臺大醫學院-牙醫學系;臺大醫學院-骨科;臺大醫學院-醫學工程學研究所;臺大醫學院-醫學系;Lin, Cheng-ChungCheng-ChungLinChen, Chien-ChihChien-ChihChenChen, Yunn-JyYunn-JyChenLu, Tung-WuTung-WuLuHong, Shih-Wun陳韻之Shih-Wun陳韻之Hong2017-06-202018-06-292017-06-202018-06-292014http://ntur.lib.ntu.edu.tw//handle/246246/279416Purpose: This study aimed to develop and evaluate experimentally an implant-based registration method for measuring three-dimensional (3D) kinematics of the mandible and dental implants in the mandible based on dental cone beam computed tomography (CBCT), modified to include fluoroscopic function. Materials and Methods: The proposed implant-based registration method was based on the registration of CBCT data of implants/bones with single-plane fluoroscopy images. Seven registration conditions that included one to three implants were evaluated experimentally for their performance in a cadaveric porcine head model. Results: The implant-based registration method was shown to have measurement errors (SD) of less than -0.2 (0.3) mm, 1.1 (2.2) mm, and 0.7 degrees (1.3 degrees) for the in-plane translation, out-of-plane translation, and all angular components, respectively, regardless of the number of implants used. The corresponding errors were reduced to less than -0.1 (0.1) mm, -0.3 (1.7) mm, and 0.5 degree (0.4 degree) when three implants were used. Conclusion: An implant-based registration method was developed to measure the 3D kinematics of the mandible/implants. With its high accuracy and reliability, the new method will be useful for measuring the 3D motion of the bones/implants for relevant applications.cone beam computed tomographyfluoroscopyimage registrationimplantkinematicsmandible