牙周膜本构模型的研究进展

牙周膜的形变与牙齿的移动联系密切,阐明两者之间的关系对于正畸治疗有很大帮助.建立牙周膜本构模型对研究牙周膜应力-应变关系有重要意义.线弹性、非线性等本构模型已被提出,但仍存在争议,主要原因是牙周膜体内、体外的实验数据不够精确.本文就牙周膜本构模型的种类,牙周膜相关体内、体外实验的进展作一综述,并进行了展望.

Research progress on constitutive model of periodontal ligament

Tooth movement causes deformation of periodontal ligament(PDL).Further studies are needed to clarify the relationship between these factors and aid in treatment of orthodontic problems.Constitutive models bear significance in studies of stress-strain behavior of PDL.Several constitutive models,such as linear elasticity constitutive model and nonlinear elasticity constitutive model,were proposed.However,these models remain controversial given the inaccuracy of relevant experimental results for PDL in vivo and in vitro.In this study,types of constitutive model and experiments of PDL are critically reviewed and prospected.