摘要
正畸牙移动是通过正畸力的刺激作用引起牙周膜、牙槽骨等牙周组织发生改建而实现的。牙周膜是连接牙骨质与牙槽骨之间的纤维结缔组织,具有支持牙齿传递、吸收和分散咬合力的作用。当正畸力施加于牙齿上时,载荷通过牙周膜从牙齿传递至牙槽骨,牙周膜的改建与牙槽骨的形成和吸收交替进行且互为作用。作为正畸牙移动的始动因素,牙周膜的应力/应变参与牙槽骨的改建过程,并影响牙齿的移动速度。因此,牙周膜的生物力学特性受到广泛关注。对正畸牙移动中牙周膜的结构变化和生物力学特性以及牙周膜的力学本构模型相关研究进行综述,讨论其力学响应和生物力学机制,以期为临床正畸牙移动精确数值模拟提供理论依据。
Orthodontic tooth movement is achieved by remodeling periodontal ligament,alveolar bone and other periodontal tissues in response to mechanical loading.The periodontal ligament is the fibrous connective tissue connecting cementum and alveolar bone,which plays an important role in the transmission,absorption and dispersion of supporting teeth and biting force.When orthodontic forces are applied to the teeth,load transfer occurs from the tooth through the periodontal ligament to the alveolar bone.The remodeling of periodontal ligament interacts with the alveolar bone formation and absorption alternately.As the initial factor of orthodontic tooth movement,the stress/strain of periodontal ligament is involved in the process of alveolar bone remodeling and affects the direction and speed of tooth movement.Therefore,the biomechanical properties of the periodontal ligament have received extensive attention.In this paper,the related researches on the structural changes and biomechanical characteristics of the periodontal ligament during orthodontic tooth movement were reviewed as well as the researches on the mechanical constitutive model of the periodontal ligament.The mechanical response and biomechanical mechanism of the periodontal ligament were discussed in order to provide a theoretical basis for accurate numerical simulation of orthodontic tooth movement.
作者
连小丽
颜艳
李瑞欣
邹慧儒
Lian Xiaoli;Yan Yan;Li Ruixin;Zou Huiru(Central Laboratory of Tianjin Stomatological Hospital School of Medicine,Nankai University Tianjin Key Laboratory of Oral and Maxillofacial Function Reconstruction,Tianjin 300041,China)
出处
《国际生物医学工程杂志》
CAS
2021年第5期395-400,共6页
International Journal of Biomedical Engineering
基金
天津市卫生健康委员会科技基金面上项目(2015KY23)
天津市口腔医院博硕士重点课题项目(2015BSZD03)。
关键词
牙周膜
生物力学
正畸牙移动
本构模型
Periodontal ligament
Biomechanics
Orthodontics tooth movement
Constitutive model
作者简介
通信作者:邹慧儒,Email:zouhuiru@163.com。
