Numerical Method for the Design of Healing Chamber in Additive-Manufactured Dental Implants.
Numerical Method for the Design of Healing Chamber in Additive-Manufactured Dental Implants.
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DOI：
10.1155/2017/1970680
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发表时间：
2017
影响因子：
--
通讯作者：
Tsou NT
中科院分区：
文献类型：
--
作者：
Lee HC;Tsai PI;Huang CC;Chen SY;Chao CG;Tsou NT
在牙科植入物中包含一个治疗室已被证明可以促进生物愈合。本文提出了一种新的用于添加剂制造的牙种植体愈合室设计的数值方法。本研究开发了一种模拟骨生长的算法，并利用有限元分析软件Ansys中的有限元方法来辅助设计具有高度复杂结构的愈合室。然后，该模型被应用于牙种植体的设计，以插入上颌后骨。采用两种ITI®实心圆柱形螺纹式种植体作为初始设计，并以此来评估所提出的系统。这导致了几种治愈室的配置，然后根据相应的健康周围骨骼的体积分数进行评估。其中最好的植入物产生了一个愈合腔，周围环绕着大约9.2%的健康骨骼，比最初的设计多出9.2%。优化设计使骨与种植体的接触面积增加了约52.9%，有望对骨结合产生显著影响。所提出的方法是高效的，通常在普通个人计算机上在3-5天内完成每个植入物的优化。它也足够通用，以允许扩展到各种加载条件。
The inclusion of a healing chamber in dental implants has been shown to promote biological healing. In this paper, a novel numerical approach to the design of the healing chamber for additive-manufactured dental implants is proposed. This study developed an algorithm for the modeling of bone growth and employed finite element method in ANSYS to facilitate the design of healing chambers with a highly complex configuration. The model was then applied to the design of dental implants for insertion into the posterior maxillary bones. Two types of ITI® solid cylindrical screwed implant with extra rectangular-shaped healing chamber as an initial design are adopted, with which to evaluate the proposed system. This resulted in several configurations for the healing chamber, which were then evaluated based on the corresponding volume fraction of healthy surrounding bone. The best of these implants resulted in a healing chamber surrounded by around 9.2% more healthy bone than that obtained from the original design. The optimal design increased the contact area between the bone and implant by around 52.9%, which is expected to have a significant effect on osseointegration. The proposed approach is highly efficient which typically completes the optimization of each implant within 3–5 days on an ordinary personal computer. It is also sufficiently general to permit extension to various loading conditions.