Journal of Prosthodontics News
A Comparative Analysis Using an Optical Tracking Device Versus Conventional Tracking Device
Now online in the Journal of Prosthodontics, a clinical study on the use of optical tracking devices for the fabrication of occlusal appliances co-authored by ACP members Kyle Radomski, DDS, and Sang J. Lee, DMD, MMSc.
Twelve dentate participants aged over 25 years, with Angle Class I and II occlusal relationships, were enrolled. Occlusal appliances were fabricated by different condylar guidance values obtained by the three systems: an optical tracking device (OTD), a conventional tracking device (CTD), and average articulator values (AAV). Each participant received three full coverage mandibular flat plane occlusal appliances fabricated using the three different systems.
The accuracy of the systems was evaluated by accessing the clinical outcomes of the occlusal appliances. After placement, the number of contact points in maximal intercuspation position (MIP) and dynamic occlusion interferences were recorded, along with any discrepancies between designed and recorded contact points.
In assessing static occlusion, significant differences were found in contact point discrepancies at MIP. OTD exhibited the lowest mean discrepancy of contact points compared with the original design, followed by CTD and AAV, respectively. At the final protrusive position, OTD and CTD methods showed significantly lower discrepancies compared with AAV. In dynamic occlusion, OTD showed no interferences in all subjects during protrusive movement.
The authors found that the optical tracking device offers superior accuracy over traditional methods, with reduced discrepancies and interferences in occlusal appliance fabrication, signifying a substantial advancement in mandibular movement assessment and improving treatment efficiency and outcomes in clinical practice.
Cheong CW, Radomski K, Otten J, Lee SJ. A clinical comparative analysis using an optical tracking device versus conventional tracking device in the production of occlusal appliances. J Prosthodont. 2024; 1–7. https://doi.org/10.1111/jopr.13989
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