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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.
J Endod 2010; 36(11):1786-9JE

Abstract

INTRODUCTION

The purpose of this study was to evaluate the root and canal morphology of mandibular first permanent molars in a western Chinese population by using cone-beam computed tomography (CBCT).

METHODS

In this study, 558 samples were examined by CBCT. Details of sex, tooth position, the number of roots and canals, and the canal configuration were recorded. The root canal configuration was categorized and compared according to Vertucci's criteria.

RESULTS

Overall, 51.4% of the mandibular first permanent molars examined had four canals, and 25.8% had a separate distolingual root. In 48.1% of these, the fourth canal was in the separate distolingual root. In the two-rooted mandibular first permanent molars, 93.9% of the mesial root canals were of type IV, and 62.9% of the distal root canals were of type I. In the three-rooted samples, 94.4% of the mesial root canals were of type IV, and 98.6% of the distobuccal and 100% of the distolingual root canals were of type I. In addition, there was a higher incidence of three-rooted mandibular first permanent molars on the left side than on the right, but this relationship was not significantly correlated with sex.

CONCLUSIONS

Mandibular first permanent molars commonly have four canals and a higher prevalence for a separated distolingual canal in a western Chinese population.

Authors+Show Affiliations

State Key Laboratory of Oral Diseases, Sichuan University, Chengdu, China.No affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info available

Pub Type(s)

Comparative Study
Journal Article

Language

eng

PubMed ID

20951288

Citation

Wang, Yao, et al. "Evaluation of the Root and Canal Morphology of Mandibular First Permanent Molars in a Western Chinese Population By Cone-beam Computed Tomography." Journal of Endodontics, vol. 36, no. 11, 2010, pp. 1786-9.
Wang Y, Zheng QH, Zhou XD, et al. Evaluation of the root and canal morphology of mandibular first permanent molars in a western Chinese population by cone-beam computed tomography. J Endod. 2010;36(11):1786-9.
Wang, Y., Zheng, Q. H., Zhou, X. D., Tang, L., Wang, Q., Zheng, G. N., & Huang, D. M. (2010). Evaluation of the root and canal morphology of mandibular first permanent molars in a western Chinese population by cone-beam computed tomography. Journal of Endodontics, 36(11), pp. 1786-9. doi:10.1016/j.joen.2010.08.016.
Wang Y, et al. Evaluation of the Root and Canal Morphology of Mandibular First Permanent Molars in a Western Chinese Population By Cone-beam Computed Tomography. J Endod. 2010;36(11):1786-9. PubMed PMID: 20951288.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Evaluation of the root and canal morphology of mandibular first permanent molars in a western Chinese population by cone-beam computed tomography. AU - Wang,Yao, AU - Zheng,Qing-hua, AU - Zhou,Xue-dong, AU - Tang,Lu, AU - Wang,Qian, AU - Zheng,Guang-ning, AU - Huang,Ding-ming, Y1 - 2010/09/17/ PY - 2010/04/28/received PY - 2010/07/30/revised PY - 2010/08/06/accepted PY - 2010/10/19/entrez PY - 2010/10/19/pubmed PY - 2011/3/25/medline SP - 1786 EP - 9 JF - Journal of endodontics JO - J Endod VL - 36 IS - 11 N2 - INTRODUCTION: The purpose of this study was to evaluate the root and canal morphology of mandibular first permanent molars in a western Chinese population by using cone-beam computed tomography (CBCT). METHODS: In this study, 558 samples were examined by CBCT. Details of sex, tooth position, the number of roots and canals, and the canal configuration were recorded. The root canal configuration was categorized and compared according to Vertucci's criteria. RESULTS: Overall, 51.4% of the mandibular first permanent molars examined had four canals, and 25.8% had a separate distolingual root. In 48.1% of these, the fourth canal was in the separate distolingual root. In the two-rooted mandibular first permanent molars, 93.9% of the mesial root canals were of type IV, and 62.9% of the distal root canals were of type I. In the three-rooted samples, 94.4% of the mesial root canals were of type IV, and 98.6% of the distobuccal and 100% of the distolingual root canals were of type I. In addition, there was a higher incidence of three-rooted mandibular first permanent molars on the left side than on the right, but this relationship was not significantly correlated with sex. CONCLUSIONS: Mandibular first permanent molars commonly have four canals and a higher prevalence for a separated distolingual canal in a western Chinese population. SN - 1878-3554 UR - https://www.unboundmedicine.com/medline/citation/20951288/Evaluation_of_the_root_and_canal_morphology_of_mandibular_first_permanent_molars_in_a_western_Chinese_population_by_cone_beam_computed_tomography_ L2 - https://linkinghub.elsevier.com/retrieve/pii/S0099-2399(10)00674-6 DB - PRIME DP - Unbound Medicine ER -