中文摘要：

种植牙植入方向的确定是关系到种植远期成功的重要因素之一。本研究提出一种基于咬合力中心重建模型的种植定向初步设计方法。利用患者的CT数据、牙颌石膏模型数据、咬合记录数据及咬合力测量数据，构建咬合力中心平衡模型，对患者种植区域咬合力进行定量化研究，完成种植植入方向的初步设计。本方法为种植定向设计提供了重要参照标准和力学理论依据，为进一步完善现有口腔种植系统外科导向模板设计提供了新思路。以1例三单位桥缺失患者和5例单冠缺失患者为试验对象，完成了种植定向设计过程及最终种植规划。实验结果显示，近远中向和颊舌向倾角偏差都小于10°-15°的平均种植方向调整量，验证了本方法的有效性和可行性。

英文摘要：

The direction of dental implant is one of the important factors of long-term success of dental implants. This paper presents a method for the initial orientation design of dental implants based on the occlusal center recovery mechanical model. The occlusal center recovery mechanical model was established with the data from the CT of the patients, the data of the dental east models and the measured data of occlusal force. The established occlusal center recovery mechanical model was used in the quantitatively studies and to accomplish the initial orientation design. This method can provide the mechanical basis and references for the orientation design of implants, and further provide a new idea for the improvement of surgical guide of the existing implant system. This modeling and design method was applied and observed in six subjects. The results showed both the angle of mesiodistal inclination and the angle of buccolingual inclination are less than 10 - 15 degrees. Therefore, this method is feasible and effective.