Effect of Material, Sterilization, and Repeated Use on the Deviations of PEEK and Titanium Monoblock Scanbodies.

Abstract

<h4>Objective</h4>The study aimed to evaluate the effects of multiple sterilization cycles and repeated clinical use on the stability of monoblock titanium and PEEK scanbodies.<h4>Materials and methods</h4>Ten monoblock titanium and PEEK scanbodies were paired up, thus forming a total of ten study groups. Each pair was scanned using an intraoral scanner to record a reference scan. Study groups underwent 30 cycles of tightening, loosening and sterilization, respectively. Scanning was performed after every five cycles, resulting in six study scans per group. Linear <i>(∆X, ∆Y</i> and <i>∆Z</i>-axis), angular <i>(∆ANGLE</i>) and three-dimensional (Euclidean distance, <i>∆EUC</i>) deviations were calculated and compared using two-way ANOVA test.<h4>Results</h4>The number of repeated cycles was insignificant on scanbody deviations for both of the scanbody materials (<i>p></i>0.05). The scanbody material had a significant impact, with titanium scanbodies demonstrating significantly higher deviations in <i>∆X, ∆Z</i> and <i>∆EUC</i> compared to PEEK scanbodies (<i>p<</i>0.05).<h4>Conclusion</h4>PEEK scanbodies provided more accurate and more consistent digital scans than titanium.