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T-Scan Digital Occlusal Analysis Applications in Orthodontics: A Guide to Measuring the Dynamic Occlusion While Moving Teeth
Abstract
Orthodontic outcomes have been extensively graded to ensure optimal aesthetic and functional results. Several grading systems are used worldwide, with the most being the American Board of Orthodontics objective grading system (ABO-OGS) and the peer assessment rating (PAR). The ABO-OGS has been shown in recent orthodontic studies to highly correlate with T-Scan digital occlusion analysis parameters, where post-orthodontic patients demonstrated worse excursive movement parameters compared to non-orthodontically treated patients. Additionally, one static occlusion T-Scan parameter (the Anterior/Posterior % ratio) was correlated to the presence of significant anterior overbites and the presence of a Class II Angle Classification. As such, the Specific Aims of this chapter are to describe the T-Scan parameters of orthodontic patients treated with different techniques (fixed appliances on the buccal or lingual, and clear aligner treatment), and compare those results against the differing orthodontic grading systems. Moreover, this chapter will describe in detail how fixed appliance orthodontic therapy when combined with T-Scan digital occlusal analysis improves orthodontic treatment outcomes prior to debanding. Additionally, this chapter will illustrate how T-Scan, when used during clear aligner treatment planning, and in the refinement stages when additional aligners are often required, can markedly improve clear aligner outcomes, as well.
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