Distalization of the mandibular first molar with clear aligners: a 3D finite element study.

ABSTRACT:

Introduction

This study aims to analyze the impact of varying initial positions of the mandibular first molar and attachment configurations on tooth movement by finite element analysis (FEA).

Methods

A three-dimensional (3D) model was constructed, including the mandible, dentition, periodontal ligaments (PDLs), clear aligners (CAs), and attachments. The second molar was initially positioned 3.2 mm distally. Groups were defined as follows: no attachment, attachment on the second molar (second molar ATT), and attachment on the first molar (first molar ATT). In each group, the first molar's initial position relative to the second premolar varied (0 mm, 1 mm, 2 mm, and 3 mm). The displacement was extracted for result analysis.

Results

With distal movement of the first mol

SUBMITTER: Kang F 

PROVIDER: S-EPMC12657459 | biostudies-literature | 2025

REPOSITORIES: biostudies-literature