A dental implant-based registration method for measuring mandibular kinematics using cone beam computed tomography-based fluoroscopy

• Published in: The International journal of oral and maxillofacial implants Vol. 29; no. 4; p. 798
• Main Authors: Lin, Cheng-Chung, Chen, Chien-Chih, Chen, Yunn-Jy, Lu, Tung-Wu, Hong, Shih-Wun
• Format: Journal Article
• Language: English
• Published: United States 01.07.2014
• Subjects: Animals; Biomechanical Phenomena; Cadaver; Cone-Beam Computed Tomography; Dental Implants; Dental Restoration Failure; Fluoroscopy; Imaging, Three-Dimensional - methods; In Vitro Techniques; Mandible - diagnostic imaging; Mandible - physiology; Reproducibility of Results; Swine
• ISSN: 1942-4434
• DOI: 10.11607/jomi.3121

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. 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 headmodel. 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. 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.