Improvements of tooth movement efficiency and torque control in expanding the arch with clear aligners: a finite element analysis.

ABSTRACT: Objectives: The purpose of this study was to analyze the effect of different movement strategies, embossment structures, and torque compensation of the aligner on tooth movement during arch expansion using clear aligners by finite element analysis. Methods: Models comprising the maxilla, dentition, periodontal ligament, and aligners were created and imported into a finite element analysis software. The tests were performed using the following: three orders of tooth movement (including alternating movement with the first premolar and first molar, whole movement with second premolar and first molar or premolars and first molar), four different shapes of embossment structures (ball, double ball, cuboid, cylinder, with 0.05, 0.1, 0.15-mm interference) and torque compensation (0°,

SUBMITTER: Yao S 

PROVIDER: S-EPMC10267454 | biostudies-literature | 2023

REPOSITORIES: biostudies-literature