Campoy M-D, Chiquillo-Enguix S, García-Sanz V, Pérez-Varela J-C, Camañes-Gonzalvo S, Paredes-Gallardo V
Orthodontics Teaching Unit, Department of Stomatology University of Valencia Gascó Oliag, 1. 46010. Valencia, Spain
Med Oral Patol Oral Cir Bucal. 2025 Jan 1;30(1):e135-e140. doi: 10.4317/medoral.26897.
The placement of Temporary Anchorage Devices (TADs) in the mandibular buccal shelf area is a common option for distalizing the lower arch. Therefore, the study of bone thickness and depth in this area is mandatory before planning TAD insertion. The aim of this study was to quantify the width and depth of the mandibular buccal shelf structure and examine its associations with sex, age, skeletal class and vertical pattern.
A cross-sectional study was carried out on cone beam computed tomographies obtained from 91 patients. The bone thickness was evaluated in the mandibular buccal shelf area 5 and 8 mm apical to the cement-enamel junction (CEJ), and the bone depth was measured 4 mm buccal to the CEJ at the level of the distal root of the mandibular first molar and the mesial root of the mandibular second molar using the InVivoDental 6.0 software.
The depth and thickness of the bone increased in distal areas, and the thickness was greater at 8 mm. No differences were found between sex or skeletal class. Bone thickness decreased with age, and it was significantly lower in hyperdivergent patients.
The thickness of the bone was higher in distal and deeper areas, and the depth was greater in distal areas. The hyperdivergent facial pattern and age were negatively associated with bone thickness.
在下颌颊侧牙槽嵴区域植入临时锚固装置（TADs）是远移下牙弓的常用方法。因此，在计划植入TADs之前，必须对该区域的骨厚度和深度进行研究。本研究的目的是量化下颌颊侧牙槽嵴结构的宽度和深度，并研究其与性别、年龄、骨骼类型和垂直骨面型的关系。
对91例患者的锥形束计算机断层扫描图像进行横断面研究。使用InVivoDental 6.0软件在下颌颊侧牙槽嵴区域距牙骨质-釉质界（CEJ）根尖5mm和8mm处评估骨厚度，并在下颌第一磨牙远中根和下颌第二磨牙近中根水平距CEJ颊侧4mm处测量骨深度。
骨深度和厚度在远中区域增加，且在8mm处厚度更大。性别或骨骼类型之间未发现差异。骨厚度随年龄增长而降低，在高角型患者中显著更低。
骨厚度在远中及更深区域更高，深度在远中区域更大。高角型面型和年龄与骨厚度呈负相关。
