A digital approach to dynamic jaw tracking using a target tracking system and a structured-light three-dimensional scanner. Issue 1 (January 2019)

• Record Type: Journal Article
• Authors: Kwon, Joo Hyun; Im, Sungbin; Chang, Minho; Kim, Jong-Eun; Shim, June-Sung
• Is Part Of: Journal of prosthodontic research. Volume 63:Issue 1(2019)
• Page Start: 115
• Page End: 119
• Publication Date: 2019-01
• Subjects: Mandibular movement -- Target tracking -- Three-dimensional scanner -- Digital dentistry -- CAD/CAM; Prosthodontics -- Periodicals; Dentistry -- Periodicals; Prosthodontics -- Periodicals; Electronic journals; Computer network resources; 617.6905
• DOI: 10.1016/j.jpor.2018.05.001
• Languages: English
• ISSNs: 1883-1958

Abstract

Abstract: Purpose: This technical procedure describes a method for tracking mandibular movement using a three-dimensional (3D) optical scanner and target tracking system to digitally portray the motion of the mandible and temporomandibular joints by merging cone beam computed tomography (CBCT) data. Methods: Four nonreflective targets were attached to the labial surface of the incisors in a noncolinear arrangement. Mandibular movement was tracked directly using a 3D facial scanner and target tracking software after merging facial scanning data, digital data obtained from a diagnostic cast, and CBCT scan data based on several landmarks of the anterior teeth. The moving path of the subjects' mandible was converted to CBCT-based data to confirm the actual movement of the mandible and temporomandibular joints. Conclusions: The digital implementation of mandibular movement using a 3D optical scanner and target tracking system is not prone to the same restrictions and limitations inherent in mechanical equipment; therefore, it is possible to reconstruct more realistic movement(s). This technique can be used in a wide variety of dental applications involving movement of the mandibular jaw, such as fabrication of dental prostheses, or for the diagnosis and treatment of temporomandibular joint disease.