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Marceliano-Alves MF, de Coutinho TMC, Ronquete V, Goulard PAR, do Nascimento LMG, de Almeida Dos Santos A, Lopes RT, Lins RX, da Silva Limoeiro AG, Nascimento WM, Amoroso-Silva PA. Internal morphology of distal roots of mandibular first molars revealed by computed microtomography. AUST ENDOD J 2023; 49 Suppl 1:1-8. [PMID: 36057963 DOI: 10.1111/aej.12682] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/12/2022] [Revised: 08/15/2022] [Accepted: 08/17/2022] [Indexed: 11/27/2022]
Abstract
To evaluate the internal morphology of 100 distal roots of mandibular first molars using micro-CT. Teeth were scanned to characterise: Vertucci type, root length, canal shape, presence and location of accessory canals, and the number of foramina at 4 mm from the apex, presence of root isthmus and the length from the primary canal to the apical foramen. Vertucci type I was found in 57% of cases, followed by V (27%). The most common cross-section 1 mm from the apex was oval (49%) and circular (38%). The average root length was 16.06 mm (16.61-19.02 mm). The mean foramen size was 0.32 and 0.53 mm for the minor and major diameters, respectively. The volume, surface area and SMI were 7.84 mm3 , 68.87 mm2 and 1.52 mm, respectively. Root isthmi were found in 47% of the samples, and the length mean from the primary canal to the apical foramen was 2,03 mm. The internal morphology of the distal roots of mandibular first molars may be complex and shows variations.
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Gomes ILL, Alves FRF, Marceliano-Alves MF, Silveira SB, Sousa JCN, Provenzano JC, Gonçalves LS. Apical transportation using Mtwo or Reciproc retreatment systems in severely curved canals: a micro-computed tomographic study. Clin Oral Investig 2023; 27:1235-1241. [PMID: 36264344 DOI: 10.1007/s00784-022-04751-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/28/2022] [Accepted: 10/06/2022] [Indexed: 11/29/2022]
Abstract
OBJECTIVE To assess apical root canal transportation using Mtwo or Reciproc during retreatment of severely curved canals, using a multi-analytical approach. METHODS Forty mesial canals from mandibular molars (Vertucci type IV) were evaluated before and after endodontic retreatment to compare apical transportation with Mtwo retreatment or Reciproc. The systems were used on the same root but alternating the mesial canals. The analyses were performed by micro-computed tomography. Four evaluations were performed: (a) longitudinal transportation, (b) horizontal transportation, (c) variation in the angle of curvature of the canal, and (d) canal-root width ratio. Horizontal transportation and canal-root width ratio were evaluated in 1-, 3-, and 5-mm levels. RESULTS Longitudinal transportation occurred in all samples, with a mean of 0.13 mm for Mtwo and 0.17 mm for Reciproc. Horizontal transportation increased as distant from the apex was the evaluated level, in mean. However, the transport was not observed in all samples. The mean angle of curvature was 4.16 for Mtwo and 3.03 for Reciproc. Canal-root width decreased as distant from the apex was the evaluated level. No significant differences were observed considering all tested variables, independently of the retreatment system or evaluated level (p > 0.05). CONCLUSION Mtwo retreatment and Reciproc presented similar apical transportation (horizontal or vertical). CLINICAL RELEVANCE Both Mtwo retreatment and Reciproc systems could be considered safe regarding apical transportation.
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Affiliation(s)
- Isabelle L L Gomes
- Postgraduate Program in Dentistry, Estácio de Sá University, Rio de Janeiro, Brazil
| | - Flávio R F Alves
- Faculty of Dentistry, Department of Endodontics, Iguaçu University (UNIG), Av. Abílio Augusto Távora, 2134 - Luz, Nova Iguaçu, RJ, 26260-045, Brazil.,Postgraduate Program in Dentistry, University of Grande Rio (UNIGRANRIO), Rio de Janeiro, RJ, Brazil
| | - Marília F Marceliano-Alves
- Faculty of Dentistry, Department of Endodontics, Iguaçu University (UNIG), Av. Abílio Augusto Távora, 2134 - Luz, Nova Iguaçu, RJ, 26260-045, Brazil
| | - Stephanie B Silveira
- Postgraduate Program in Dentistry, Estácio de Sá University, Rio de Janeiro, Brazil
| | - Júlio Cézar N Sousa
- Faculty of Dentistry, Department of Endodontics, University Center of João Pessoa, Paraíba, Brazil
| | - José Claudio Provenzano
- Faculty of Dentistry, Department of Endodontics, Iguaçu University (UNIG), Av. Abílio Augusto Távora, 2134 - Luz, Nova Iguaçu, RJ, 26260-045, Brazil. .,Postgraduate Program in Dentistry, University of Grande Rio (UNIGRANRIO), Rio de Janeiro, RJ, Brazil.
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Guedes IG, Rodrigues RCV, Marceliano-Alves MF, Alves FRF, Rôças IN, Júnior JFS. Shaping ability of new reciprocating or rotary instruments with two cross-sectional designs: an ex vivo study. Int Endod J 2022; 55:1385-1393. [PMID: 36121392 DOI: 10.1111/iej.13834] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/13/2022] [Revised: 09/14/2022] [Accepted: 09/15/2022] [Indexed: 11/28/2022]
Abstract
AIM This study compared the shaping ability of four new reciprocating and rotary nickel-titanium instruments, with triangular or S-shaped cross-section, in the mesial canals of mandibular molars using micro-computed tomographic (micro-CT) evaluation. METHODOLOGY Twenty-four extracted mandibular molars with Vertucci's class IV configuration in the mesial root were selected for this study. The teeth were matched in fours according to anatomic similarities as revealed by micro-CT and then distributed into four groups of 12 mesial canals each according to the instrumentation technique: Reciproc Blue, R-motion, VDW.Rotate, and RaCe EVO. The final apical size of instrumentation was 30/.04 for 3 systems and 25/08 for the Reciproc Blue instrument. Micro-CT scans were taken before and after preparation to evaluate the canal volume, area and unprepared surface areas, as well as the centering ability, and the canal:root width ratio. RESULTS Preparation with all systems significantly increased the volume and area of the canals (P < .05). There were no significant differences between groups regarding the amount of unprepared areas in both the apical and full canal lengths (P > .05). Variation in the centre of gravity showed no significant difference between groups either (P > .05). The canal:root width ratio at levels 0 and 4 mm apically to the coronal canal opening was significantly increased by all systems (P < .01), with no significant differences between groups (P > .05). The canal width never exceeded 40% of the root width. CONCLUSIONS Reciprocating or rotary instruments, with a triangular or an S-shaped cross-section, performed equally in shaping Vertucci's class IV mesial canals of mandibular molars.
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Affiliation(s)
- Isabela G Guedes
- Postgraduate Program in Dentistry, University of Grande Rio (UNIGRANRIO), Rio de Janeiro, RJ, Brazil
| | - Renata C V Rodrigues
- Postgraduate Program in Dentistry, University of Grande Rio (UNIGRANRIO), Rio de Janeiro, RJ, Brazil.,Faculty of Dentistry, Veiga de Almeida University, Rio de Janeiro, RJ, Brazil
| | | | - Flávio R F Alves
- Postgraduate Program in Dentistry, University of Grande Rio (UNIGRANRIO), Rio de Janeiro, RJ, Brazil.,Department of Dental Research, Faculty of Dentistry, Iguaçu University (UNIG), Nova Iguaçu, RJ, Brazil
| | - Isabela N Rôças
- Postgraduate Program in Dentistry, University of Grande Rio (UNIGRANRIO), Rio de Janeiro, RJ, Brazil.,Department of Dental Research, Faculty of Dentistry, Iguaçu University (UNIG), Nova Iguaçu, RJ, Brazil
| | - José F S Júnior
- Postgraduate Program in Dentistry, University of Grande Rio (UNIGRANRIO), Rio de Janeiro, RJ, Brazil.,Department of Dental Research, Faculty of Dentistry, Iguaçu University (UNIG), Nova Iguaçu, RJ, Brazil
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Pacheco-Yanes J, Gazzaneo I, Campello AF, Marceliano-Alves MF, Estrela C, Bueno MR, Lopes RT, Rôças IN, Alves FRF, Siqueira JF. Planned Apical Preparation Using Cone-Beam Computed Tomographic Measures: A Micro-Computed Tomographic Proof of Concept in Human Cadavers. J Endod 2021; 48:280-286. [PMID: 34871632 DOI: 10.1016/j.joen.2021.11.016] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/25/2021] [Revised: 10/12/2021] [Accepted: 11/29/2021] [Indexed: 10/19/2022]
Abstract
INTRODUCTION This study assessed the amount of unprepared surface areas at the apical 4-mm segment of the root canal after a planned preparation based on cone-beam computed tomography (CBCT) measurements. METHODS Eighteen posterior mandible segments were obtained from cadavers and scanned using CBCT and micro-computed tomographic (micro-CT) imaging. CBCT images were used to measure the largest initial canal diameter from 29 root canals of premolars at 1, 2, 3, and 4 mm short of the apical foramen. Each measurement was used to select a master apical instrument with size/taper that was 1 diameter larger to prepare the apical 4 mm of each particular root canal. A post-preparation micro-CT scan was obtained, and the unprepared canal areas were calculated. RESULTS A very high amount of surface areas over the apical 4 mm of the root canal was included in the final preparation (mean >90%). The unprepared areas ranged from as low as 3.7% to a maximum of 14.6% (mean and median, 9.2% and 9.1%, respectively). CONCLUSIONS The proposed planned apical root canal preparation resulted in optimized root canal shaping with a substantial amount of prepared surface areas. The protocol used also resulted in a conservative canal enlargement using final instruments that were 1 size larger than the initial largest canal diameter.
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Affiliation(s)
- Juan Pacheco-Yanes
- Faculty of Dentistry, Department of Dental Research, Iguaçu University (UNIG), Nova Iguaçu, Rio de Janeiro, Brazil
| | - Isbelia Gazzaneo
- Faculty of Dentistry, Department of Dental Research, Iguaçu University (UNIG), Nova Iguaçu, Rio de Janeiro, Brazil
| | - Andrea F Campello
- Faculty of Dentistry, Department of Dental Research, Iguaçu University (UNIG), Nova Iguaçu, Rio de Janeiro, Brazil
| | - Marília F Marceliano-Alves
- Faculty of Dentistry, Department of Dental Research, Iguaçu University (UNIG), Nova Iguaçu, Rio de Janeiro, Brazil
| | - Carlos Estrela
- School of Dentistry, Department of Endodontics, Federal University of Goiás, Goiânia, Brazil
| | | | - Ricardo T Lopes
- Department of Nuclear Energy, Rio de Janeiro Federal University, Rio de Janeiro, Rio de Janeiro, Brazil
| | - Isabela N Rôças
- Faculty of Dentistry, Department of Dental Research, Iguaçu University (UNIG), Nova Iguaçu, Rio de Janeiro, Brazil; Postgraduate Program in Dentistry, University of Grande Rio (UNIGRANRIO), Rio de Janeiro, Rio de Janeiro, Brazil
| | - Flávio R F Alves
- Faculty of Dentistry, Department of Dental Research, Iguaçu University (UNIG), Nova Iguaçu, Rio de Janeiro, Brazil; Postgraduate Program in Dentistry, University of Grande Rio (UNIGRANRIO), Rio de Janeiro, Rio de Janeiro, Brazil.
| | - José F Siqueira
- Faculty of Dentistry, Department of Dental Research, Iguaçu University (UNIG), Nova Iguaçu, Rio de Janeiro, Brazil; Postgraduate Program in Dentistry, University of Grande Rio (UNIGRANRIO), Rio de Janeiro, Rio de Janeiro, Brazil
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Almeida JAD, Gellen PVB, Hiramatsu DM, Santos MAD, Bitencourt L, Marceliano EFV, Galhardi MPW, Marceliano-Alves MF, Marques EF. Cavernous Hemangioma in the Orbital Cavity: Case Report. Eur J Dent 2021; 16:230-233. [PMID: 34674195 PMCID: PMC8890910 DOI: 10.1055/s-0041-1732948] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022] Open
Abstract
Cavernous hemangiomas are benign malformations of vascular origin, usually well circumscribed and slow to grow. These lesions can be asymptomatic, being discovered unintentionally in imaging exams or symptomatic, indicated mainly by the presence of proptosis, diplopia, and visual disturbances by optic nerve compression. The complementary exams involve computed tomography associated with contrast, color Doppler, magnetic resonance, and angiography. Treatment can be conservative or surgical depending on the case, and the open therapy usually involves lateral, supraorbital, transconjunctival, transantral, pterional, transnasal, and extradural endoscopic orbitotomy. The present study aimed to report a recurrent case of hemangioma in the orbital cavity signaled by ocular proptosis, hyperemia, and ocular pain.The lesion was achieved through the Weber-Ferguson access with zygomatic osteotomy and preservation of the infraorbital nerve. The excision of the lesion was performed, and the previously displaced fragments were fixed with 1.5 mm mini plates. The patient has a chance of progressing with visual impairment due to considerable manipulation of the optic nerve and is being followed up.The reported case showed a successful diagnosis and therapeutic conduct, remaining now in the evolution and follow-up scenario.
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Affiliation(s)
- José Afonso de Almeida
- Department of Endodontics, President Antonio Carlos University - Porto Nacional - ITPAC - Porto/FAPAC, Palmas, Brazil
| | - Paula Vitória Bido Gellen
- Department of Endodontics, President Antonio Carlos University - Porto Nacional - ITPAC - Porto/FAPAC, Palmas, Brazil
| | | | - Mariana Araújo Dos Santos
- Department of Endodontics, President Antonio Carlos University - Porto Nacional - ITPAC - Porto/FAPAC, Palmas, Brazil
| | - Larissa Bitencourt
- Department of Endodontics, President Antonio Carlos University - Porto Nacional - ITPAC - Porto/FAPAC, Palmas, Brazil
| | | | | | | | - Eduardo Fernandes Marques
- Department of Endodontics, President Antonio Carlos University - Porto Nacional - ITPAC - Porto/FAPAC, Palmas, Brazil
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Penha da Silva PJ, Marceliano-Alves MF, Provenzano JC, Dellazari RLA, Gonçalves LS, Alves FRF. Quality of Root Canal Filling Using a Bioceramic Sealer in Oval Canals: A Three-Dimensional Analysis. Eur J Dent 2021; 15:475-480. [PMID: 33535249 PMCID: PMC8382469 DOI: 10.1055/s-0040-1722095] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023] Open
Abstract
Objectives
The oval canals may be associated with inadequate debridement, which can affect the quality of the root canal filling, thus the treatment outcome. The aim of the present work was to compare the quality of oval canals fillings using EndoSequence BC sealer with the single-cone technique or cold lateral compaction.
Materials and Methods
Thirty-eight human single-rooted premolars with oval canals were instrumented to 1 mm from the apical foramen with hand nickel–titanium files, followed by circumferential filing with Hedstrom files. Teeth were paired into two groups based on their micro-computed tomography (CT) morphological parameters. Both groups were filled using EndoSequence BC sealer. The first used a single cone and the other with the cold lateral compaction technique. The voids volume was evaluated by micro-CT and the percentage was calculated for the total length and for the apical 5 mm of each canal. The Mann–Whitney U test was used to assess whether the surface area and obturation length differed significantly between the groups and to compare the percentage of voids for each technique.
Results
Both techniques resulted in less than 16% voids, with no statistically significant difference between them for the total canal length and for the apical 5 mm (
p
> 0.05).
Conclusions
The quality of the obturation performed with the single-cone technique was similar to that achieved with lateral compaction using EndoSequence BC sealer in oval canals.
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Affiliation(s)
| | | | | | | | | | - Flávio R F Alves
- Department of Endodontics, Iguaçu University, Nova Iguaçu, Brazil
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7
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Campello AF, Marceliano-Alves MF, Provenzano JC, Loyola SC, Siqueira JF, Machado AG, Machado AL, Lopes RT, Paiva MM, Alves FRF. Accuracy of Microcomputed Tomography in Detecting Dentinal Cracks: A Correlative Study with Scanning Electron and Operative Microscopy. Scanning 2021; 2021:5571123. [PMID: 34104287 PMCID: PMC8143888 DOI: 10.1155/2021/5571123] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/12/2021] [Accepted: 05/03/2021] [Indexed: 05/13/2023]
Abstract
The aim of the study was to evaluate the accuracy of microcomputed tomography (mCT) to detect dentinal cracks when compared with scanning electron microscopy (SEM) and operating microscopy (OM). Different conditions of pixel size (10 or 17 μm), sample moisture (dry/moist), and transillumination (with/without) were evaluated. Additionally, the influence of the dentinal defect width on its detection was analyzed. The root canals of human mandibular incisors were prepared with the Reciproc R40 instrument (VDW, Munich, Germany). The roots were sectioned 5 and 10 mm from the apex, and mCT scans of middle and apical segments were performed at two pixel sizes: 10 μm and 17 μm, under dry and moist conditions (groups: 10dry, 10moist, 17dry, and 17moist). The operating microscope was used with and without transillumination (groups: OMTrans and OM). Findings showed that accuracy was moderate for the 10dry, 10moist, and OMTrans groups, poor for OM and very poor for 17dry and 17moist. The thickness of the dentin crack significantly influenced its detection by mCT using the resolution of 10 μm in both dry and wet conditions (P = .002), 17 μm in the dry condition (P = .002), and by the operating microscope using transillumination (P = .009). Some cracks visualized in SEM were not detected by mCT and an operating microscope. Not only the mCT resolution but also the sample moisture condition and the dentinal crack width can significantly influence its detection.
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Affiliation(s)
| | | | | | - Simone C. Loyola
- Faculty of Dentistry, Iguaçu University, Nova Iguaçu, RJ, Brazil
| | - José F. Siqueira
- Faculty of Dentistry, Iguaçu University, Nova Iguaçu, RJ, Brazil
- Department of Endodontics, Grande Rio University (UNIGRANRIO), Duque de Caxias, RJ, Brazil
| | - André G. Machado
- Faculty of Dentistry, Iguaçu University, Nova Iguaçu, RJ, Brazil
| | - André L. Machado
- Faculty of Dentistry, Iguaçu University, Nova Iguaçu, RJ, Brazil
| | - Ricardo T. Lopes
- Department of Nuclear Energy, Rio de Janeiro Federal University, Rio de Janeiro, RJ, Brazil
| | | | - Flávio R. F. Alves
- Faculty of Dentistry, Iguaçu University, Nova Iguaçu, RJ, Brazil
- Department of Endodontics, Grande Rio University (UNIGRANRIO), Duque de Caxias, RJ, Brazil
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8
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Gomes ILL, Alves FRF, Marceliano-Alves MF, Silveira SB, Provenzano JC, Gonçalves LS. Canal transportation using Mani GPR or HyFlex NT during the retreatment of curved root canals: A micro-computed tomographic study. AUST ENDOD J 2020; 47:73-80. [PMID: 33247880 DOI: 10.1111/aej.12470] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/14/2020] [Revised: 09/29/2020] [Accepted: 11/08/2020] [Indexed: 11/29/2022]
Abstract
This study assessed the apical transportation using Mani GPR or HyFlex NT during the retreatment of curved root canals. Thirty-eight roots were analysed using micro-CT for the comparison of apical transportation produced by two retreatment systems. Longitudinal transportation, horizontal transportation, variation in the canal angle of curvature and variation in the canal/root width ratio were analysed. Longitudinal transportation was frequently observed, regardless of the system used. The canals retreated with Mani GPR showed a significantly higher horizontal transportation at 1 mm from the root apex (P < 0.01) and greater variation of the canal curvature angle (P < 0.01). The canal/root width ratio was similar between groups (P > 0.05). In conclusion, longitudinal transportation occurred more frequently in the mesial canal walls. Mani GPR showed greater horizontal transportation at 1 mm short of the apex, and higher variation of the canal curvature angle compared with HyFlex NT.
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Affiliation(s)
| | - Flávio Rodrigues Ferreira Alves
- Faculty of Dentistry, Iguaçu University, Nova Iguaçu, Brazil.,Postgraduate Program in Dentistry, Grande Rio University (UNIGRANRIO), Rio de Janeiro, Brazil
| | | | - Stephanie B Silveira
- Postgraduate Program in Dentistry, Estácio de Sá University, Rio de Janeiro, Brazil
| | - José Claudio Provenzano
- Postgraduate Program in Dentistry, Estácio de Sá University, Rio de Janeiro, Brazil.,Faculty of Dentistry, Iguaçu University, Nova Iguaçu, Brazil
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9
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Tavares SJO, Gomes CC, Marceliano-Alves MF, Guimarães LC, Provenzano JC, Amoroso-Silva P, Machado AG, Siqueira JF, Alves FRF. Supplementing filling material removal with XP-Endo Finisher R or R1-Clearsonic ultrasonic insert during retreatment of oval canals from contralateral teeth. AUST ENDOD J 2020; 47:188-194. [PMID: 33030235 DOI: 10.1111/aej.12451] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/18/2020] [Revised: 08/13/2020] [Accepted: 09/15/2020] [Indexed: 11/28/2022]
Abstract
This study compared the efficacy of XP-Endo Finisher R and R1-Clearsonic insert in removing filling material remnants from oval canals. Twelve pairs of contralateral premolars were treated and subsequently retreated with Reciproc 50. A supplementary procedure with XP-Endo Finisher R or R1-Clearsonic was performed. Micro-computed tomography was used to quantify the filling material volume in the full canal and apical segment lengths. Intragroup analyses revealed significant reduction of filling material after both procedures, not only in the full canal but also in the apical segment (P < 0.05). The amount of filling material removed with XP-Endo Finisher R and R1-Clearsonic was 47.9% and 52.2% in the apical segment (P > 0.05), and 82.1% and 64.6% in the full canal (P < 0.05). None of the instruments was effective in completely removing the filling material from the apical canal, but better results were obtained with XP-Endo Finisher R in the total canal length.
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Affiliation(s)
- Sandro J O Tavares
- Faculty of Dentistry, Department of Endodontics, Federal Fluminense University, Nova Friburgo, RJ, Brazil
| | - Cinthya C Gomes
- Faculty of Dentistry, Department of Endodontics, Federal Fluminense University, Nova Friburgo, RJ, Brazil
| | | | - Ludmila C Guimarães
- Faculty of Dentistry, Department of Endodontics, Federal Fluminense University, Nova Friburgo, RJ, Brazil
| | - José C Provenzano
- Faculty of Dentistry, Department of Endodontics, Iguaçu University (UNIG), Nova Iguaçu, RJ, Brazil
| | - Pablo Amoroso-Silva
- PostGraduate Program in Dentistry, University of Grande Rio (UNIGRANRIO), Duque de Caxias, RJ, Brazil
| | - André G Machado
- Faculty of Dentistry, Department of Endodontics, Iguaçu University (UNIG), Nova Iguaçu, RJ, Brazil
| | - José F Siqueira
- Faculty of Dentistry, Department of Endodontics, Iguaçu University (UNIG), Nova Iguaçu, RJ, Brazil.,PostGraduate Program in Dentistry, University of Grande Rio (UNIGRANRIO), Duque de Caxias, RJ, Brazil
| | - Flávio R F Alves
- Faculty of Dentistry, Department of Endodontics, Iguaçu University (UNIG), Nova Iguaçu, RJ, Brazil.,PostGraduate Program in Dentistry, University of Grande Rio (UNIGRANRIO), Duque de Caxias, RJ, Brazil
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10
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Alves FRF, Marceliano-Alves MF, Souza ACD, Campello AF. Mucosal Fenestration After 2% Chlorhexidine Extrusion Used in Substitution of Sodium Hypochlorite: A Case Report. Eur J Dent 2020; 14:511-516. [PMID: 32818998 PMCID: PMC7440936 DOI: 10.1055/s-0040-1714173] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
This report describes a case of sodium hypochlorite (NaOCl) and chlorhexidine (CHX) extrusion through the apical foramen, causing acute pain, swelling and mucosal fenestration. A 62-year-old woman was referred for endodontic treatment in the first left maxillary premolar with a diagnosis of necrotic pulp. After the root canal irrigation with 2.5% NaOCl, the patient felt a burning sensation and pain. Discrete swelling and redness were noted in the patient’s face at the end of the session. Antibiotic and corticosteroids were prescribed. In the next appointment, 2% CHX was used, but another episode of extrusion occurred, with a sudden acute pain and intense swelling within a few minutes after the injection. After 2 weeks, the patient exhibited a left-side facial swelling extending anterior and inferior to the left zygomatic arch and superior to the body of the mandible. Oral antibiotic and anti-inflammatory drugs were administered. After 10 days, the swelling had completely diminished, but a mucosal fenestration and tooth mobility were verified. A cone beam CT was requested and showed a periapical lesion involving both buccal and palatal roots. After a prosthetic evaluation, the tooth extraction was indicated. One week after tooth removal, the mucosa was completely healed.
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Affiliation(s)
- Flávio Rodrigues Ferreira Alves
- Department of Endodontics, Iguaçu University, Nova Iguaçu, Rio de Janeiro, Brazil.,Post Graduation Program, Grande Rio University (UNIGRANRIO), Duque de Caxias, Rio de Janeiro, Brasil
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11
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Lima CO, Magalhães LT, Marceliano-Alves MF, de Oliveira PY, Lacerda MF. Internal Lower Incisor Morphology revealed by Computerized Microtomography. Acta Odontol Latinoam 2020; 33:33-37. [PMID: 32621597] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Subscribe] [Scholar Register] [Received: 02/01/2019] [Accepted: 04/01/2020] [Indexed: 06/11/2023]
Abstract
This study evaluated the internal morphology of lower incisors using computerized microtomography (micro-CT) images. Eighty-nine lower incisors were scanned by micro-CT and reconstructed with NRecon software. 2D parameters (perimeter, root length, circularity and canal diameter) and 3D parameters (volume, surface area and structure model index) were evaluated with CTAn and CTVol software. The results are presented descriptively. It was found that 89.9% of the canals had a single main root canal (type I), followed by type II (6.7%) and III (3.4%), while 5.6% of the specimens presented lateral canals and 1.1% had an apical delta. Mean volume and surface area were 31.80mm³ and 90.58mm², respectively. The most prevalent shape of the root canal at CEJ level was circular (41.6%) and 1mm from the apex, 73% of the samples were classified as oval. Lower incisors with internal anatomical variations may offer a high degree of technical complexity and may result in treatment failure.
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Affiliation(s)
- Carolina O Lima
- Universidade Federal do Rio de Janeiro, Departmento de Endodontia, Rio de Janeiro, Brasil
| | - Lorena Ta Magalhães
- Universidade Federal de Juiz de Fora, Departmento de Clínica Odontológica, Minas Gerais, Brasil
| | | | - Patrícia Y de Oliveira
- Universidade Federal de Minas Gerais, Departmento de Endodontia, Belo Horizonte, Minas Gerais, Brasil.
| | - Mariane Fls Lacerda
- Universidade Federal de Juiz de Fora, Departmento de Clínica Odontológica, Minas Gerais, Brasil
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Almeida BM, Provenzano JC, Marceliano-Alves MF, Rôças IN, Siqueira JF. Matching the Dimensions of Currently Available Instruments with the Apical Diameters of Mandibular Molar Mesial Root Canals Obtained by Micro–computed Tomography. J Endod 2019; 45:756-760. [DOI: 10.1016/j.joen.2019.03.001] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/23/2019] [Revised: 02/18/2019] [Accepted: 03/01/2019] [Indexed: 11/24/2022]
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Campello AF, Marceliano-Alves MF, Siqueira JF, Marques FV, Guedes FR, Lopes RT, Alvarenga FO, Alves FR. Determination of the Initial Apical Canal Diameter by the First File to Bind or Cone-beam Computed Tomographic Measurements Using Micro-computed Tomography as the Gold Standard: An Ex Vivo Study in Human Cadavers. J Endod 2019; 45:619-622. [DOI: 10.1016/j.joen.2019.01.020] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/28/2018] [Revised: 01/30/2019] [Accepted: 01/31/2019] [Indexed: 11/24/2022]
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Campello AF, Almeida BM, Franzoni MA, Alves FRF, Marceliano-Alves MF, Rôças IN, Siqueira JF, Provenzano JC. Influence of solvent and a supplementary step with a finishing instrument on filling material removal from canals connected by an isthmus. Int Endod J 2018; 52:716-724. [PMID: 30481389 DOI: 10.1111/iej.13047] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/24/2018] [Accepted: 11/21/2018] [Indexed: 11/27/2022]
Abstract
AIM To evaluate the effectiveness of a solvent (eucalyptol) in improving filling material removal from canals connected by isthmuses, and the additional cleaning effect of a finishing instrument. METHODOLOGY The mesial canals from 32 mandibular molars (Vertucci's type II morphology) were instrumented and filled with the single-cone technique using Reciproc R25 gutta-percha points (VDW, Munich, Germany) combined with Sealer 26 (Dentsply, Petrópolis, RJ, Brazil). Each root was then subjected to retreatment using the Mtwo instrument system (VDW), with or without a solvent (n = 16 per group). The volume of filling material in the canals was assessed by micro-computed tomographic (micro-CT) scans taken before and after retreatment. Canals with remnants of filling material received a supplementary procedure with the XP-endo Finisher R instrument (FKG Dentaire, La Chaux-de-Fonds, Switzerland), with or without eucalyptol, and another micro-CT scan was taken. All retreatment procedures were performed inside a cabinet under a controlled temperature (37 °C). Filling material removal was evaluated in the 5-mm apical canal system for the canal+isthmus space or the isthmus alone. Statistical analyses were performed to compare the removal of filling material with and without eucalyptol, and after a supplementary approach with XP-endo Finisher R. The level of significance was set at 5% for all statistical tests (P < 0.05). RESULTS The amount of filling material removed from the canal+isthmus with Mtwo instruments was 83.2% when no solvent was used and 83.8% using the solvent (P > 0.05). When the isthmus area was evaluated separately, most specimens were associated with a reduction in the filling material, with no significant difference between the groups with or without using a solvent (P > 0.05). The supplementary step with XP-endo Finisher R significantly improved removal of filling material from both canal and isthmus area (P < 0.05), regardless of the use of a solvent (P > 0.05). CONCLUSION The use of eucalyptol did not improve filling material removal from Vertucci's type II molar mesial canals and isthmuses. XP-endo Finisher R significantly enhanced removal of filling material from the canals and isthmuses.
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Affiliation(s)
- A F Campello
- Department of Endodontics, Faculty of Dentistry, Estácio de Sá University, Rio de Janeiro, RJ, Brazil
| | - B M Almeida
- Department of Endodontics, Faculty of Dentistry, Estácio de Sá University, Rio de Janeiro, RJ, Brazil
| | - M A Franzoni
- Department of Endodontics, Faculty of Dentistry, Estácio de Sá University, Rio de Janeiro, RJ, Brazil
| | - F R F Alves
- Department of Endodontics, Faculty of Dentistry, Estácio de Sá University, Rio de Janeiro, RJ, Brazil
| | - M F Marceliano-Alves
- Department of Endodontics, Faculty of Dentistry, Estácio de Sá University, Rio de Janeiro, RJ, Brazil
| | - I N Rôças
- Department of Endodontics, Faculty of Dentistry, Estácio de Sá University, Rio de Janeiro, RJ, Brazil
| | - J F Siqueira
- Department of Endodontics, Faculty of Dentistry, Estácio de Sá University, Rio de Janeiro, RJ, Brazil
| | - J C Provenzano
- Department of Endodontics, Faculty of Dentistry, Estácio de Sá University, Rio de Janeiro, RJ, Brazil
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Alves FR, Paiva PL, Marceliano-Alves MF, Cabreira LJ, Lima KC, Siqueira JF, Rôças IN, Provenzano JC. Bacteria and Hard Tissue Debris Extrusion and Intracanal Bacterial Reduction Promoted by XP-endo Shaper and Reciproc Instruments. J Endod 2018; 44:1173-1178. [DOI: 10.1016/j.joen.2018.04.007] [Citation(s) in RCA: 26] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/28/2017] [Revised: 03/29/2018] [Accepted: 04/04/2018] [Indexed: 01/29/2023]
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Marceliano-Alves MF, Lima CO, Bastos LGDPMN, Bruno AMV, Vidaurre F, Coutinho TM, Fidel SR, Lopes RT. Mandibular mesial root canal morphology using micro-computed tomography in a Brazilian population. AUST ENDOD J 2018; 45:51-56. [PMID: 29611889 DOI: 10.1111/aej.12265] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 02/24/2018] [Indexed: 12/15/2022]
Abstract
To assess the root canal system morphology of mandibular molars by means of micro-computed tomography, one hundred and four mandibular first molars were investigated and the following were evaluated: Vertucci's classification, the presence of lateral canals and the number of apical foramina. Mesial root canal surface area and volume were obtained by the CTAn and CTvol software. The type of root canal isthmi was classified applying the Hsu & Kim and Fan criteria. The most frequent root canal configuration was Vertucci type IV (46.2%). Lateral canals were observed in all root canal thirds and the average number of apical foramina was 3.15 ± 1.77. Regarding the presence of isthmus, Types I and II were the most prevalent, according to Hsu & Kim and Fan et al. criteria, respectively. Mesial root canals of mandibular molars showed high morphology variability.
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Affiliation(s)
| | | | | | | | - Fernanda Vidaurre
- Department of Endodontics, Rio de Janeiro Federal University, Rio de Janeiro, Brazil
| | | | - Sandra Rivera Fidel
- Department of Endodontics, State University of Rio de Janeiro, Rio de Janeiro, Brazil
| | - Ricardo Tadeu Lopes
- Metallurgical and Materials Engineering, Rio de Janeiro Federal University, Rio de Janeiro, RJ, Brazil
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Silveira SB, Alves FR, Marceliano-Alves MF, Sousa JCN, Vieira VT, Siqueira JF, Lopes HP, Provenzano JC. Removal of Root Canal Fillings in Curved Canals Using Either Mani GPR or HyFlex NT Followed by Passive Ultrasonic Irrigation. J Endod 2018; 44:299-303.e1. [PMID: 29254819 DOI: 10.1016/j.joen.2017.09.012] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/06/2017] [Revised: 09/12/2017] [Accepted: 09/21/2017] [Indexed: 10/18/2022]
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Lacerda MF, Marceliano-Alves MF, Pérez AR, Provenzano JC, Neves MA, Pires FR, Gonçalves LS, Rôças IN, Siqueira JF. Cleaning and Shaping Oval Canals with 3 Instrumentation Systems: A Correlative Micro–computed Tomographic and Histologic Study. J Endod 2017; 43:1878-1884. [DOI: 10.1016/j.joen.2017.06.032] [Citation(s) in RCA: 74] [Impact Index Per Article: 10.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/23/2017] [Revised: 06/08/2017] [Accepted: 06/26/2017] [Indexed: 11/29/2022]
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Guimarães LS, Gomes CC, Marceliano-Alves MF, Cunha RS, Provenzano JC, Siqueira JF. Preparation of Oval-shaped Canals with TRUShape and Reciproc Systems: A Micro–Computed Tomography Study Using Contralateral Premolars. J Endod 2017; 43:1018-1022. [DOI: 10.1016/j.joen.2017.01.028] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/27/2016] [Revised: 01/14/2017] [Accepted: 01/17/2017] [Indexed: 11/26/2022]
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Lenzi R, Marceliano-Alves MF, Alves F, Pires FR, Fidel S. Pre-eruptive intracoronal resorption in a third upper molar: clinical, tomographic and histological analysis. Aust Dent J 2017; 62:223-227. [PMID: 27471145 DOI: 10.1111/adj.12444] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 07/26/2016] [Indexed: 11/29/2022]
Abstract
Radiolucent or hypodense lesions in the crown of unerupted teeth may be due to pre-eruptive intracoronal resorption. Clinicians must be aware of this risk so that they can diagnose and appropriately treat this condition. The purpose of this study is to present a well-documented clinical case of pre-eruptive intracoronal resorption in an impacted third upper left molar of a 63 year old female patient. This was an unexpected finding, which occurred after cone-beam computed tomography was used to investigate the first upper left molar, which had an acute periradicular abscess. A multidisciplinary team followed up the case to describe clinical, radiographic and histological findings. The available treatment options were discussed, and the tooth extraction was the option chosen. Previous case studies describing such resorption in third upper molars have not been reported. This case shows that all permanent teeth in a pre-eruptive stage must be analysed radiographically to detect early pre-eruptive intracoronal resorption.
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Affiliation(s)
- R Lenzi
- Proclin Department, School of Dentistry, Rio de Janeiro State University, Rio de Janeiro, Brazil
| | - M F Marceliano-Alves
- Proclin Department, School of Dentistry, Rio de Janeiro State University, Rio de Janeiro, Brazil
| | - Frf Alves
- Department of Endodontics, Faculty of Dentistry, Estácio de Sá University, Rio de Janeiro, Brazil
| | - F R Pires
- Department of Endodontics, Faculty of Dentistry, Estácio de Sá University, Rio de Janeiro, Brazil
| | - S Fidel
- Proclin Department, School of Dentistry, Rio de Janeiro State University, Rio de Janeiro, Brazil
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Alves FR, Marceliano-Alves MF, Sousa JCN, Silveira SB, Provenzano JC, Siqueira JF. Removal of Root Canal Fillings in Curved Canals Using Either Reciprocating Single- or Rotary Multi-instrument Systems and a Supplementary Step with the XP-Endo Finisher. J Endod 2016; 42:1114-9. [DOI: 10.1016/j.joen.2016.04.007] [Citation(s) in RCA: 66] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/10/2016] [Revised: 04/07/2016] [Accepted: 04/13/2016] [Indexed: 10/21/2022]
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