Department of Oral and Maxillofacial Surgery and Diagnostic Science, Department of Preventive Dental Sciences, Department of Conservative Dental Sciences, College of Dentistry, Prince Sattam bin Abdulaziz University Alkharj, Saudi Arabia.
Eur Rev Med Pharmacol Sci. 2022 Jul;26(13):4625-4633. doi: 10.26355/eurrev_202207_29184.
Understanding the labial alveolar bone thickness (ABT) and buccolingual teeth angulation may reduce the complication that might arise during or post-operative treatment. The operator could determine the precise method to ensure long-term treatment success. This study aimed to evaluate the ABT with buccolingual upper incisor teeth angulation based on the maxillary plane by using the cone-beam computed tomography (CBCT).
A total of 371 CBCT radiographs were initially assessed and 100 CBCT radiographs were included. On the maxillary incisors, the labial alveolar bone thickness is evaluated at three points (Point A: Four mm below from CEJ, Point B: Midpoint from the labial alveolar-palatal alveolar crest plane and root apex. Point C: Root Apex of the tooth). The distance from these points to labial alveolar bone was measured for the ABT. Moreover, buccolingual angulation of the tooth was measured by the angle formed by the maxillary plane and the long axis of the tooth.
There is no significant difference observed between genders in the labial alveolar bone thickness. The labial alveolar bone thickness grew gradually from the cementoenamel junction (CEJ) level to the apical level. Moreover, there was a statistically significant positive correlation observed between labial alveolar bone thickness at the apical level (Point C) and angulation (p<0.05).
The labial bone thickness was less than 2 mm in the majority of cases at the three points among maxillary incisors. In addition, there is a correlation between buccolingual angulation of the maxillary incisors and labial alveolar bone thickness.
了解唇侧牙槽骨厚度（ABT）和颊舌向牙齿倾斜角度，可减少治疗过程中或治疗后可能出现的并发症。术者可以确定精确的方法，以确保长期治疗成功。本研究旨在通过锥形束计算机断层扫描（CBCT）评估基于上颌平面的上颌切牙颊舌向倾斜的 ABT。
共评估了 371 例 CBCT 射线照片，其中 100 例 CBCT 射线照片被纳入研究。在上颌切牙上，在三个点评估唇侧牙槽骨厚度（点 A：距 CEJ 下方 4mm，点 B：唇侧牙槽嵴-腭侧牙槽嵴平面和根尖中点，点 C：牙齿根尖）。测量这些点到唇侧牙槽骨的距离即为 ABT。此外，通过上颌平面和牙齿长轴形成的角度测量牙齿的颊舌向倾斜角。
性别之间的唇侧牙槽骨厚度无显著差异。唇侧牙槽骨厚度从牙釉质牙骨质界（CEJ）水平逐渐增加到根尖水平。此外，根尖水平（点 C）的唇侧牙槽骨厚度与倾斜角度之间存在显著正相关（p<0.05）。
在上颌切牙的三个点中，大多数情况下唇侧骨厚度小于 2mm。此外，上颌切牙颊舌向倾斜角度与唇侧牙槽骨厚度之间存在相关性。
