关键词: 上颌扩弓, 有限元分析, 生物力学, 口腔正畸

Abstract: Maxillary expansion is one of the most vital treatment regimens for treating maxillary transverse deficiency and harmonizing the relationship between the upper and lower jaws. Finite element analysis is a practical and efficient digital biomechanical analysis method to study maxillary expansion. The way to obtain the least dental effect and the most bony effect during maxillary expansion is a research hotspot in the field of orthodontics. This paper reviews the research progress in finite element analysis of orthodontic maxillary expansion，and discusses the stress changes of maxilla and the trend of tooth movement in different maxillary expansion methods，so as to provide reference for clinical application.

Key words: maxillary expansion, finite element analysis, biomechanics, orthodontic