NDLI: Evaluation of the root and canal morphology of mandibular first permanent molars in a western Chinese population by cone-beam computed tomography.

Content Provider	World Health Organization (WHO)-Global Index Medicus
Author	Wang, Yao Zheng, Qing-hua Zhou, Xue-dong Tang, Lu Wang, Qian Zheng, Guang-ning Huang, Ding-ming
Spatial Coverage	China
Description	Country affiliation: China Author Affiliation: Wang Y ( State Key Laboratory of Oral Diseases, Sichuan University, Chengdu, China.)
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.
File Format	HTM / HTML
ISSN	00992399
Issue Number	11
Volume Number	36
e-ISSN	18783554
Journal	Journal of Endodontics
Language	English
Publisher	Elsevier
Publisher Date	2010-11-01
Publisher Place	United States
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Discipline Dentistry Mandible Comparative Study Tooth Root Humans Middle Aged Dental Pulp Cavity Male Odontometry Molar Dental Pulp Tooth Apex Journal Article Young Adult Ethnic Groups China Adolescent Sex Factors Cone-beam Computed Tomography Adult Female Aged Child Methods
Content Type	Text
Resource Type	Article
Subject	Dentistry

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