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An investigation of dental implant biomechanical behavior using a robot simulation system.

机译：使用机器人仿真系统研究牙种植体的生物力学行为。

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摘要

In order to develop in vitro testing to measure the force transmission between dental implants and attached prostheses, this dissertation proposes a new approach involving a robot simulation system. The system has been designed to produce simulated mandibular movements and occlusal contact forces so that various implant designs and procedures can be thoroughly tested and evaluated prior to animal testing or human clinical trial. A set of noncontact displacement probes are used to measure lower jaw/implant deformations during simulated chewing. A multi-axis force/torque sensor is mounted on the end effector for measurement and feedback of overall force levels, and a system of strain gages is used to ascertain force levels transmitted by individual teeth. Quantitative and qualitative analyses of the resultant data have been performed to understand the mechanism of the force transformation between the force load and the implant-tooth combination during various chewing cycles. A theoretical model also has been established. It is found that torque in retaining screws, friction coefficient of implant material, and its geometry can have significant effects on the stability of a dental implant system. Two types of dental bridge connections, with a rigid connector and a nonrigid connector, has been constructed and used for experimental verification. A significant displacement difference in premolars are observed. This information will be useful in understanding the manner in which potentially harmful levels of force are transmitted to human bone surrounding dental implants and adjacent teeth, by providing more accurate force input data for finite element models which are under development. This investigation would provide the unique opportunity to combine robotics with dentistry to improve the oral health of patients.
机译：为了开展体外测试以测量种植体和附着假体之间的力传递，本文提出了一种新的方法，该方法涉及机器人仿真系统。该系统旨在产生模拟的下颌运动和咬合接触力，因此可以在动物测试或人类临床试验之前彻底测试和评估各种植入物的设计和程序。一组非接触式位移探头用于在模拟咀嚼过程中测量下颌/种植体的变形。多轴力/扭矩传感器安装在末端执行器上，用于测量和反馈整体力水平，应变计系统用于确定各个牙齿传递的力水平。已经对所得数据进行了定量和定性分析，以了解在各种咀嚼周期中力负载和种植体-牙齿组合之间的力转换机理。还建立了理论模型。发现固定螺钉中的扭矩，植入物材料的摩擦系数及其几何形状可对牙科植入物系统的稳定性产生重大影响。已经构造了两种类型的牙桥连接，包括刚性连接器和非刚性连接器，并用于实验验证。在前磨牙中观察到明显的位移差异。通过为正在开发的有限元模型提供更准确的力输入数据，此信息将有助于理解潜在的有害力水平传递到牙齿植入物和相邻牙齿周围的人骨的方式。这项研究将提供独特的机会，将机器人技术与牙科技术相结合，以改善患者的口腔健康。

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  • 作者

    Wang, Liqun.;

  • 作者单位

    University of Kentucky.;

  • 授予单位 University of Kentucky.;
  • 学科 Engineering Mechanical.; Health Sciences Dentistry.
  • 学位 Ph.D.
  • 年度 1997
  • 页码 206 p.
  • 总页数 206
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 机械、仪表工业;口腔科学;
  • 关键词

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