Effects of upper arch expansion using clear aligners on different stride and torque: a three-dimensional finite element analysis.

ABSTRACT:

Background

During maxillary arch expansion with a clear aligner (CA), buccal tipping of the posterior teeth often occurs, resulting in an unsatisfactory arch expansion effect. The aim of this study was to analyze the appropriate maxillary arch expansion stride length and torque compensation angle for maxillary dentition to achieve an ideal moving state when a CA was used for upper arch expansion.

Methods

This study established a three-dimensional (3D) finite element model including a CA, maxilla, periodontal ligament (PDL), and maxillary dentition. The stress distribution, stress situation, expansion efficiency, and movement trends of the maxillary dentition during upper arch expansion of different stride (0.1 mm, 0.2 mm, and 0.3 mm) and torque compensation (0°, 0.5°, 1°, an

SUBMITTER: Zhang Y 

PROVIDER: S-EPMC10662809 | biostudies-literature | 2023 Nov

REPOSITORIES: biostudies-literature