van Staden Rudi C, Guan Hong, Johnson Newell W, Loo Yew-Chaye, Meredith Neil
School of Engineering, Griffith University, Gold Coast Campus, Gold Coast, Qld, Australia.
Clin Oral Implants Res. 2008 Mar;19(3):303-13. doi: 10.1111/j.1600-0501.2007.01427.x. Epub 2007 Dec 13.
Using the finite element method (FEM), the insertion process of a dental implant into a section of the human mandible is analysed. The ultimate aim of this article is to advance the use of an innovative engineering approach in dental practices, especially in the process of dental implantation.
The FEM and analysis techniques are used to replicate and evaluate the stress profile created within the mandible during the implantation process.
The von Mises stress profiles in both cancellous and cortical bone are examined during implant insertion. The applied torque and the insertion stage are found to strongly influence the resulting stress profile within the surrounding jawbone.
Through the combination of both dental and engineering expertise, a simplified and efficient modelling technique is developed. This improves the understanding of the biomechanical reaction that the jawbone exhibits due to the insertion of implant. The current research is a pilot study using the FEM to model and simulate the dental implantation process. The assumptions made in the modelling and simulation process are: (1) the implantation process is simulated as a step-wise process instead of a continuous process; (2) the implant is parallel threaded and the implant does not rotate during insertion into the jawbone. Although the modelling and simulation techniques had to be simplified, a significant amount of information is gained that helps lay a good foundation for future research. Recommendations for future studies include the variation of the torque applied during the implantation process and upgrading the software capabilities to simulate the full dynamical process of implantation.
采用有限元方法（FEM）分析牙科植入物植入人体下颌骨某一部位的过程。本文的最终目的是推动一种创新工程方法在牙科实践中的应用，特别是在牙种植过程中。
使用有限元方法和分析技术来复制和评估植入过程中下颌骨内产生的应力分布。
在植入物插入过程中，对松质骨和皮质骨中的冯·米塞斯应力分布进行了研究。发现施加的扭矩和插入阶段对周围颌骨内产生的应力分布有强烈影响。
通过结合牙科和工程专业知识，开发了一种简化且高效的建模技术。这增进了对颌骨因植入物插入而表现出的生物力学反应的理解。当前的研究是一项使用有限元方法对牙种植过程进行建模和模拟的初步研究。建模和模拟过程中所做的假设为：（1）将植入过程模拟为一个逐步过程而非连续过程；（2）植入物为平行螺纹，且在插入颌骨过程中植入物不旋转。尽管建模和模拟技术不得不进行简化，但仍获得了大量有助于为未来研究奠定良好基础的信息。对未来研究的建议包括改变植入过程中施加的扭矩以及升级软件功能以模拟植入的完整动态过程。
