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Proximity of the mandibular molar root apex from the buccal bone surface: a cone-beam computed tomographic study.
Restor Dent Endod 2016; 41(3):182-8RD

Abstract

OBJECTIVES

The purpose of this study was to evaluate the proximity of the mandibular molar apex to the buccal bone surface in order to provide anatomic information for apical surgery.

MATERIALS AND METHODS

Cone-beam computed tomography (CBCT) images of 127 mandibular first molars and 153 mandibular second molars were analyzed from 160 patients' records. The distance was measured from the buccal bone surface to the root apex and the apical 3.0 mm on the cross-sectional view of CBCT.

RESULTS

The second molar apex and apical 3 mm were located significantly deeper relative to the buccal bone surface compared with the first molar (p < 0.01). For the mandibular second molars, the distance from the buccal bone surface to the root apex was significantly shorter in patients over 70 years of age (p < 0.05). Furthermore, this distance was significantly shorter when the first molar was missing compared to nonmissing cases (p < 0.05). For the mandibular first molars, the distance to the distal root apex of one distal-rooted tooth was significantly greater than the distance to the disto-buccal root apex (p < 0.01). In mandibular second molar, the distance to the apex of C-shaped roots was significantly greater than the distance to the mesial root apex of non-C-shaped roots (p < 0.01).

CONCLUSIONS

For apical surgery in mandibular molars, the distance from the buccal bone surface to the apex and apical 3 mm is significantly affected by the location, patient age, an adjacent missing anterior tooth, and root configuration.

Authors+Show Affiliations

Department of Conservative Dentistry, Kyungpook National University School of Dentistry, Daegu, Korea.Department of Conservative Dentistry, Kyungpook National University School of Dentistry, Daegu, Korea.Department of Conservative Dentistry, Kyungpook National University School of Dentistry, Daegu, Korea.Department of Conservative Dentistry, Kyungpook National University School of Dentistry, Daegu, Korea.Department of Conservative Dentistry, Kyungpook National University School of Dentistry, Daegu, Korea.

Pub Type(s)

Journal Article

Language

eng

PubMed ID

27508159

Citation

Kim, Dokyung, et al. "Proximity of the Mandibular Molar Root Apex From the Buccal Bone Surface: a Cone-beam Computed Tomographic Study." Restorative Dentistry & Endodontics, vol. 41, no. 3, 2016, pp. 182-8.
Kim D, Ha JH, Jin MU, et al. Proximity of the mandibular molar root apex from the buccal bone surface: a cone-beam computed tomographic study. Restor Dent Endod. 2016;41(3):182-8.
Kim, D., Ha, J. H., Jin, M. U., Kim, Y. K., & Kim, S. K. (2016). Proximity of the mandibular molar root apex from the buccal bone surface: a cone-beam computed tomographic study. Restorative Dentistry & Endodontics, 41(3), pp. 182-8. doi:10.5395/rde.2016.41.3.182.
Kim D, et al. Proximity of the Mandibular Molar Root Apex From the Buccal Bone Surface: a Cone-beam Computed Tomographic Study. Restor Dent Endod. 2016;41(3):182-8. PubMed PMID: 27508159.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Proximity of the mandibular molar root apex from the buccal bone surface: a cone-beam computed tomographic study. AU - Kim,Dokyung, AU - Ha,Jung-Hong, AU - Jin,Myoung-Uk, AU - Kim,Young-Kyung, AU - Kim,Sung Kyo, Y1 - 2016/07/14/ PY - 2015/11/03/received PY - 2016/05/17/accepted PY - 2016/8/11/entrez PY - 2016/8/11/pubmed PY - 2016/8/11/medline KW - Apical surgery KW - Apicoectomy KW - Buccal bone thickness KW - Cone-beam computed tomography KW - Mandibular molar KW - Root apex SP - 182 EP - 8 JF - Restorative dentistry & endodontics JO - Restor Dent Endod VL - 41 IS - 3 N2 - OBJECTIVES: The purpose of this study was to evaluate the proximity of the mandibular molar apex to the buccal bone surface in order to provide anatomic information for apical surgery. MATERIALS AND METHODS: Cone-beam computed tomography (CBCT) images of 127 mandibular first molars and 153 mandibular second molars were analyzed from 160 patients' records. The distance was measured from the buccal bone surface to the root apex and the apical 3.0 mm on the cross-sectional view of CBCT. RESULTS: The second molar apex and apical 3 mm were located significantly deeper relative to the buccal bone surface compared with the first molar (p < 0.01). For the mandibular second molars, the distance from the buccal bone surface to the root apex was significantly shorter in patients over 70 years of age (p < 0.05). Furthermore, this distance was significantly shorter when the first molar was missing compared to nonmissing cases (p < 0.05). For the mandibular first molars, the distance to the distal root apex of one distal-rooted tooth was significantly greater than the distance to the disto-buccal root apex (p < 0.01). In mandibular second molar, the distance to the apex of C-shaped roots was significantly greater than the distance to the mesial root apex of non-C-shaped roots (p < 0.01). CONCLUSIONS: For apical surgery in mandibular molars, the distance from the buccal bone surface to the apex and apical 3 mm is significantly affected by the location, patient age, an adjacent missing anterior tooth, and root configuration. SN - 2234-7658 UR - https://www.unboundmedicine.com/medline/citation/27508159/Proximity_of_the_mandibular_molar_root_apex_from_the_buccal_bone_surface:_a_cone_beam_computed_tomographic_study_ L2 - https://rde.ac/DOIx.php?id=10.5395/rde.2016.41.3.182 DB - PRIME DP - Unbound Medicine ER -