Prevalence Studies on Root Canal Anatomy Using Cone-beam Computed Tomographic Imaging: A Systematic Review

Martins, Jorge N.R.; Marques, Duarte; Silva, Emmanuel João Nogueira Leal; Caramês, João; Versiani, Marco Aurélio

doi:10.1016/j.joen.2018.12.016

Cited by 97 publications

(128 citation statements)

References 131 publications

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“…These studies pointed out different degree of prevalence of second canal in Chinese population in different regions in China. And there were a few systematic reviews undergone for the internal morphology of the teeth [ 10 – 12 ]. However, no systematic review and meta-analysis on the evidence of second canal between permanent mandibular central and lateral incisors was undertaken.…”

Section: Introductionmentioning

confidence: 99%

Evidence of Second Canal between Permanent Mandibular Central and Lateral Incisors in China; a Systematic Review on CBCT Studies

Aung

Myint

2020

International Journal of Dentistry

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Introduction. Evidence of second canal in permanent mandibular incisors is frequently questioned in dentistry. The difference in evidence between the two teeth is an interesting argument across different countries and ethnicities. So the aim of the systematic review was to investigate the evidence of second canal between permanent mandibular central and lateral incisors in China. Materials and Methods. The papers were selected from the electronic databases and hand searching according to inclusion and exclusion criteria. All qualified studies were judged by the reviewers. The selected studies were checked with Joanna Briggs Institute Critical Appraisal tool for prevalence studies. Finally, three studies were selected for the review and meta-analyses. The proportion of the second canal with its confidence interval and forest plot for the meta-analyses were calculated. Results. The evidences of second canal in permanent mandibular central and lateral incisors in China were 5.6% and 14.1%. Only one study reported bilateral symmetry of the second canal as 58.7% and 76.1% in the two types of teeth. Out of all canal anatomies, Vertucci’s type ΙΙΙ was dominant comprising 4.1% and 11.2% together with other second-canal types comprising 1.4% and 3% in permanent mandibular central and lateral incisors. When the proportions were meta-analyzed, mandibular central incisors had been less numerous OR = 0.35 [0.31, 0.40], 0.33[0.28, 0.39], and 0.42 [0.22, 0.79] in the evidence of second canal, of Type ΙΙΙ, and of other types except Type ΙΙΙ than mandibular lateral incisors in China. Out of all second-canal anatomies, Type ΙΙΙ presented 72.5% and 78.9% along with other second-canal types comprising 24.3% and 21.1% in the two teeth in China. Discussion. There was the evidence of second canal which deviated toward the permanent mandibular lateral incisor also in case of bilateral symmetry, the prevalence of Vertucci’s Type ΙΙΙ, and other second-canal types out of all canal anatomies.

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Section: Introductionmentioning

confidence: 99%

Evidence of Second Canal between Permanent Mandibular Central and Lateral Incisors in China; a Systematic Review on CBCT Studies

Aung

Myint

2020

International Journal of Dentistry

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“…Indeed, it has been reported that root filled teeth with missed canals are 4.38 (Karabucak et al ) to 6.25 (Costa et al ) times more likely to be associated with apical periodontitis. Therefore, considering that complex morphologies, such as a single root with multiple canal systems, are challenging to debride effectively, knowledge of the prevalence of additional canals in a tooth group should help clinicians to anticipate their presence in clinical practice (Martins et al ).…”

Section: Introductionmentioning

confidence: 99%

Evaluation of dentine thickness of middle mesial canals of mandibular molars prepared with rotary instruments: a micro‐CT study

et al. 2019

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Aim To evaluate, using micro‐CT, the remaining dentine thickness after preparation of the mesiobuccal (MB), mesiolingual (ML) and middle mesial (MM) canals of mandibular first molars with the ProTaper Next rotary system. Methodology Eleven mesial roots of mandibular first molars having three independent canals from the furcation level up to at least 5 mm towards the apical direction were selected. Preparation of MM canals was performed in two steps using ProTaper Next X2 (step 1) and X3 (step 2) instruments, whilst MB and ML canals were prepared in a single step up to X3 instruments. The roots were scanned (pixel size of 10 µm) before and after each step, and the dentine volume was calculated. Postoperative models of the roots were coregistered with their preoperative dataset and colour‐coded cross‐sections of the roots were used to measure the smallest dentine thickness surrounding each canal at 1.0‐mm intervals from the furcation level up to 5 mm in the apical direction, in both mesial and distal aspects of the roots. Changes in the remaining wall thickness between mesial canals were analysed with repeated‐measures anova and post hoc Tukey test. Significance level was set at 5%. Results Mean percentage reduction of dentine volume after steps 1 and 2 was 4.66% and 5.16%, respectively. Overall, pre‐ and postoperative dentine thickness of the MM canal walls, in both mesial and distal aspects of the root, were significantly thinner than those of MB and ML canals (P < 0.05). No significant difference was observed when comparing dentine thickness in the mesial and distal directions of MM canal after preparation step 1 (0.88 ± 0.18 mm and 0.73 ± 0.26 mm, respectively) or 2 (0.83 ± 0.17 mm and 0.67 ± 0.26 mm, respectively) (P > 0.05). Dentine thickness values less than 0.5 mm were observed mostly towards the distal aspect of the MM canal. Mesial roots were not associated with strip perforations after canal preparation procedures. Conclusions A significant decrease in the thickness of canal walls at all levels evaluated in the mesial roots of mandibular molars suggests that files with small tapers should be used in preference to instruments with large tapers to prepare mesial canals in mandibular molars.

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“…In order to reach a successful root canal debridement and a subsequent successful root canal obturation, it is essential to know the internal root canal anatomy. (1) It is necessary to know unusual root canal anatomies and their differences. It has been proven that the presence of a conical root canal with a single apical foramen is an exception and not a rule.…”

Section: Introductionmentioning

confidence: 99%

Prevalence of Mid-Mesial Canal and Isthmuses in Mandibular First and Second Molars in an Iranian Population

Shakeri

Azizi²,

Razian

et al. 2019

J Res Dentomaxillofac Sci

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1. Dental student , sari faculty of dentistry, mazandaran university of medical science , ,sari, iran 2. Dentist ,sari ,iran 3.Dental student, sari dental faculty ,mazandaran university of medical sciences, sari, iran 4.Associate professor, department of radiology ,babol dental faculty, babol university of medical sciences , babol , iran 5.Assistant professor, department of endodontics, sari dental faculty , mazandaran university of medical sciences, sari ,iran

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Prevalence Studies on Root Canal Anatomy Using Cone-beam Computed Tomographic Imaging: A Systematic Review

Cited by 97 publications

References 131 publications

Evidence of Second Canal between Permanent Mandibular Central and Lateral Incisors in China; a Systematic Review on CBCT Studies

Evidence of Second Canal between Permanent Mandibular Central and Lateral Incisors in China; a Systematic Review on CBCT Studies

Evaluation of dentine thickness of middle mesial canals of mandibular molars prepared with rotary instruments: a micro‐CT study

Prevalence of Mid-Mesial Canal and Isthmuses in Mandibular First and Second Molars in an Iranian Population

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