Evaluation of the Root and Canal Morphology of Mandibular First Permanent Molars in a Western Chinese Population by Cone-Beam Computed Tomography

Wang, Yao; Zheng, Qianqian; Zhou, Xuedong; Tang, Lu; Wang, Qian; Zheng, Guiqiu; Huang, Dingming

doi:10.1016/j.joen.2010.08.016

Cited by 124 publications

(125 citation statements)

References 24 publications

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“…Braz Oral Res., (São Paulo) 2014;28(1): [1][2][3][4][5][6][7] Although traditional radiographs are very useful in the preoperative assessment of canal anatomy, they are unlikely to show the extent of complexities of the root canal system, because of the image superimposition provided by the two-dimensional images of conventional radiography.…”

Section: Declaration Of Interestsmentioning

confidence: 99%

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Prevalence of C-shaped root canal in a Brazilian subpopulation: a cone-beam computed tomography analysis

et al. 2014

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Prevalence of C-shaped root canal in a Brazilian subpopulation: a cone-beam computed tomography analysis Abstract: The aim of this study was to use cone-beam computed tomography (CBCT) images to evaluate the prevalence and configurations of Cshaped canals in permanent mandibular second molars among members of a Brazilian subpopulation. CBCT exams of 214 patients (406 teeth) were evaluated for: presence of C-shaped root canals, number of canals and direction of the root grooves (buccal or lingual). Of the 214 CBCT images examined, 192 showed intact bilateral molars, which were used to analyze the distribution of unilateral and bilateral occurrences of Cshaped canals. The prevalence of these canals was correlated with gender and age, and the number of canals was correlated with the direction of the root grooves using the chi-squared test (α = 0.05). The prevalence of C-shaped canals was 15.3%. This prevalence did not differ with gender or age. Most of the C-shaped molars had three (43.5%) or two (37.1%) canals; 69.4% of the C-shaped canals were grooved in the buccal direction; 68.3% of the C-shaped cases were unilateral. In conclusion, there was a significant prevalence of C-shaped canals in the mandibular second molars of the population studied; the C-shaped canal system varied in configuration, with a higher prevalence of three and two canals and unilateral occurrence; CBCT is a useful tool for endodontic diagnosis and treatment.

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Section: Declaration Of Interestsmentioning

confidence: 99%

“…4,5 Its advantages allow the clinician a more thorough understanding of the true morphology of root canal systems. 6 The prevalence of a C-shaped canal in mandibular second molars has been estimated to range from 2.7% to 44.5%, depending on the population and ethnic group:…”

Section: Declaration Of Interestsmentioning

confidence: 99%

Prevalence of C-shaped root canal in a Brazilian subpopulation: a cone-beam computed tomography analysis

et al. 2014

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“…Recently CBCT is introduced as an extra oral technique with capability of 3D imaging, which has considerably lower radiation dose than conventional CT (1). Therefore, its benefits are lower exposure time, higher resolution and accuracy (4,5). Besides, it has been shown to be more accurate than digital radiographs to determine root canal systems with its in vivo usage in diagnosis and preoperative assessments (1).…”

Section: Introductionmentioning

confidence: 99%

Cone Beam Computed Tomography Study of Root and Canal Morphology of Maxillary first Molar in an Iranian Population

Faramarzi¹,

Vossoghi²,

Shokri³

et al. 2015

Avicenna J Dent Res

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Background:The success of endodontic treatment depends on detection of all root canals so that they could be cleaned, shaped and obturated appropriately. To achieve this, it is essential to know root canals complexities such as the number of canals and types of each root canal, which are genetically determined. Besides, the highest failure rates occur in maxillary first molars. Objectives: Therefore, the aim of this study was to investigate the root and canal morphology of maxillary first molars in an Iranian population using cone-beam computed tomography (CBCT). Materials and Methods: In this study, images of 156 extracted maxillary first molars placed in the waxed blocks were produced using CBCT. Two professional investigators checked images by NNT software in New Tom 3G system. Axial view and cross section of 1 mm thickness were used. The number of roots, canals, each roots canal, MB 1 -MB 2 orifice distances and canal types of the Vertucci classification were recorded. Finally, data was analyzed using SPSS16 software. Results: We found 100% of cases with three separated roots, from which 69.23% had four canals including MB 2 and 30.77% with three canals. 71.3% of mesiobuccal roots were two canals of type two Vertucci and 28.7% type 4 with the mean distance value of 2.55 ± 0.57 mm between MB 1 and MB 2 orifice. Conclusions: Most extracted maxillary first molars were three rooted and four canals. CBCT has relatively high reproducibility and accuracy of distinguishing MB 2 canal.

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“…In one study on Chinese population, the DL root of the mandibular first molar was found to more frequently be located on the left side as compared to the right [16]. However, studies of Taiwanese and Koreans reported that the DL root was found more on the right side than on the left [8,17,18].…”

Section: Discussionmentioning

confidence: 98%

Evaluation of the endodontically-treated distolingual root of the mandibular first molar using cone-beam computed tomography

2017

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·············································································································································································This retrospective study evaluated the endodontic treatment of a separate distolingual (DL) root of the mandibular first molar, using conebeam computed tomography (CBCT) images. The study included CBCT images of patients at a Korean dental college hospital. All endodontically-treated mandibular first molars having a separate DL root, were investigated. The presence of periapical lesions in the distobuccal (DB) and DL root, as well as the presence and quality of canal filling, were assessed. The differences in the quality of the root canal filling between the DL root and the DB root were analyzed using a Fisher's exact test. Multivariate logistic regression analysis separately identified the factors affecting untreated canal and adequately-filled canal of the DL root. A total of 215 mandibular first molars having a separate DL root, were found to be treated endodontically. The incidence of an untreated canal in the DL root was 28.8%, whereas only 39.5% of the DL canals had an adequate canal filling. The incidence of untreated canals was significantly higher in the DL root than in the DB root (p <0.001). The right side was significantly associated with the presence of untreated DL canal. Adequately-filled DL canal was also associated with tooth position, and was not associated with gender, age, or the presence of a periapical lesion. The canal of DL root of the mandibular first molar was more untreated and not adequately filled, as compared to the DB canal, especially in the right side tooth.

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Evaluation of the Root and Canal Morphology of Mandibular First Permanent Molars in a Western Chinese Population by Cone-Beam Computed Tomography

Cited by 124 publications

References 24 publications

Prevalence of C-shaped root canal in a Brazilian subpopulation: a cone-beam computed tomography analysis

Prevalence of C-shaped root canal in a Brazilian subpopulation: a cone-beam computed tomography analysis

Cone Beam Computed Tomography Study of Root and Canal Morphology of Maxillary first Molar in an Iranian Population

Evaluation of the endodontically-treated distolingual root of the mandibular first molar using cone-beam computed tomography

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