Missed canals in endodontically treated maxillary molars of a Brazilian subpopulation: prevalence and association with periapical lesion using cone-beam computed tomography

Carmo, Weslley Duarte do; Verner, Francielle Silvestre; Aguiar, Larisse Martins; Visconti, Maria Augusta Portella Guedes; Ferreira, Matheus Diniz; Lacerda, Mariane Floriano Lopes Santos; Junqueira, Rafael Binato

doi:10.1007/s00784-020-03554-4

Cited by 31 publications

(41 citation statements)

References 35 publications

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“…13,14 The prevalence of endodontic treatment failure due to untreated MB2 canal as reported in the literature ranges from 46% to 78%. [15][16][17] This shows the importance of locating and treating the MB2 canal.…”

Section: Introductionmentioning

confidence: 97%

Assessment of Mesiobuccal Canal Configuration, Prevalence and Inter-Orifice Distance at Different Root Thirds of Maxillary First Molars: A CBCT Study

Howait¹,

Al-Habib²

2021

CCIDE

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The aims of this study were to assess the prevalence and configuration of the second mesiobuccal (MB2) canal in the mesiobuccal MB root of permanent maxillary first molars at different root levels in a Saudi sub-population using cone-beam computed tomography (CBCT) and to measure the inter-orifice distance between MB & MB2 at the pulpal floor level. Materials and Methods: This retrospective study was carried out on CBCT images of Saudi patients seen at King Abdul Aziz University. A total of 106 maxillary first molars were evaluated using a specialized software program (iCAT CBCT software). The prevalence of MB2, canal configuration and location of joining (apical-middle-coronal), if present was calculated. Also, the inter-orifice distance between both canals was measured at the level of the pulpal floor. Chi-square and one-way analysis of variance (ANOVA) were used. Results: The MB2 canal was found in 92 (86.8%) maxillary first molar teeth. The MB and MB2 canals were joined in 61 (58%) cases, where the location of joining was 14 (23%), 17 (27%), and 31 (50%) in the coronal, middle, and apical third, respectively. The mean interorifice distance between both canals at the level of the pulpal floor was 2.52±0.76 mm. Conclusion: The prevalence of MB2 canal in this Saudi sub-population was high. The prevalence decreased as the root canal approached the apical third. There was no correlation between the average distance and occurrence of canal joining. CBCT is useful in detecting and mapping the mesiobuccal root canal system, with a likelihood of enhancing the quality of root canal treatment.

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Section: Introductionmentioning

confidence: 97%

Assessment of Mesiobuccal Canal Configuration, Prevalence and Inter-Orifice Distance at Different Root Thirds of Maxillary First Molars: A CBCT Study

Howait¹,

Al-Habib²

2021

CCIDE

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“…Cases of unsuccessful endodontic treatment involving the MB root in maxillary molars have become a topic of concern due to the frequent association between persistent lesions and unfilled MB2 canals [ 1 2 3 ]. Therefore, in this study, we aimed to assess the morphological characteristics of MB roots with and without an MB2 canal, which, to the best of our knowledge, have not been investigated.…”

Section: Discussionmentioning

confidence: 99%

“…Recent studies in the scientific literature have reported a high percentage of failure to fill second mesiobuccal (MB2) canals during endodontic treatment of maxillary molars [ 1 2 3 ]. The most likely reason for this finding is the high prevalence of MB2 canals, which are associated with a wide variety of configurations of the internal anatomy of the mesiobuccal (MB) root [ 4 5 ].…”

Section: Introductionmentioning

confidence: 99%

Morphological characteristics of the mesiobuccal root in the presence of a second mesiobuccal canal: a micro-CT study

et al. 2022

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Objectives This study investigated the internal morphology of mesiobuccal (MB) roots of maxillary molars with a second mesiobuccal (MB2) canal. Materials and Methods Forty-seven maxillary first or second molars from Brazilians were scanned using micro-computed tomography. The following measurements were obtained from the MB roots: root thickness, root width, and dentin thickness of the buccal aspect of the first mesiobuccal (MB1) canal, between the MB1 and MB2 canals, and the palatal aspect of the MB2 and MB1 canals at 3 mm from the root apex and in the furcation region. For statistical analysis, the Student’s t -test and analysis of variance with the post-hoc Tukey test were used (α = 0.05). Results In maxillary molars with an MB2 canal, MB roots were significantly thicker ( p = 0.0014) and narrower ( p = 0.0016) than in maxillary molars without an MB2 canal. The dentin thickness of the palatal aspect of the MB1 canal was also significantly greater than that of MB roots without an MB2 canal at 3 mm from the root apex ( p = 0.0007) and in the furcation region ( p < 0.0001). In the furcation region of maxillary molars with an MB2 canal, the dentin thickness between the MB1 and MB2 canals was significantly smaller than that in the buccal and palatal aspects ( p < 0.0001). Conclusions The internal morphology of MB roots of maxillary molars with an MB2 canal revealed differences in dentin thickness, root diameter, and distance between the canals when compared with maxillary molars without an MB2 canal.

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“…Secondly, the models allow to specifically teach problematic anatomical aspects. For example, the models facilitate locating and flaring the MB2 of maxillary molars, one of the most frequently missed canal during endodontic treatment [ 32 ]. Finally, the option to have narrow root canals enables highly demanding training leading to a more realistic preparation for patient treatment.…”

Section: Discussionmentioning

confidence: 99%

Evaluation of new endodontic tooth models in clinical education from the perspective of students and demonstrators

2021

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Background The quality of root canal treatments performed by undergraduate students is often unsatisfactory questioning the current methods of teaching. Based on treatment errors made by students participating the endodontic courses at RWTH Aachen University (Germany), new radiopaque artificial root canal treatment models (DRSK RCT; incisor, premolar, molar) were designed and developed. The aim of the study was to evaluate these models by groups of students and demonstrators. Methods A total number of 60 students and seven demonstrators from a single institution (RWTH Aachen) participated in this study. They performed endodontic treatments on either initial versions of the DRSK RCT or modified versions. The initial versions were evaluated by students (n = 25) and demonstrators (n = 7). The obtained questionnaire was conducted as 7-point Likert-Scale covering the topics material properties, feeling while performing exercises and perception of its closeness to reality via 19 items (students) and 21 items (demonstrators). According to the evaluations several alterations were applied to the DRSK RCT, the whole study was repeated and evaluated by different students (n = 35) and the same demonstrators (n = 7). Additionally, the demonstrators blindly evaluated the quality of root canal treatments performed by the students (n = 35) on the modified DRSK RCT. Comparisons between the initial versions and the modified versions were calculated using Chi-squared tests. Results Students as well as demonstrators positively evaluated both variants of the DRSK RCT with especially high ratings in the overall evaluation. Students’ rating of the pulp anatomy significantly increased from 5.4 ± 1.1 (mean ± SD) to 5.9 ± 0.9 (mean ± SD; p < 0.05) for the modified model. Likewise, students felt that the ability to flare root canals improved after alterations have been applied. Ratings significantly increased from 4.8 ± 1.6 (mean ± SD) to 5.6 ± 1.0 (mean ± SD; p < 0.05). Conclusion The results indicate that the DRSK RCT is a promising candidate to be used as an alternative to extracted teeth or as an additional tool for improving dental education. However, some limitations of our analysis have to be considered.

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Missed canals in endodontically treated maxillary molars of a Brazilian subpopulation: prevalence and association with periapical lesion using cone-beam computed tomography

Cited by 31 publications

References 35 publications

Assessment of Mesiobuccal Canal Configuration, Prevalence and Inter-Orifice Distance at Different Root Thirds of Maxillary First Molars: A CBCT Study

Assessment of Mesiobuccal Canal Configuration, Prevalence and Inter-Orifice Distance at Different Root Thirds of Maxillary First Molars: A CBCT Study

Morphological characteristics of the mesiobuccal root in the presence of a second mesiobuccal canal: a micro-CT study

Evaluation of new endodontic tooth models in clinical education from the perspective of students and demonstrators

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