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A cone-beam computed tomography study of maxillary first permanent molar root and canal morphology in a Chinese population.
J Endod. 2010 Sep; 36(9):1480-4.JE

Abstract

AIM

This study evaluated root and canal morphology of permanent maxillary first molars in a Chinese population using cone-beam computed tomography scanning.

METHODOLOGY

The sample included 775 cone-beam computed tomography images of maxillary first molars; 627 of the subjects had unilateral qualifying molars and 74 had bilateral qualifying molars. The following observations were made: (1) frequency of root and canal numbers, (2) frequency of additional canals in the mesiobuccal root by sex, age, and tooth position, and (3) unilateral and bilateral occurrence of additional canals in the mesiobuccal root.

RESULTS

Fused roots were present in 2.71% of unilateral qualifying molars. Multiple canals were present in the following frequencies: two canals in 0.31%, three canals in 47.21%, four canals in 50.40%, five canals in 1.75%, and six canals in 0.31% of teeth. Additional canals were detected in 52.24% of mesiobuccal roots, 1.12% of distobuccal roots, and 1.76% of palatal roots. Patients aged 20 to 30 years showed a higher prevalence of additional mesiobuccal root canals. This prevalence did not differ with sex and tooth position. Most (71.11%) of the additional mesiobuccal root canals in subjects with bilateral qualifying molars were symmetric.

CONCLUSION

Cone-beam computed tomography scanning is an effective method for studying external and internal dental morphology. The root and canal configurations of maxillary first molars in this Chinese population were consistent with previously reported data. More attention should be given to the detection of additional canals in patients between 20 and 30 years of age. These data may facilitate successful endodontic treatment.

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 available

Pub Type(s)

Journal Article

Language

eng

PubMed ID

20728713

Citation

Zheng, Qing-hua, et al. "A Cone-beam Computed Tomography Study of Maxillary First Permanent Molar Root and Canal Morphology in a Chinese Population." Journal of Endodontics, vol. 36, no. 9, 2010, pp. 1480-4.
Zheng QH, Wang Y, Zhou XD, et al. A cone-beam computed tomography study of maxillary first permanent molar root and canal morphology in a Chinese population. J Endod. 2010;36(9):1480-4.
Zheng, Q. H., Wang, Y., Zhou, X. D., Wang, Q., Zheng, G. N., & Huang, D. M. (2010). A cone-beam computed tomography study of maxillary first permanent molar root and canal morphology in a Chinese population. Journal of Endodontics, 36(9), 1480-4. https://doi.org/10.1016/j.joen.2010.06.018
Zheng QH, et al. A Cone-beam Computed Tomography Study of Maxillary First Permanent Molar Root and Canal Morphology in a Chinese Population. J Endod. 2010;36(9):1480-4. PubMed PMID: 20728713.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - A cone-beam computed tomography study of maxillary first permanent molar root and canal morphology in a Chinese population. AU - Zheng,Qing-hua, AU - Wang,Yao, AU - Zhou,Xue-dong, AU - Wang,Qian, AU - Zheng,Guang-ning, AU - Huang,Ding-ming, PY - 2010/04/13/received PY - 2010/06/22/revised PY - 2010/06/22/accepted PY - 2010/8/24/entrez PY - 2010/8/24/pubmed PY - 2010/12/14/medline SP - 1480 EP - 4 JF - Journal of endodontics JO - J Endod VL - 36 IS - 9 N2 - AIM: This study evaluated root and canal morphology of permanent maxillary first molars in a Chinese population using cone-beam computed tomography scanning. METHODOLOGY: The sample included 775 cone-beam computed tomography images of maxillary first molars; 627 of the subjects had unilateral qualifying molars and 74 had bilateral qualifying molars. The following observations were made: (1) frequency of root and canal numbers, (2) frequency of additional canals in the mesiobuccal root by sex, age, and tooth position, and (3) unilateral and bilateral occurrence of additional canals in the mesiobuccal root. RESULTS: Fused roots were present in 2.71% of unilateral qualifying molars. Multiple canals were present in the following frequencies: two canals in 0.31%, three canals in 47.21%, four canals in 50.40%, five canals in 1.75%, and six canals in 0.31% of teeth. Additional canals were detected in 52.24% of mesiobuccal roots, 1.12% of distobuccal roots, and 1.76% of palatal roots. Patients aged 20 to 30 years showed a higher prevalence of additional mesiobuccal root canals. This prevalence did not differ with sex and tooth position. Most (71.11%) of the additional mesiobuccal root canals in subjects with bilateral qualifying molars were symmetric. CONCLUSION: Cone-beam computed tomography scanning is an effective method for studying external and internal dental morphology. The root and canal configurations of maxillary first molars in this Chinese population were consistent with previously reported data. More attention should be given to the detection of additional canals in patients between 20 and 30 years of age. These data may facilitate successful endodontic treatment. SN - 1878-3554 UR - https://www.unboundmedicine.com/medline/citation/20728713/A_cone_beam_computed_tomography_study_of_maxillary_first_permanent_molar_root_and_canal_morphology_in_a_Chinese_population_ L2 - https://linkinghub.elsevier.com/retrieve/pii/S0099-2399(10)00521-2 DB - PRIME DP - Unbound Medicine ER -