The International Journal of Oral & Maxillofacial Implants



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Int J Oral Maxillofac Implants 29 (2014), No. 4     15. July 2014
Int J Oral Maxillofac Implants 29 (2014), No. 4  (15.07.2014)

Page 798-806, doi:10.11607/jomi.3121, PubMed:25032759

A Dental Implant-Based Registration Method for Measuring Mandibular Kinematics Using Cone Beam Computed Tomography-Based Fluoroscopy
Lin, Cheng-Chung / Chen, Chien-Chih / Chen, Yunn-Jy / Lu, Tung-Wu / Hong, Shih-Wun
Purpose: 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-ofplane 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.

Keywords: cone beam computed tomography, fluoroscopy, image registration, implant, kinematics, mandible
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