CLINICAL ACCURACY OF PETG CLEAR ALIGNER MATERIAL

Abstract

This study aimed to evaluate the clinical accuracy of clear aligners fabricated from Polyethylene Terephthalate Glycol (PETG) material by assessing changes in dental arch dimensions using Geomagic Control X software. A total of 24 dental arches were included in the study. All participants were treated with PETG-based Smartee® clear aligners in cases involving arch expansion. Arch dimensions were measured: Anterior Arch Width (AAW), Posterior Arch Width (PAW) and Arch Height (AH). Statistical comparisons were performed using a paired-sample t-test to evaluate the differences between the planned tooth movement (TP-T0) and the actual treatment outcome (T1-T0). The results showed that the clinical accuracy of Anterior Arch Width (AAW) was the lowest among the measured variables, with an accuracy of 62.80%. Arch Height (AH) demonstrated the highest accuracy, reaching 69.89%. Overall, the clinical accuracy based on dental arch dimension measurements ranged from 62.80% to 69.89%.

Keywords: Multilayer Thermoplastic Clear Aligners, Polyethylene Terephthalate Glycol (PETG), Clinical Accuracy