groups. Regarding MTAF, all parameters yielded better results in the NTP than in the control group. The PDT and control groups showed similar results except for penetrated area. Conclusion PDT and plasma therapy affected the adhesion and sealer penetration of root canals filled with AH Plus and MTA Fillapex and there is no positive correlation between adhesion and sealer penetration.
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Affiliation(s)
- Marilia Menezes
- Universidade Federal do Rio de Janeiro, Departamento de Engenharia Metalúrgica e de Materiais, Rio de Janeiro, RJ, Brasil
| | - Maíra Prado
- Universidade Federal do Rio de Janeiro, Departamento de Engenharia Metalúrgica e de Materiais, Rio de Janeiro, RJ, Brasil
| | - Brenda Gomes
- Universidade Estadual de Campinas, Faculdade de Odontologia de Piracicaba, Departamento de Odontologia Restauradora, Área de Endodontia, Piracicaba, SP, Brasil
| | - Heloisa Gusman
- Universidade Federal do Rio de Janeiro, Departamento de Clínica Odontológica, Área de Endodontia, Rio de Janeiro, RJ, Brasil
| | - Renata Simão
- Universidade Federal do Rio de Janeiro, Departamento de Engenharia Metalúrgica e de Materiais, Rio de Janeiro, RJ, Brasil
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Yavari H, Ghasemi N, Divband B, Rezaei Y, Jabbari G, Payahoo S. The effect of photodynamic therapy and polymer solution containing nano-particles of Ag /ZnO on push-out bond strength of the sealers AH-Plus and MTA Fillapex. J Clin Exp Dent 2017; 9:e1109-e1114. [PMID: 29075413 PMCID: PMC5650213 DOI: 10.4317/jced.54069] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/22/2017] [Accepted: 07/19/2017] [Indexed: 11/27/2022] Open
Abstract
Background The aim of this in vitrostudy was to examine and compare the effect of photodynamic therapy and solution containing nano particles Ag/ZnO on adhesion of endodontic sealers to dentinal walls of human root canal. Material and Methods Ninty single-rooted human teeth were selected and their clinical crown was cut from the cemento-enamel junction zone. Canals were prepared by RaCe rotary system and the smear layer was removed using 17% EDTA and 5.25% NaOCl. Samples were randomly divided into two groups of AH Plus and MTA Fillapex based on the sealer type and each group based on antimicrobial method was divided into two sub-groups of photodynamic therapy and polymer containing nano particles of Ag / ZnO and a control sub-group (N = 15). After obturation of canals with gutta-percha and sealers mentioned, the samples were incubated for a week at a humidity of 95% and 37°C and then 2mm thick discs were prepared from the middle region of roots for Push-out test. The maximum failure force was recorded in newton and converted to MPa. Then, 3 random specimens of each subgroup were evaluated by scanning electron microscopy. Statistical analysis was performed by Two way ANOVA and (P<0.05) was considered significant. Results The highest (4.84 ± 1.63) and lowest (0.16 ± 0.075) push-out bond strength values were obtained in (AH Plus-PDT) and (MTA Fillapex-Ag/ZnO) respectively. Independent of antimicrobial method, AH Plus bond strength was significantly higher than the MTA Fillapex (p<0.001). For both sealers, PDT increased the bond strength significantly (p<0.001). Conclusions Photodynamic therapy has a positive effect on the bond strength of AH Plus and MTA Fillapex sealers. Key words:AH Plus, MTA Fillapex, Nano particles, Photodynamic therapy, Push-out.
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Affiliation(s)
- Hamidreza Yavari
- DDS, MSc, Associate Professor, Department of Endodontics, Dental Faculty, Tabriz University (Medical Sciences), Tabriz, Iran
| | - Negin Ghasemi
- DDS, MSc, Assistant Professor, Department of Endodontics, Dental and Periodontal Research Center, Dental Faculty, Tabriz University (Medical Sciences), Tabriz, Iran
| | - Baharak Divband
- Assistant Professor, Department of Chemistry, Tabriz University, Tabriz, Iran
| | - Yashar Rezaei
- Assistant Professor, Department of Dental Biomaterials, Faculty of Dentistry, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Golchin Jabbari
- DDS, Endodontic Department, Dental and Periodontal Research Center, Faculty of Dentistry, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Salar Payahoo
- DDS, Department of Oral and maxillofacial radiology, Dental and Periodontal Research Center, Faculty of Dentistry, Tabriz University of Medical Sciences, Tabriz, Iran
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Wiesse PEB, Silva‐Sousa YT, Pereira RD, Estrela C, Domingues LM, Pécora JD, Sousa‐Neto MD. Effect of ultrasonic and sonic activation of root canal sealers on the push‐out bond strength and interfacial adaptation to root canal dentine. Int Endod J 2017; 51:102-111. [DOI: 10.1111/iej.12794] [Citation(s) in RCA: 34] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/06/2016] [Accepted: 05/16/2017] [Indexed: 12/28/2022]
Affiliation(s)
- P. E. B. Wiesse
- Department of Restorative Dentistry School of Dentistry of Ribeirão Preto University of São Paulo Ribeirão Preto SPBrazil
| | - Y. T. Silva‐Sousa
- Department of Endodontics Faculty of Dentistry University of Ribeirão Preto Ribeirão Preto SPBrazil
| | - R. D. Pereira
- Department of Restorative Dentistry School of Dentistry of Ribeirão Preto University of São Paulo Ribeirão Preto SPBrazil
| | - C. Estrela
- Department of Stomatological Sciences Federal University of Goiás Goiânia GO Brazil
| | - L. M. Domingues
- Department of Endodontics Faculty of Dentistry University of Ribeirão Preto Ribeirão Preto SPBrazil
| | - J. D. Pécora
- Department of Restorative Dentistry School of Dentistry of Ribeirão Preto University of São Paulo Ribeirão Preto SPBrazil
| | - M. D. Sousa‐Neto
- Department of Restorative Dentistry School of Dentistry of Ribeirão Preto University of São Paulo Ribeirão Preto SPBrazil
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Gomes KGF, Faria NS, Neto WR, Colucci V, Gomes EA. Influence of laser irradiation on the push-out bond strength between a glass fiber post and root dentin. J Prosthet Dent 2017; 119:97-102. [PMID: 28461044 DOI: 10.1016/j.prosdent.2017.01.013] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/09/2016] [Revised: 01/05/2017] [Accepted: 01/05/2017] [Indexed: 11/25/2022]
Abstract
STATEMENT OF PROBLEM A major issue related to the failure of endodontically treated teeth restored with an intraradicular post is gradual debonding of the glass fiber post, resin cement, and dentin. PURPOSE The purpose of this in vitro study was to evaluate the influence of laser irradiation on the push-out bond strength of glass fiber posts to radicular dentin. MATERIAL AND METHODS Thirty-two mandibular bovine incisors were endodontically treated and divided into 4 groups according to the surface treatment of the post: silane control (GC); irradiation with Er:YAG (GYAG); irradiation with Er,Cr:YSGG (GCR); and 980-nm diode laser (GDI) application. After surface treatment, the glass fiber posts were cemented with dual adhesive resin cement. To evaluate bond strength, the specimens were subjected to a push-out test at a crosshead speed of 0.5 mm/min using a universal testing machine. Failure mode was analyzed using stereomicroscopy. The surface morphology was evaluated qualitatively after surface treatment by using confocal laser microscopy. The push-out test data (MPa) were analyzed using a linear mixed effects model and the Bonferroni test (α=.05). RESULTS At the cervical third, no significant differences were observed between the GC and GCR groups (P=1.00), and both of the groups exhibited higher bond strength. At the middle and apical thirds, the GCR group revealed higher bond strength, which was significantly different from that observed in all other groups (P<.05). No statistical differences were observed among the other tested protocols (GC, GYAG, and GDI groups; P=1.00). Adhesive failure was predominant in all groups. CONCLUSIONS Irradiation with Er,Cr:YSGG improved the bond strength of the cement-post-dentin interfaces.
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Affiliation(s)
- Karla G F Gomes
- Postgraduate student, School of Dentistry, University of Ribeirão Preto, São Paulo, Brazil
| | - Natália S Faria
- Doctoral student, School of Dentistry, University of Ribeirão Preto, São Paulo, Brazil
| | - Walter R Neto
- Professor, School of Dentistry, University of Ribeirão Preto, São Paulo, Brazil
| | - Vivian Colucci
- Professor, School of Dentistry, University of Ribeirão Preto, São Paulo, Brazil
| | - Erica A Gomes
- Professor, School of Dentistry, University of Ribeirão Preto, São Paulo, Brazil.
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Patil P, Banga KS, Pawar AM, Pimple S, Ganeshan R. Influence of root canal obturation using gutta-percha with three different sealers on root reinforcement of endodontically treated teeth. An in vitro comparative study of mandibular incisors. J Conserv Dent 2017; 20:241-244. [PMID: 29259360 PMCID: PMC5721505 DOI: 10.4103/jcd.jcd_233_16] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022] Open
Abstract
Aim The purpose of this in vitro study was to evaluate the vertical force required to fracture mandibular incisor teeth, obturated using gutta-percha with three different sealers. Materials and Methods Seventy-five extracted mandibular incisors with intact and fully formed apices, exhibiting single root and canal were acquired. The teeth were decoronated obtaining a root segments of 15 mm and were divided into five groups (n = 15). Group 1: left uninstrumented and unfilled (negative control). For groups 2-5, samples were instrumented using Protaper NEXT (X1 and X2). Group 2: left unobturated (positive control). Groups 3-5 were obturated using lateral compaction by gutta-percha and three sealers (AH Plus®, Apexit®, and EndoSequence® BioCeramic™). All the samples were prepared for fracture testing and vertical load was applied till fracture. Statistical analysis was performed using ANOVA and Tukey's post hoc test, for the data recorded of the force required in Newton (N). Results The load required to fracture exhibited a significant difference. The intergroup analysis revealed, samples obturated using bioceramic sealer exhibited higher fracture resistance (P < 0.01). Conclusion The use of gutta-percha and a root canal sealer reinforces the root dentin, leading to increased fracture resistance against vertical forces. Bioceramic sealer group in them exhibited better results.
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Affiliation(s)
- Pravin Patil
- Department of Conservative Dentistry and Endodontics, Nair Hospital Dental College, Mumbai, Maharashtra, India
| | - Kulwinder Singh Banga
- Department of Conservative Dentistry and Endodontics, Nair Hospital Dental College, Mumbai, Maharashtra, India
| | - Ajinkya M Pawar
- Department of Conservative Dentistry and Endodontics, Nair Hospital Dental College, Mumbai, Maharashtra, India
| | - Sandeep Pimple
- Department of Periodontology, Nair Hospital Dental College, Mumbai, Maharashtra, India
| | - Raguram Ganeshan
- Department of Prosthodontics, Nair Hospital Dental College, Mumbai, Maharashtra, India
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Bioceramic-Based Root Canal Sealers: A Review. Int J Biomater 2016; 2016:9753210. [PMID: 27242904 PMCID: PMC4868912 DOI: 10.1155/2016/9753210] [Citation(s) in RCA: 129] [Impact Index Per Article: 16.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/27/2015] [Accepted: 04/06/2016] [Indexed: 11/17/2022] Open
Abstract
Bioceramic-based root canal sealers are considered to be an advantageous technology in endodontics. The aim of this review was to consider laboratory experiments and clinical studies of these sealers. An extensive search of the endodontic literature was made to identify publications related to bioceramic-based root canal sealers. The outcome of laboratory and clinical studies on the biological and physical properties of bioceramic-based sealers along with comparative studies with other sealers was assessed. Several studies were evaluated covering different properties of bioceramic-based sealers including physical properties, biocompatibility, sealing ability, adhesion, solubility, and antibacterial efficacy. Bioceramic-based sealers were found to be biocompatible and comparable to other commercial sealers. The clinical outcomes associated with the use of bioceramic-based root canal sealers are not established in the literature.
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Keleş A, Alcin H, Kamalak A, Versiani MA. Oval-shaped canal retreatment with self-adjusting file: a micro-computed tomography study. Clin Oral Investig 2016; 18:1147-1153. [PMID: 23959377 DOI: 10.1007/s00784-013-1086-0] [Citation(s) in RCA: 41] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/07/2013] [Accepted: 08/05/2013] [Indexed: 11/25/2022]
Abstract
OBJECTIVES The aim of this study was to assess the efficacy of removing the filling material from oval-shaped canals with rotary retreatment files, with or without the additional use of self-adjusting file (SAF), using micro-computed tomography. MATERIALS AND METHODS Oval-shaped canals from 20 maxillary premolars were prepared and assigned to two groups (n = 10), according to the obturation technique: cold lateral condensation (CLC) or vertical condensation (VC). Then, retreatment procedure was performed with retreatment rotary instruments followed by SAF. The specimens were scanned after each procedure and the volume of the filling material calculated. Median and interquartile range (IQR) percentages of the remaining filling material after each retreatment technique were statistically compared by Wilcoxon and Mann–Whitney U tests with a significance level of 5 %. RESULTS The median percentage volume of the filling residue after rotary retreatment procedure was 1.59 (IQR = 1.26) and 0.42 (IQR = 0.86) in the CLC and VC groups, respectively (p < 0.05). After the use of SAF, the median percentage was 1.26 (IQR = 0.75) and 0.12 (IQR = 0.53) in the CLC and VC groups, respectively (p < 0.05). Statistically significant difference was also observed within the group after the additional use of SAF (p < 0.05). CONCLUSIONS None of the retreatment procedures completely removed the filling material. The additional use of the SAF improved the removal of filling material after the retreatment procedure with rotary instruments. CLINICAL RELEVANCE Filling material left after retreatment procedure may harbour necrotic tissue and bacteria, which could lead to a persistent disease and reinfection of the root canal system. The additional use of self-adjusting file after the conventional retreatment procedures may improve root canal cleanliness, allowing a better action of the irrigating solution.
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Affiliation(s)
- Ali Keleş
- Department of Endodontics, Faculty of Dentistry, İnönü University, Malatya, Turkey
| | - Hatice Alcin
- Department of Endodontics, Faculty of Dentistry, İnönü University, Malatya, Turkey
| | - Aliye Kamalak
- Department of Endodontics, Faculty of Dentistry, İnönü University, Malatya, Turkey
| | - Marco A Versiani
- Department of Restorative Dentistry, Faculty of Dentistry, University of São Paulo, Ribeirão Preto, São Paulo, Brazil. .,, Av. Do Café s/n, Bairro Monte Alegre, Ribeirão Preto, São Paulo, 14.040-904, Brazil.
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PAULA ACFD, BRITO-JÚNIOR M, ARAÚJO CCC, SOUSA-NETO MD, CRUZ-FILHO AMD. Drying protocol influence on the bond strength and apical sealing of three different endodontic sealers. Braz Oral Res 2016; 30:S1806-83242016000100248. [DOI: 10.1590/1807-3107bor-2016.vol30.0050] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/05/2015] [Accepted: 11/22/2015] [Indexed: 11/21/2022] Open
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KÜÇÜKKAYA Eren S, AKSEL H, SERPER A. Effect of placement technique on the push-out bond strength of calcium-silicate based cements. Dent Mater J 2016; 35:742-747. [DOI: 10.4012/dmj.2016-094] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Affiliation(s)
| | - Hacer AKSEL
- Department of Endodontics, Faculty of Dentistry, Hacettepe University
| | - Ahmet SERPER
- Department of Endodontics, Faculty of Dentistry, Hacettepe University
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HORIUCHI ZHFN, SILVA-SOUSA YTC, RAUCCI NETO W, RACHED-JUNIOR FJA, SOUZA-GABRIEL AE, SILVA SRCD, ALFREDO E. Effect of thermoplastic filling techniques on the push-out strength of root sealing materials. Braz Oral Res 2016; 30:S1806-83242016000100207. [DOI: 10.1590/1807-3107bor-2016.vol30.0001] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/23/2015] [Accepted: 07/06/2015] [Indexed: 11/22/2022] Open
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Brito-Júnior M, Leoni GB, Pereira RD, Faria-e-Silva AL, Gomes EA, Silva-Sousa YT, Sousa-Neto MD. A Novel Dentin Push-out Bond Strength Model That Uses Micro–Computed Tomography. J Endod 2015; 41:2058-63. [DOI: 10.1016/j.joen.2015.09.009] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/09/2015] [Revised: 09/14/2015] [Accepted: 09/15/2015] [Indexed: 10/22/2022]
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30
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Martins CV, Leoni GB, Oliveira HF, Arid J, Queiroz AM, Silva LAB, Sousa-Neto MD. Influence of therapeutic cancer radiation on the bond strength of an epoxy- or an MTA-based sealer to root dentine. Int Endod J 2015; 49:1065-1072. [DOI: 10.1111/iej.12556] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/11/2015] [Accepted: 09/23/2015] [Indexed: 01/25/2023]
Affiliation(s)
- C. V. Martins
- Department of Restorative Dentistry; School of Dentistry of Ribeirão Preto; University of São Paulo; Ribeirão Preto Brazil
| | - G. B. Leoni
- Department of Restorative Dentistry; School of Dentistry of Ribeirão Preto; University of São Paulo; Ribeirão Preto Brazil
| | - H. F. Oliveira
- Department of Internal Medicine; Faculty of Medicine of Ribeirão Preto; University of São Paulo; Ribeirão Preto Brazil
| | - J. Arid
- Department of Pediatric Dentistry; School of Dentistry of Ribeirão Preto; University of São Paulo; Ribeirão Preto Brazil
| | - A. M. Queiroz
- Department of Pediatric Dentistry; School of Dentistry of Ribeirão Preto; University of São Paulo; Ribeirão Preto Brazil
| | - L. A. B. Silva
- Department of Pediatric Dentistry; School of Dentistry of Ribeirão Preto; University of São Paulo; Ribeirão Preto Brazil
| | - M. D. Sousa-Neto
- Department of Restorative Dentistry; School of Dentistry of Ribeirão Preto; University of São Paulo; Ribeirão Preto Brazil
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Push-out bond strength of different root canal obturation systems to root canal dentin. ACTA ACUST UNITED AC 2015. [DOI: 10.1016/j.tdj.2015.05.006] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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32
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Evaluation of Effects on the Adhesion of Various Root Canal Sealers after Er:YAG Laser and Irrigants Are Used on the Dentin Surface. J Endod 2015; 41:1331-6. [DOI: 10.1016/j.joen.2015.03.004] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2014] [Revised: 03/05/2015] [Accepted: 03/06/2015] [Indexed: 12/27/2022]
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Lahor-Soler E, Miranda-Rius J, Brunet-Llobet L, Farré M, Pumarola J. In vitro study of the apical microleakage with resilon root canal filling using different final endodontic irrigants. J Clin Exp Dent 2015; 7:e212-7. [PMID: 26155335 PMCID: PMC4483326 DOI: 10.4317/jced.51755] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/02/2014] [Accepted: 12/11/2014] [Indexed: 11/12/2022] Open
Abstract
Background Endodontic microleakage or microfiltration refers to the percolation of fluids and micro-organisms at the interface of the obturation material and the walls of the root canal system. The aim of this in vitro study was to compare apical microfiltration of Resilon root canal filling by employing three different final irrigant solutions. Material and Methods 128 single-rooted teeth were employed. The crowns were sectioned horizontally at the cemento-enamel junction and instrumented with 5.25% sodium hypochlorite (NaOCl) and 17% EDTA gel to obtain an instrumented 040 apical caliber. An intermediate irrigation was performed with distilled water. The roots were then randomly assigned to three experimental groups with three different final irrigants: (A) 20% citric acid (CA); (B) 2% chlorhexidine digluconate (CHX); and (C) 5.25% NaOCl, plus two control groups (positive and negative). They were then dried, obturated with RealSeal™, and cleared by Robertson’s technique. Apical microleakage was measured by the dye penetration method and assessed with a 4.5x stereomicroscope. Data were statistically analyzed by one way ANOVA and post hoc analysis for multiple comparisons. Results Mean and standard deviations for apical microleakage were: 2% CHX (0.24 mm ± 0.22), 20% CA (0.25 mm ± 0.20), and 5.25% NaOCl (0.87 mm ± 0.32). Significant differences were reported among the group irrigated with NaOCl, CHX and CA (P<0.001). Conclusions A higher rate of apical microleakage was observed when the final irrigation was performed with NaOCl whilst lower rates were reported for CHX and CA. Key words:Apical filtration, endodontic irrigation, resin-based sealers, adhesion, root canal filling.
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Affiliation(s)
- Eduard Lahor-Soler
- DDS, Endodontics Unit. Departament d'Odontostomatologia. Facultat d'Odontologia. Universitat de Barcelona, Barcelona, Spain
| | - Jaume Miranda-Rius
- MD, DDS, PhD, Periodontics Unit. Departament d'Odontostomatologia. Facultat d'Odontologia. Universitat de Barcelona, Barcelona, Spain
| | - Lluís Brunet-Llobet
- MD, DDS, PhD, Paediatric Dentistry and Orthodontics Unit. Servei d'Odontologia. Hospital Universitari Sant Joan de Déu. Universitat de Barcelona, Barcelona, Spain
| | - Magí Farré
- MD, PhD, Clinical Pharmacology Unit. Hospital Universitari Germans Trias i Pujol-IGTP and Hospital del Mar Medical Research Institute-IMIM. Facultat de Medicina. Universitat Autònoma de Barcelona, Barcelona, Spain
| | - Josep Pumarola
- MD, DDS, PhD, Endodontics Unit. Departament d'Odontostomatologia. Facultat d'Odontologia. Universitat de Barcelona, Barcelona, Spain
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Santana FR, Soares CJ, Ferreira JM, Valdivi ADCM, Souza JBD, Estrela C. Effect of root canal sealer and artificial accelerated aging on fibreglass post bond strength to intraradicular dentin. J Clin Exp Dent 2014; 6:e350-6. [PMID: 25593655 PMCID: PMC4282900 DOI: 10.4317/jced.51465] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/11/2014] [Accepted: 05/01/2014] [Indexed: 11/05/2022] Open
Abstract
OBJECTIVES To evaluate the effect of root canal sealers (RCS) and specimen aging on the bond strength of fibre posts to bovine intraradicular dentin. MATERIAL AND METHODS 80 teeth were used according the groups - Sealapextm, Sealer 26®, AH Plus® and specimens aging - test with no aging and with aging. The canals prepared were filled using one of each RCS. The posts were cemented. Roots were cross-sectioned to obtain two slices of each third. Samples were submitted to push-out test. Failure mode was evaluated under a confocal microscope. The data were analysed by ANOVA, Tukey's, and Dunnet tests (α = 0.05). RESULTS No significant difference was detected among RCS. Aged control presented higher bond strength than immediate control. The aging did not result significant difference. Adhesive cement-dentin failure was prevalent in all groups. CONCLUSIONS RCS interfered negatively with bonding of fibreglass posts cemented with self-adhesive resin cement to intraradicular dentin. Key words:Fibreglass post, bond strength, root dentin, endodontic sealer, aging.
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Affiliation(s)
- Fernanda-Ribeiro Santana
- DDS, MSc, PhD. Department of Stomatologic Sciences, School of Dentistry, Federal University of Goiás, GO, Brazil
| | - Carlos-José Soares
- DDS, MSc, PhD. Operative Dentistry and Dental Materials Department, School of Dentistry, Federal University of Uberlândia, Uberlândia, MG, Brazil
| | - Josemar-Martins Ferreira
- DDS, MSc, PhD, Post-graduate student. School of Dentistry, Federal University of Uberlândia, MG, Brazil
| | | | - João-Batista-de Souza
- DDS, MSc, PhD. Department of Prevention and Oral Rehabilitation, School of Dentistry, Federal University of Goiás, GO, Brazil
| | - Carlos Estrela
- DDS, MSc, PhD. Department of Stomatologic Sciences, School of Dentistry, Federal University of Goiás, GO, Brazil
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Martinho FC, Carvalho CAT, Oliveira LD, de Lacerda AJF, Xavier ACC, Augusto MG, Zanatta RF, Pucci CR. Comparison of different dentin pretreatment protocols on the bond strength of glass fiber post using self-etching adhesive. J Endod 2014; 41:83-7. [PMID: 25246368 DOI: 10.1016/j.joen.2014.07.018] [Citation(s) in RCA: 40] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2014] [Revised: 06/23/2014] [Accepted: 07/09/2014] [Indexed: 11/28/2022]
Abstract
INTRODUCTION This study compared the influence of different irrigants with and without ultrasound or laser irradiation on the bond strength of glass fiber posts using a self-etching adhesive in a supplementary dentin pretreatment. METHODS Ninety bovine incisor roots were divided into 3 groups according to the irrigant tested: 2% chlorhexidine (CHX) (n = 30); 2.5% sodium hypochlorite (NaOCl) (n = 30), and saline solution (control) (n = 30). Each group was randomly divided into 3 subgroups according to the supplementary dentin pretreatment: ultrasound, Nd:YAG laser, and nonsupplemented (control). A self-etching adhesive system (Futurabond DC; VOCO GmbH, Cuxhaven, Germany) was used, and the glass fiber posts were cemented with dual-cure epoxy-based luting agent (Bifix QM, VOCO GmbH). All roots were sectioned transversely, and the push-out test was performed. Failure mode analysis was also evaluated. RESULTS Bond strength decreased significantly after the use of 2.5% NaOCl in all root thirds (P < .05). CHX showed no difference in the mean bond strength value compared with saline solution (P > .05). The supplementary dentin pretreatment using the Nd:YAG laser or ultrasound did not improve the bond strength values for both NaOCl and CHX (P > .05). Moreover, the apical third exhibited the lowest mean bond strength values (P < .05). Analysis indicated that the predominant failure mode was the mixed type. CONCLUSIONS Regardless of the irrigant used, the supplementary dentin pretreatment with ultrasound or laser irradiation showed no improvement in bond strength. Also, the use of NaOCl decreased the bond strength of glass fiber posts using a self-etching adhesive system, whereas CHX preserved it.
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Affiliation(s)
- Frederico C Martinho
- Endodontic Division, Department of Restorative Dentistry, São José dos Campos Dental School, State University of São Paulo, São Paulo, Brazil.
| | - Claudio Antonio Talge Carvalho
- Endodontic Division, Department of Restorative Dentistry, São José dos Campos Dental School, State University of São Paulo, São Paulo, Brazil
| | - Luciane D Oliveira
- Endodontic Division, Department of Restorative Dentistry, São José dos Campos Dental School, State University of São Paulo, São Paulo, Brazil
| | - Ana Júlia Farias de Lacerda
- Endodontic Division, Department of Restorative Dentistry, São José dos Campos Dental School, State University of São Paulo, São Paulo, Brazil
| | - Ana Cláudia Carvalho Xavier
- Endodontic Division, Department of Restorative Dentistry, São José dos Campos Dental School, State University of São Paulo, São Paulo, Brazil
| | - Marina Gullo Augusto
- Endodontic Division, Department of Restorative Dentistry, São José dos Campos Dental School, State University of São Paulo, São Paulo, Brazil
| | - Rayssa Ferreira Zanatta
- Endodontic Division, Department of Restorative Dentistry, São José dos Campos Dental School, State University of São Paulo, São Paulo, Brazil
| | - Cesar Rogerio Pucci
- Endodontic Division, Department of Restorative Dentistry, São José dos Campos Dental School, State University of São Paulo, São Paulo, Brazil
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Tedesco M, Felippe MCS, Felippe WT, Alves AMH, Bortoluzzi EA, Teixeira CS. Adhesive interface and bond strength of endodontic sealers to root canal dentine after immersion in phosphate-buffered saline. Microsc Res Tech 2014; 77:1015-22. [PMID: 25178588 DOI: 10.1002/jemt.22430] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/12/2014] [Accepted: 08/17/2014] [Indexed: 11/07/2022]
Abstract
This study evaluated the bond strength (BS) and the adhesive interface of four endodontic sealers to root canal dentine, before, and after immersion in phosphate buffered saline (PBS) to simulate an in vivo environment. Eighty roots were instrumented using ProTaper rotatory files, under irrigation with 17% EDTA and 1% NaOCl. Posteriorly were divided into four groups (n = 20) according to the sealer used: Endofill, AH Plus, Sealapex, and MTA Fillapex. Each group was divided into two subgroups (n = 10) and stored at 37°C immersed in water for 7 days and in PBS for 60 days. From each subgroup, 1 mm thick sections were obtained. One section of each region (coronal, middle, and apical) was submitted to the push-out test and failures were observed. Twelve sections of each subgroup (four from each region) were evaluated under SEM. Three-way ANOVA evaluation for BS showed significant differences between groups and regions (P < 0.0001), but not between subgroups (P > 0.05). AH Plus had significantly higher BS than the others sealers, regardless of the analyzed subgroup (Tukey's test, P < 0.5). The most common failures were adhesive to dentine and cohesive of the sealer. The SEM evaluation (Kruskal-Wallis, Mann-Whitney) showed homogeneous adhesive interface formed and sealer tags in all groups with significant statistical differences with AH Plus, regardless of PBS immersion. AH Plus was superior to the other sealers for both BS and quality of interface formation. Immersion in PBS did not interfere on BS or adhesive interface of the sealers tested.
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Affiliation(s)
- Maybell Tedesco
- Department of Dentistry, Federal University of Santa Catarina, Florianópolis, Santa Catarina, CEP 88040-900, Brazil
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Dias KC, Soares CJ, Steier L, Versiani MA, Abi Rached-Júnior FJ, Pécora JD, Correa Silva-Sousa YT, de Sousa-Neto MD. Influence of Drying Protocol with Isopropyl Alcohol on the Bond Strength of Resin-based Sealers to the Root Dentin. J Endod 2014; 40:1454-8. [DOI: 10.1016/j.joen.2014.02.021] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/30/2013] [Revised: 02/08/2014] [Accepted: 02/19/2014] [Indexed: 10/25/2022]
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Abstract
Ethylenediaminetetraacetic acid (EDTA) is a chelating agent can bind to metals via four carboxylate and two amine groups. It is a polyamino carboxylic acid and a colorless, water-soluble solid, which is widely used to dissolve lime scale. It is produced as several salts, notably disodium EDTA and calcium disodium EDTA. EDTA reacts with the calcium ions in dentine and forms soluble calcium chelates. A review of the literature and a discussion of the different indications and considerations for its usage are presented.
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Affiliation(s)
- Zahed Mohammadi
- Iranian Center for Endodontic Research (ICER), Research Institute of Dental Sciences, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Sousan Shalavi
- Iranian Center for Endodontic Research (ICER), Research Institute of Dental Sciences, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Hamid Jafarzadeh
- Dental Research Center, Department of Endodontics, Faculty of Dentistry, Mashhad University of Medical Sciences, Mashhad, Iran
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Mutoh N, Satoh T, Watabe H, Tani-Ishii N. Evaluation of the biocompatibility of resin-based root canal sealers in rat periapical tissue. Dent Mater J 2014; 32:413-9. [PMID: 23719002 DOI: 10.4012/dmj.2012-218] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
We evaluated the biocompatibility of resin-based root canal sealers (RCSs) in the periapical tissues of rats. Wistar rats underwent tooth replantation for reproducing the response of periapical tissue with RCSs. The resin-based Epipany SE, AH Plus Jet, the eugenol-based sealer (Canals) and a control group were employed. The upper right first molar was extracted and applied with RCSs on apices, and then the tooth was repositioned. Histological evaluation demonstrated that mild inflammation occurred in the periapical tissue with Epiphany and AH Plus Jet sealers on day 7, whereas Canals induced severe-to-moderate inflammation. The statistical analyses demonstrated that the significant differences were observed between Canals and the other groups on day 7 regarding inflammatory response. On day 14, the lesions induced by all sealers were healed and replaced predominantly by fibrous connective tissue. Our results suggest that Epiphany SE and AH Plus Jet are good biocompatible materials.
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Affiliation(s)
- Noriko Mutoh
- Department of Oral Medicine, Division of Endodontics, Kanagawa Dental University, 82 Inaoka-cho, Yokosuka 238-8580, Japan
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Gonçalves L, Silva-Sousa YTC, Raucci Neto W, Teixeira CS, Sousa-Neto MD, Alfredo E. Effect of different irrigation protocols on the radicular dentin interface and bond strength with a metacrylate-based endodontic sealer. Microsc Res Tech 2014; 77:446-52. [DOI: 10.1002/jemt.22365] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/18/2013] [Revised: 03/18/2014] [Accepted: 03/21/2014] [Indexed: 11/11/2022]
Affiliation(s)
- Lisandro Gonçalves
- School of Dentistry, University of Ribeirão Preto; Ribeirão Preto São Paulo Brazil
| | | | - Walter Raucci Neto
- School of Dentistry, University of Ribeirão Preto; Ribeirão Preto São Paulo Brazil
| | | | | | - Edson Alfredo
- School of Dentistry, University of Ribeirão Preto; Ribeirão Preto São Paulo Brazil
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Topçuoğlu HS, Demirbuga S, Tuncay Ö, Arslan H, Kesim B, Yaşa B. The bond strength of endodontic sealers to root dentine exposed to different gutta-percha solvents. Int Endod J 2014; 47:1100-6. [DOI: 10.1111/iej.12257] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/12/2013] [Accepted: 01/27/2014] [Indexed: 11/27/2022]
Affiliation(s)
- H. S. Topçuoğlu
- Department of Endodontics; Faculty of Dentistry; Erciyes University; Kayseri Turkey
| | - S. Demirbuga
- Department of Restorative Dentistry; Faculty of Dentistry; Erciyes University; Kayseri Turkey
| | - Ö. Tuncay
- Department of Endodontics; Faculty of Dentistry; Erciyes University; Kayseri Turkey
| | - H. Arslan
- Department of Endodontics; Faculty of Dentistry; Katip Çelebi University; Izmir Turkey
| | - B. Kesim
- Department of Endodontics; Faculty of Dentistry; Erciyes University; Kayseri Turkey
| | - B. Yaşa
- Department of Restorative Dentistry; Faculty of Dentistry; Katip Çelebi University; Izmir Turkey
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Vemisetty H, P V R, Reddy S J, D R, Krishna M JN, Sayini R, Yellamanda S J. Comparative Evaluation of Push-out Bond Strength of Three Endodontic Sealers with and without Amoxicillin-An Invitro Study. J Clin Diagn Res 2014; 8:228-31. [PMID: 24596782 DOI: 10.7860/jcdr/2014/7180.3919] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2013] [Accepted: 09/22/2013] [Indexed: 11/24/2022]
Abstract
INTRODUCTION The purpose of this study was to evaluate the sealing ability of three different root canal sealers with and without amoxicillin, using a push-out bond strength test. MATERIAL AND METHODS Sixty single-rooted extracted human teeth were used for this study. Each tooth was instrumented and irrigated with 5.25% Sodium hypochlorite (NaOCl) and 17% EDTA. The teeth were then divided into six test groups: Gutta percha (GP)/AH Plus (Dentsply, Germany), GP/AH Plus with 10% amoxicillin (TEVA Pharmaceuticals Sellersville, PA), GP/Pulp Canal Sealer EWT (Extended Working Time, SybronEndo Orange, CA), GP/Pulp Canal Sealer EWT with amoxicillin, GP/Apexit Plus, GP/Apexit Plus (Vivadent, Tulsa, US) with amoxicillin. After the sealer was set, the entire root was sectioned into 1 mm thick slices. A push-out bond strength test was performed by using a universal testing machine. The Student's t-test was used to compare the sealer bond strength within the specific sealer test groups and within each sealer at apical, middle and coronal root levels. RESULTS There was no significant difference between the groups within each sealer (p>0.05) with or without amoxicillin at the same root level. CONCLUSION This study demonstrated that the addition of 10% by weight of amoxicillin does not significantly (p> 0.05) change the overall push-out bond strength of three endodontic sealers when compared at the apical, middle, and coronal tooth level.
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Affiliation(s)
- Harikumar Vemisetty
- Professor, Kamineni Institute of Dental Sciences (NTRUHS) , Andhra Pradesh, India
| | - Ravichandra P V
- Professor & HOD, Kamineni Institute of Dental Sciences (NTRUHS) , Andhra Pradesh, India
| | - Jayaprada Reddy S
- Professor, Kamineni Institute of Dental Sciences (NTRUHS) , Andhra Pradesh, India
| | - Ramkiran D
- Senior Lecturer, Kamineni Institute of Dental Sciences (NTRUHS) , Andhra Pradesh, India
| | | | - Rajani Sayini
- Senior Lecturer, Kamineni Institute of Dental Sciences (NTRUHS) , Andhra Pradesh, India
| | - Jyothsna Yellamanda S
- Jyothsna, PG Student, Kamineni Institute of Dental Sciences (NTRUHS) , Andhra Pradesh, India
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Ayrancı LB, Köseoğlu M. The Evaluation of the Effects of Different Irrigating Solutions and Laser Systems on Adhesion of Resin-Based Root Canal Sealers. Photomed Laser Surg 2014; 32:152-9. [DOI: 10.1089/pho.2013.3606] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Affiliation(s)
- L. Benan Ayrancı
- Department of Endodontics, Faculty of Dentistry, Ataturk University, Erzurum, Turkey
| | - Mustafa Köseoğlu
- Department of Endodontics, Faculty of Dentistry, Ataturk University, Erzurum, Turkey
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Mandava J, Chang PC, Roopesh B, Faruddin MG, Anupreeta A, Uma C. Comparative evaluation of fracture resistance of root dentin to resin sealers and a MTA sealer: An in vitro study. J Conserv Dent 2014; 17:53-6. [PMID: 24554862 PMCID: PMC3915387 DOI: 10.4103/0972-0707.124140] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/16/2013] [Revised: 09/30/2013] [Accepted: 10/08/2013] [Indexed: 12/02/2022] Open
Abstract
Background: Endodontic obturating materials should form monoblocks, reinforcing the treated teeth against fracture. Aim: To evaluate and compare the effect of two resin sealers and a MTA sealer on the fracture resistance of endodontically treated teeth. Materials and Methods: Fifty single-rooted mandibular premolars, decoronated at cemento-enamel junction, were divided into 5 groups (n = 10 each). Group 1 and group 2 served as negative and positive controls. Cleaning and shaping of root canals was done using ProTaper rotary files and 3% sodium hypochlorite irrigation. Obturation was done using AH plus (Dentsply, Germany) (group 3), MetaSEAL (Parkell, USA) (group 4), MTA Fillapex (Angeles, Brazil) (group 5) sealers and gutta-percha. Teeth were subjected to vertical loading using a universal testing machine and the point at which fracture of the roots occurred was recorded. The data was subjected to statistical analysis using one way analysis of variance (ANOVA) followed by pair-wise comparison using Tukey's Post-hoc test. Results: AH Plus showed better fracture resistance among the sealer groups. Statistically, no significant difference was found between MetaSEAL and Fillapex groups. Conclusion: MTA Fillapex as a root canal sealer was not able to reinforce the tooth against fracture.
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Affiliation(s)
- Jyothi Mandava
- Departments of Conservative Dentistry and Endodontics, GITAM Dental College, Rushikonda, Visakhapatnam, Andhra Pradesh, India
| | - Pin Chen Chang
- Departments of Conservative Dentistry and Endodontics, GITAM Dental College, Rushikonda, Visakhapatnam, Andhra Pradesh, India
| | - B Roopesh
- Departments of Conservative Dentistry and Endodontics, GITAM Dental College, Rushikonda, Visakhapatnam, Andhra Pradesh, India
| | - Md Ghazan Faruddin
- Departments of Conservative Dentistry and Endodontics, GITAM Dental College, Rushikonda, Visakhapatnam, Andhra Pradesh, India
| | - A Anupreeta
- Departments of Conservative Dentistry and Endodontics, GITAM Dental College, Rushikonda, Visakhapatnam, Andhra Pradesh, India
| | - Ch Uma
- Departments of Conservative Dentistry and Endodontics, GITAM Dental College, Rushikonda, Visakhapatnam, Andhra Pradesh, India
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Guiotti FA, Kuga MC, Duarte MAH, Sant'Anna Júnior A, Faria G. Effect of calcium hydroxide dressing on push-out bond strength of endodontic sealers to root canal dentin. Braz Oral Res 2014; 28. [DOI: 10.1590/s1806-83242014.50000002] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
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Effect of Er:YAG and Nd:YAG lasers on the mineral content of root canal dentin. Lasers Med Sci 2013; 30:809-13. [DOI: 10.1007/s10103-013-1438-7] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/22/2013] [Accepted: 09/03/2013] [Indexed: 10/26/2022]
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Topçuoğlu HS, Tuncay Ö, Karataş E, Arslan H, Yeter K. In vitro fracture resistance of roots obturated with epoxy resin-based, mineral trioxide aggregate-based, and bioceramic root canal sealers. J Endod 2013; 39:1630-3. [PMID: 24238462 DOI: 10.1016/j.joen.2013.07.034] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/01/2013] [Revised: 07/24/2013] [Accepted: 07/29/2013] [Indexed: 10/26/2022]
Abstract
INTRODUCTION The aim of this study was to evaluate the fracture resistance of teeth filled with 3 different endodontic sealers. METHODS Seventy-five single-rooted extracted mandibular premolars were decoronated to a length of 13 mm. The teeth were randomly divided into 5 groups (n = 15 for each group). In group 1, the teeth were left unprepared and unfilled (negative control), and in group 2, the teeth were left unobturated (positive control). The rest of the roots were prepared by using the ProTaper System up to a master apical file size of F3: group 3, bioceramic sealer (Endosequence BC sealer) + gutta-percha; group 4, mineral trioxide aggregate-based sealer (Tech Biosealer Endo) + gutta-percha; and group 5, epoxy resin-based sealer (AH Plus Jet) + gutta-percha. All root specimens were stored for 2 weeks at 100% humidity to allow the complete setting of the sealers. Each specimen was then subjected to fracture testing by using a universal testing machine at a crosshead speed of 1.0 mm/min(-1) until the root fractured. The force required to fracture each specimen was recorded, and the data were analyzed statistically. RESULTS The fracture values of groups 3 and 5 were significantly higher than those of group 4 (P < .05). There was no significant difference between groups 3 and 5 (P > .05). CONCLUSIONS In contrast to Tech Biosealer Endo, Endosequence BC and AH Plus Jet sealer increased the force to fracture in root-filled single-rooted premolar teeth.
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Pane ES, Palamara JEA, Messer HH. Critical evaluation of the push-out test for root canal filling materials. J Endod 2013; 39:669-73. [PMID: 23611388 DOI: 10.1016/j.joen.2012.12.032] [Citation(s) in RCA: 78] [Impact Index Per Article: 7.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/09/2012] [Revised: 12/20/2012] [Accepted: 12/30/2012] [Indexed: 10/27/2022]
Abstract
INTRODUCTION The push-out test has been widely used in experimental endodontics but has been criticized on technical grounds particularly because the soft-core material undergoes plastic deformation under load. This study systematically evaluated the technique by comparing push-out strength and load profiles in relation to core material stiffness, canal diameter, punch diameter, sample orientation, and mode of failure. METHODS Straight palatal roots of 90 maxillary molars were obturated with an epoxy resin-based sealer alone (10 roots) or gutta-percha (70) or epoxy resin (10) cores with a thin layer of sealer cement. Roots were embedded in mounting resin vertically or at an angle of 5° or 10° to the long axis of the root. One-millimeter sections were tested using a universal testing machine with a punch diameter corresponding to 50%, 75%, or 90% of the canal diameter. Bond strengths (MPa) were calculated, and data were analyzed using analysis of variance with post hoc Tukey multiple comparisons (P < .05). After push out, core materials and canal walls were examined using scanning electron microscopy. RESULTS Push-out strength was affected by core material stiffness. Angulation up to 10° from vertical had little effect on push-out strength, but load profiles were strongly influenced by orientation. No effect of the punch diameter was observed when the diameter was 90% of the canal diameter, but push-out strength was lower when the punch diameter was 50%-60% of the canal size. CONCLUSIONS Despite limitations, the push-out test may still be suitable for ranking the bonding of root filling materials.
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Affiliation(s)
- Epita S Pane
- Melbourne Dental School, University of Melbourne, Melbourne, Australia
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Das M, Kumar GA, Ramesh S, Garapati S, Sharma D. An in vitro evaluation of microtensile bond strength of resin-based sealer with dentin treated with diode and Nd:YAG laser. J Contemp Dent Pract 2013; 14:183-187. [PMID: 23811643 DOI: 10.5005/jp-journals-10024-1297] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/02/2023]
Abstract
BACKGROUND Smear layer is a negative factor which prevents adhesion of the filling material to the dentinal walls. Recent advances in dental research have incorporated lasers as a potential adjunct in root canal treatment by removing the smear layer before filling the root canal system, enhancing the adhesion of sealers to dentin and improving the sealing ability. AIM To evaluate the microtensile bond strength of AH-Plus resin-based sealer to dentin after treatment with 980 nm diode and 1,064 nm neodymium-doped:yttrium aluminum garnet (Nd:YAG) laser in vitro. MATERIALS AND METHODS Thirty specimens prepared for three groups namely group I (control), group II (980 nm diode-lased specimens) and group III (Nd:YAG-lased specimens). One tooth from each group was observed under scanning electron microscope for evaluation of intracanal root dentin morphology. Remaining specimens were used for making microsections by hard tissue microtome. Specimens for groups II and III were lased with 980 nm diode and 1,064 nm Nd:YAG laser. AH Plus sealer was applied onto specimens and mounted onto Instron universal testing machine for microtensile bond strength testing. Results were subjected to statistical analysis using one-way analysis of variance (ANOVA) and Tukey's test. RESULTS Group III Nd:YAG had maximum mean microtensile bond strength values (11.558 ± 0.869), followed by group II diode (9.073 ± 0.468) and group I control (6.05 ± 0.036). Statistically significant differences were seen among all the groups. SEM analysis shows removal of smear layer in both groups II and III. CONCLUSION Both Nd:YAG and diode laser were more effective than control group in improving the microtensile bond strength of AH Plus sealer to dentin. CLINICAL SIGNIFICANCE Lasers have the potential to increase the adhesiveness of root canal sealer to dentin surface, thereby improving the quality of root canal obturation.
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Affiliation(s)
- Maneesha Das
- Department of Conservative Dentistry and Endodontics, Saraswati-Dhanwantari Dental College and Hospital Parbhani, Maharashtra, India.
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Elsaka S, Elnaghy A. Effect of addition of chitosan to self-etching primer: antibacterial activity and push-out bond strength to radicular dentin. J Biomed Res 2012; 26:288-94. [PMID: 23554762 PMCID: PMC3596746 DOI: 10.7555/jbr.26.20120042] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/19/2012] [Revised: 04/30/2012] [Accepted: 06/20/2012] [Indexed: 11/19/2022] Open
Abstract
The purpose of this study was to evaluate the antibacterial activity of a modified self-etching primer incorporating chitosan and whether this modification affected the bond strength to radicular dentin. A modified self-etching primer was prepared by adding chitosan solutions at 0.03%, 0.06%, 0.12% and 0.25% (W/W) to RealSeal selfe-tching primer. RealSeal primer without chitosan was used as the control. The antibacterial activity of the modified self-etching primer was evaluated using the direct contact test against Enterococcus faecalis. The bonding ability of the RealSeal system to radicular dentin was evaluated using the push-out bond strength test. The modes of failure were examined under a stereomicroscope. Data were analyzed using analysis of variance (ANOVA) and Tukey's test, with a P-value < 0.05 indicating statistical significance. The results showed that the antibacterial properties of the freshly prepared and aged modified self-etching primer incorporating chitosan exhibited potent antibacterial effect against Enterococcus faecalis compared with the unmodified primer. The RealSeal system with the aged modified self-etching primer incorporating chitosan showed no significant differences in the bond strength as compared with the control (P = 0.99). The findings suggest that modified self-etching primer incorporating chitosan is a promising antibacterial primer which does not adversely affect the bond strength of the RealSeal system to radicular dentin.
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Affiliation(s)
- Shaymaa Elsaka
- Department of Dental Biomaterials, Faculty of Dentistry, Mansoura University, Mansoura, PC 35516, Egypt
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