The Induction Programs For Children Teeth Rearrange Based On The Finite Element

Children’s invisibility induction has been appeared in recent years, which provides a new device to guide the children’s teeth rearranged. It was favored by many children for its comfortable, beauty, convenient and efficacy, and thus gets the application and popularization in orthodontic field rapidly. However, the unique interaction relationship leads to a lack of understanding of what form the induction process force system was and how the mode acted, which restricted the comprehensive promotion of children’s invisibility induction technology in a large part. In order to provide a theoretical basis for the doctor to develop, modify and optimize the induction scheme, further study on the mechanical properties and forces system of dental tissue was conducted under the induction effect,which can provide a theoretical basis for the doctor to develop, modify and optimize the induction scheme.In this paper, the digital technology, rapid prototyping technology and finite element simulation technology were used to analyze the whole dynamic induction process combined with clinical children induction process.Firstly, children’s three-dimensional dental models were established accurately by digital technology. According to the principles of the biology of bone remodeling, the numerical model for bone remodeling mechanics simulation was proposed. Therefore, the relationship between periodontal ligament strain and tooth movement speed was obtained. By finite element analysis, the periodontal ligament strain condition under inducer can be obtained; thereby a continuous finite element model of the induction process was established. According to the analysis of the dynamic induction process of children’s teeth movement as a whole under twice continuous change of inducer, the force-system of the inducer and biomechanical conditions of the dental tissue during induction process can be obtained, which enrich and improve the understanding of the forces and mode of action during induction process.Secondly, through studying the effect of individual differences on the forces and mode of action in the induction process, we found that individual differences effect on the force system are limited, though reflected on the change of the couple mainly.Finally, through the analyses of the influence on the other teeth during children’s bodily movement induction process, we found that each tooth was assumed to the role of anchorage teeth. And the resistance transmits from the adjacent teeth of rearranged teeth to around.