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C-shaped root canal system in mandibular second molars in a Chinese population evaluated by cone-beam computed tomography.
Int Endod J. 2011 Sep; 44(9):857-62.IE

Abstract

AIM

To evaluate the anatomical features of C-shaped canal systems in Chinese mandibular second molars by cone-beam computed tomography (CBCT).

METHODOLOGY

A total of 608 patients of Chinese descent with healthy, well-developed mandibular second molars were enrolled. These patients were referred to the West China Hospital of Stomatology and required radiographic examination by CBCT as part of their routine dental treatment. Of the 608 examined CBCT images, 528 showed unilateral intact molars and 80 showed bilateral intact molars. Bilateral molar data were only used to analyse the distribution of unilateral and bilateral occurrences of C-shaped canals. The following in vivo CBCT observations were made: (i) frequency and type of root; (ii) frequency of C-shaped canals by gender, age and tooth position (left versus right); (iii) the classification of cross-sectional canal images of C-shaped canals; and (iv) unilateral and bilateral occurrences of C-shaped canals.

RESULTS

Fused roots were present in 39% of molars. A C-shaped canal system was present in 39% of the teeth. This prevalence did not differ with gender, age and tooth position. Most (81%) of the C-shaped canals in individuals with bilateral molars were symmetrical. Most of the canals with uninterrupted 'C'-shapes appeared to divide into two or more canals towards the canal terminus.

CONCLUSION

There was high prevalence of C-shaped canals in the mandibular second molars of Chinese population. The canal systems varied considerably in their anatomical configuration.

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 availableNo affiliation info available

Pub Type(s)

Journal Article

Language

eng

PubMed ID

21599707

Citation

Zheng, Q, et al. "C-shaped Root Canal System in Mandibular Second Molars in a Chinese Population Evaluated By Cone-beam Computed Tomography." International Endodontic Journal, vol. 44, no. 9, 2011, pp. 857-62.
Zheng Q, Zhang L, Zhou X, et al. C-shaped root canal system in mandibular second molars in a Chinese population evaluated by cone-beam computed tomography. Int Endod J. 2011;44(9):857-62.
Zheng, Q., Zhang, L., Zhou, X., Wang, Q., Wang, Y., Tang, L., Song, F., & Huang, D. (2011). C-shaped root canal system in mandibular second molars in a Chinese population evaluated by cone-beam computed tomography. International Endodontic Journal, 44(9), 857-62. https://doi.org/10.1111/j.1365-2591.2011.01896.x
Zheng Q, et al. C-shaped Root Canal System in Mandibular Second Molars in a Chinese Population Evaluated By Cone-beam Computed Tomography. Int Endod J. 2011;44(9):857-62. PubMed PMID: 21599707.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - C-shaped root canal system in mandibular second molars in a Chinese population evaluated by cone-beam computed tomography. AU - Zheng,Q, AU - Zhang,L, AU - Zhou,X, AU - Wang,Q, AU - Wang,Y, AU - Tang,L, AU - Song,F, AU - Huang,D, Y1 - 2011/05/21/ PY - 2011/5/24/entrez PY - 2011/5/24/pubmed PY - 2011/12/29/medline SP - 857 EP - 62 JF - International endodontic journal JO - Int Endod J VL - 44 IS - 9 N2 - AIM: To evaluate the anatomical features of C-shaped canal systems in Chinese mandibular second molars by cone-beam computed tomography (CBCT). METHODOLOGY: A total of 608 patients of Chinese descent with healthy, well-developed mandibular second molars were enrolled. These patients were referred to the West China Hospital of Stomatology and required radiographic examination by CBCT as part of their routine dental treatment. Of the 608 examined CBCT images, 528 showed unilateral intact molars and 80 showed bilateral intact molars. Bilateral molar data were only used to analyse the distribution of unilateral and bilateral occurrences of C-shaped canals. The following in vivo CBCT observations were made: (i) frequency and type of root; (ii) frequency of C-shaped canals by gender, age and tooth position (left versus right); (iii) the classification of cross-sectional canal images of C-shaped canals; and (iv) unilateral and bilateral occurrences of C-shaped canals. RESULTS: Fused roots were present in 39% of molars. A C-shaped canal system was present in 39% of the teeth. This prevalence did not differ with gender, age and tooth position. Most (81%) of the C-shaped canals in individuals with bilateral molars were symmetrical. Most of the canals with uninterrupted 'C'-shapes appeared to divide into two or more canals towards the canal terminus. CONCLUSION: There was high prevalence of C-shaped canals in the mandibular second molars of Chinese population. The canal systems varied considerably in their anatomical configuration. SN - 1365-2591 UR - https://www.unboundmedicine.com/medline/citation/21599707/C_shaped_root_canal_system_in_mandibular_second_molars_in_a_Chinese_population_evaluated_by_cone_beam_computed_tomography_ L2 - https://doi.org/10.1111/j.1365-2591.2011.01896.x DB - PRIME DP - Unbound Medicine ER -