关键词: 面部三维扫描, 口腔正畸, 人工智能, 数字化测量

Abstract: Facial aesthetics is an important objective of orthodontic treatment. Three-dimensional facial scanning employs scanning technology to reconstruct a three-dimensional digital model of the soft tissues of the jaw and face，having the advantages of being fast，intuitive，and accurate. This technology allows for the measurement of angles，volumes，and surface areas of the facial surface. Currently，three-dimensional facial scanning technology has been widely applied in clinical orthodontics，encompassing aspects such as digital data collection，data storage，and measurement analysis. It provides significant value in assisting orthodontic diagnosis and treatment，as well as in predicting outcomes. This article reviews the research advances in the classification of three-dimensional facial scanning technology，its application in evaluating facial soft tissues before and after orthodontic treatment，and its application combined with oral imaging technologies and artificial intelligence. The aim is to contribute to the enhancement of digital capabilities in orthodontic clinical diagnosis and treatment.

Key words: three-dimensional facial scanning, orthodontics, artificial intelligence, digital measurement