Analysis of Mandibular Structure Using 3D Facial Computed Tomography

作者：Jung Su Young; Shin Seung Youp; Lee Kun Hee; Eun Young Gyu; Lee Young Chan; Kim Sung Wan^*

来源：Otolaryngology - Head and Neck Surgery, 2014, 151(5): 760-764.

DOI：10.1177/0194599814546460

• genial tubercle
• mental foramen
• mandible
• surgery
• 3D facial CT

Objective. This study measured and analyzed the position and dimension of genial tubercle (GT) and mental foramen (MF) %26lt;br%26gt;Study Design. Retrospective chart review study. %26lt;br%26gt;Setting. Tertiary care teaching hospital. %26lt;br%26gt;Subjects and Methods. Two hundred ten subjects were included who received 3-dimensional (3D) facial computed tomography (CT), and the GT and MF were evaluated. Subjects were divided into 4 groups by gender and skeletal type. Seven variables were measured: (1) height of GT (GTH), (2) width of GT (GTW), (3) distance from apices of lower incisors to superior border of GT (LI-SGT), (4) distance from inferior border of GT to inferior border of mandible (IGT-IBM), (5) thickness of anterior mandible (MT), (6) distance from symphysis of mandible to MF (S-MF), and (7) distance from superior border of GT to inferior border of mandible (SGT-IBM). %26lt;br%26gt;Results. All the parameters showed marked differences in individuals. Class I males showed longer GTH, MT, and SGT-IBM than class I females (P %26lt;. 05). IGT-IBM and S-MF were longer in class II males than in class I females (P %26lt; .05). LI-SGT and IGT-IBM also showed personal variation. %26lt;br%26gt;Conclusion. Anatomical features of mandibular structures showed individual variations. GTH, IGT-IBM, MT, S-MF, and SGT-IBM also showed differences between the groups.

• 出版日期2014-11