C-shaped canals in mandibular molars of a Brazilian subpopulation: prevalence and root canal configuration using cone-beam computed tomography

Nejaim, Yuri; Gomes, Amanda Farias; Rosado, Lucas de Paula Lopes; Freitas, Deborah Queiroz; Martins, Jorge N.R.; Silva, Emmanuel João Nogueira Leal

doi:10.1007/s00784-020-03207-6

Cited by 22 publications

(37 citation statements)

References 19 publications

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“…The present study observed a prevalence of 7.60% of C-shaped canals in mandibular molars, where all cases were observed in second molars. The higher prevalence of C-shaped canals in second molars coincides with reports from other studies conducted in South America [11] and the Middle East [15,16].…”

Section: Discussionsupporting

confidence: 89%

“…Studies to determine the prevalence of C-shaped canals have gained great relevance due to their complexity and variability [11]. However, there is consensus that this anatomical variation has a higher prevalence in mandibular second molars regarding first mandibular molars [13,14].…”

Section: Discussionmentioning

confidence: 99%

“…In the first stage, root configuration was determined in a panoramic view, followed by the evaluation of the presence of C-shaped canals in lower molars. For the analysis of the root configuration, the methodology proposed by Nejaim et al [11] was implemented, which used a panoramic reconstruction of 20.4 mm thickness obtained from the CBCT of each patient. In this image, the first and second molars were classified bilaterally according to their root morphology (Figure 1).…”

Section: Imaging Analysismentioning

confidence: 99%

“…In this image, the first and second molars were classified bilaterally according to their root morphology (Figure 1). Subsequently, the presence of C-shaped canals was evaluated using five standardized sections from a multiplanar reconstruction in an axial view [11] (Figure 2), classifying each section according to the classification proposed by Melton [12] (Figure 3). The configuration of the canals was considered to be C-shaped when presenting simultaneously: root fusion, a longitudinal groove on the lingual or buccal surface, and at least one of the five axial cuts classified as C1, C2, or C3.…”

Section: Imaging Analysismentioning

confidence: 99%

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Prevalence and Configuration of C-shaped Canals in Lower Molars from a Chilean Subpopulation

Peña-Bengoa¹,

Ibañez

Ericles

et al. 2021

BDS

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Objective: To determine the prevalence of C-shaped canals in lower molars (first and second molars) in a Chilean subpopulation, and to identify root configuration and demographic characteristics using cone beam tomography. Materials and method: 912 molars (456 first and 456 second molars) resulting from the analysis of 228 mandibular CBCT scans (89 men and 139 women between 15 and 80 years old) were evaluated. Through panoramic reconstruction and axial tomographic sections, the root configuration was established, and the presence and type of C-shaped canal were classified, analyzing 5 levels along the root canal. Data were statistically analyzed with a 5% significance level. Results: Of the 912 molars analyzed, 69 were classified as C-shaped (7.57%), constituting 65.72% of those molars that presented fused roots. 100% of this configuration of canals was observed in lower second molars, presenting a higher prevalence in women (n = 49, 71.01%). 40.82% of the cases that presented a C-shaped configuration manifested bilaterally. The most frequent C-shaped canal configuration was C3 (n = 347, 66.10%), according to Melton's classification. Conclusion: The C-shaped canals in the studied population were observed entirely in lower second molars, showing a clear predilection for the female sex and a high rate of bilaterality. Keywords Anatomy; Cone beam computed tomography; Dental pulp cavity; Endodontics.

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Section: Discussionsupporting

confidence: 89%

Section: Discussionmentioning

confidence: 99%

Section: Imaging Analysismentioning

confidence: 99%

Section: Imaging Analysismentioning

confidence: 99%

See 2 more Smart Citations

Prevalence and Configuration of C-shaped Canals in Lower Molars from a Chilean Subpopulation

Peña-Bengoa¹,

Ibañez

Ericles

et al. 2021

BDS

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“…This anatomical variation is named C-shaped because of the presence of fin or web connecting the individual canals, leading to a configuration that resembles the letter "C" in a transverse section (4)(5)(6). The failure of Hertwig's epithelial root sheath to fuse on buccal or lingual root surface is claimed to be the main cause of this anatomic variation (4,7,8).…”

Section: Introductionmentioning

confidence: 99%

Prevalence of C-Shaped Canals in Anterior and Posterior Teeth of Iranian Population Using Cone Beam Computed Tomography

Rad

Mousavi

Musapoor

et al. 2020

Avicenna J Dent Res

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Background: Lack of knowledge of root anatomy is the second most common reason for failed endodontic therapy. Therefore, acquiring knowledge about it leads to a more effective treatment. C-shaped canal is an anatomical variation that causes clinical challenges. The objective of this study is to determine the occurrence of the C-shaped roots in permanent anterior and posterior teeth of the Iranian population using CBCT (cone beam computed tomography) scans. Methods: This was a descriptive cross-sectional study. In this study, 1408 teeth were assessed. Cranex 3D Mid was used to prepare CBCT images. Each tooth was examined in axial sections, and five different levels were identified as coronal, medium, apical, 1/3, and 2/3. The canal shapes were classified into 5 categories based on modified Melton’s method. Data were analysed using the chi-square test at a significance level of 5%in SPSS version 24.0. Results: In total, of 1408 teeth which were evaluated, 7.81% (110) were confirmed to have C-shaped canals. The occurrence of the C-shaped canal was significantly higher in molars (P < 0.001). The occurrence of the C-shaped canal was significantly higher in mandibular teeth (10.04%) compared to maxillary teeth (5.81%) (P < 0.001). The most common C-shaped canal category was C1 (57.27%). The relationship of gender and age with the C-shaped canal occurrence was not statistically significant (P = 0.585, P = 0.562, respectively). Conclusions: CBCT is a useful tool to evaluate C-shaped root canal morphology. The high occurrence of the C-shaped canal in the Iranian population requires clinical awareness.

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Evaluation of C-shaped canals in mandibular second molars of a selected patient group using cone beam computed tomography: prevalence, configuration and radicular groove types

Kaplan

Sezgin

2021

Odontology

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C-shaped canals in mandibular molars of a Brazilian subpopulation: prevalence and root canal configuration using cone-beam computed tomography

Cited by 22 publications

References 19 publications

Prevalence and Configuration of C-shaped Canals in Lower Molars from a Chilean Subpopulation

Prevalence and Configuration of C-shaped Canals in Lower Molars from a Chilean Subpopulation

Prevalence of C-Shaped Canals in Anterior and Posterior Teeth of Iranian Population Using Cone Beam Computed Tomography

Evaluation of C-shaped canals in mandibular second molars of a selected patient group using cone beam computed tomography: prevalence, configuration and radicular groove types

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