In silico analysis and accuracy of different palatal morphologies using intraoral scanner system

With the increasing life expectancy, there is a greater demand for prosthetic rehabilitation of edentulous patients. Intraoral scanning (IOS) is useful to digitise edentulous arches and to fabricate complete dentures. The present study investigated the influence of different palatal morphologies on the accuracy of an IOS (TRIOS 4) in edentulous maxillae. Six typodonts were fabricated for different palatal morphologies with flat (F), medium (M) and deep (D) palates, and each with/without palatal wrinkles (W/S) resulting in 6 groups: WF, WM, WD and SF, SM, SD. Ten scans were carried out for each experimental group, STLs obtained were imported into a software to measure trueness and precision. Descriptive statistics and post hoc tests were conducted. For trueness, significant differences were found for SM vs SD (p