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Proximity of the Mandibular Canal to Teeth and Cortical Bone.
J Endod 2016; 42(2):221-4JE

Abstract

INTRODUCTION

The proximity of the inferior alveolar canal to the mandibular molar roots may pose a risk of injury during various dental surgeries. The purpose of this study was to evaluate age-related and gender-related changes by using cone-beam computed tomography images between the roots of the second molars, mandibular cortex, and the inferior alveolar canal.

METHODS

One hundred fifty-five patients (68 men, 87 women), 20 years and older, who had previous cone-beam computed tomography scans were enrolled in this study. The patients were subcategorized by gender and age (group I, <21 years; group II, 21-40 years; and group III, >40 years). Distance between the mandibular canal (MC) and the second molar distal root apex as well as the 3 mandibular cortical regions (inferior cortex, buccal cortex, and lingual cortex) were measured.

RESULTS

In men, the second molar root apex to the MC distance was significantly shorter in group I than in group III (P < .01). In women, the second molar root apex to the MC distance was significantly shorter in group I than in group II and group III (P < .05). In both men and women, the buccal cortex of the mandible to the MC distance was significantly shorter on the right side compared with the left side (P < .01).

CONCLUSIONS

Our study shows that age, gender, and region have an influence on the location of the MC in the second molar area.

Authors+Show Affiliations

Department of Radiology, Boston Medical Center, Boston University School of Medicine, Boston, Massachusetts; Department of Radiology, Nihon University School of Dentistry at Matsudo, Chiba, Japan. Electronic address: yusukekawashima05@gmail.com.Department of Otolaryngology-Head and Neck Surgery, Boston Medical Center, Boston University School of Medicine, Boston, Massachusetts; Department of Radiation Oncology, Boston Medical Center, Boston University School of Medicine, Boston, Massachusetts.Division of Oral and Maxillofacial Radiology, Boston University Henry M. Goldman School of Dental Medicine, Boston, Massachusetts.Department of Radiology, Nihon University School of Dentistry at Matsudo, Chiba, Japan.Division of Oral and Maxillofacial Radiology, Boston University Henry M. Goldman School of Dental Medicine, Boston, Massachusetts.

Pub Type(s)

Journal Article
Research Support, Non-U.S. Gov't

Language

eng

PubMed ID

26725176

Citation

Kawashima, Yusuke, et al. "Proximity of the Mandibular Canal to Teeth and Cortical Bone." Journal of Endodontics, vol. 42, no. 2, 2016, pp. 221-4.
Kawashima Y, Sakai O, Shosho D, et al. Proximity of the Mandibular Canal to Teeth and Cortical Bone. J Endod. 2016;42(2):221-4.
Kawashima, Y., Sakai, O., Shosho, D., Kaneda, T., & Gohel, A. (2016). Proximity of the Mandibular Canal to Teeth and Cortical Bone. Journal of Endodontics, 42(2), pp. 221-4. doi:10.1016/j.joen.2015.11.009.
Kawashima Y, et al. Proximity of the Mandibular Canal to Teeth and Cortical Bone. J Endod. 2016;42(2):221-4. PubMed PMID: 26725176.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Proximity of the Mandibular Canal to Teeth and Cortical Bone. AU - Kawashima,Yusuke, AU - Sakai,Osamu, AU - Shosho,Dhurata, AU - Kaneda,Takashi, AU - Gohel,Anita, Y1 - 2015/12/24/ PY - 2015/08/30/received PY - 2015/10/31/revised PY - 2015/11/11/accepted PY - 2016/1/4/entrez PY - 2016/1/5/pubmed PY - 2017/7/19/medline KW - Inferior alveolar nerve KW - mandibular canal KW - mandibular cortex KW - mandibular second molar SP - 221 EP - 4 JF - Journal of endodontics JO - J Endod VL - 42 IS - 2 N2 - INTRODUCTION: The proximity of the inferior alveolar canal to the mandibular molar roots may pose a risk of injury during various dental surgeries. The purpose of this study was to evaluate age-related and gender-related changes by using cone-beam computed tomography images between the roots of the second molars, mandibular cortex, and the inferior alveolar canal. METHODS: One hundred fifty-five patients (68 men, 87 women), 20 years and older, who had previous cone-beam computed tomography scans were enrolled in this study. The patients were subcategorized by gender and age (group I, <21 years; group II, 21-40 years; and group III, >40 years). Distance between the mandibular canal (MC) and the second molar distal root apex as well as the 3 mandibular cortical regions (inferior cortex, buccal cortex, and lingual cortex) were measured. RESULTS: In men, the second molar root apex to the MC distance was significantly shorter in group I than in group III (P < .01). In women, the second molar root apex to the MC distance was significantly shorter in group I than in group II and group III (P < .05). In both men and women, the buccal cortex of the mandible to the MC distance was significantly shorter on the right side compared with the left side (P < .01). CONCLUSIONS: Our study shows that age, gender, and region have an influence on the location of the MC in the second molar area. SN - 1878-3554 UR - https://www.unboundmedicine.com/medline/citation/26725176/Proximity_of_the_Mandibular_Canal_to_Teeth_and_Cortical_Bone_ L2 - https://linkinghub.elsevier.com/retrieve/pii/S0099-2399(15)01006-7 DB - PRIME DP - Unbound Medicine ER -