牙根表面积测量方法的研究进展
Research progress on root surface area measurement

摘要： 牙周膜作为附着在牙根表面的一层致密结缔组织，具有支持稳固牙列和调节咀嚼压力等重要功能。准确测定牙周膜面积有助于临床医生评估牙周炎患者的牙体预后，或制定牙体缺失后的修复方案。测定牙根表面积（RSA）作为测量牙周膜面积的常用替代方法，具有成膜法、图像分割法、质量转换法、牙根三维扫描法和CT三维重建法等多种测量方法，测量精度高等优点，因此，本文就RSA测定方法发展史和RSA的具体测量方法及RSA测量在临床上的应用等研究进展作一综述。
Abstract: As a layer of dense connective tissues attached to the root surface, periodontal ligament performs numerous biological functions, such as supporting dentition and adjusting biting force. The accurate measurement of periodontal ligament area can help dentists perform the prognosis of teeth suffering from periodontitis and establish effective treatment plans for missing teeth. The measurement of root surface area is an alternative method to determine the periodontal ligament area. The root surface area can be measured by using various techniques, such as membrane technique, image segmentation, weight conversion, 3D laser scanning, and CT reconstruction and precision. This article aims to review the development of various methods used to measure root surface area and their advantages, disadvantages, and potential clinical applications