Bibliographic Details
| Title: |
Biomechanical effects of different mandibular movements and torque compensations during mandibular advancement with clear aligners: a finite element analysis |
| Authors: |
Ya Wang, Baraa Daraqel, Ying Wang, Dan Yang, Yihan Dong, Yun Hu, Leilei Zheng |
| Source: |
Frontiers in Bioengineering and Biotechnology, Vol 12 (2024) |
| Publisher Information: |
Frontiers Media S.A., 2024. |
| Publication Year: |
2024 |
| Collection: |
LCC:Biotechnology |
| Subject Terms: |
finite element analysis, clear aligner, mandibular advancement, torque compensation, class II malocclusion, Biotechnology, TP248.13-248.65 |
| More Details: |
IntroductionThis study aimed to evaluate the biomechanical effects of different mandibular movements and torque compensations during mandibular advancement with clear aligners using finite element analysis.MethodsModels were constructed to include the mandible, teeth, periodontal ligament (PDL), and clear aligners with buccal wings. Five oral muscles (superficial masseter, deep masseter, medial temporalis, posterior temporalis, and medial pterygoid) were represented as springs. Muscle values were measured and applied during different mandibular movements, including advancement distances (1–7 mm) and occlusal opening distances (2–4 mm). Different torque compensation angles (0°, 1°, 2°, and 3°) were applied to the mandibular central incisor.ResultsWhen the mandibular advancement was equal to or slightly excessed the occlusal opening distance, stress on the posterior PDL decreased and became more evenly distributed. Increasing the occlusal opening distance significantly raised stress on the posterior PDL and caused grater labial inclination of the mandibular anterior teeth. As the torque compensation increased, the labial inclination of the mandibular central incisor decreased, but stress on the PDL increased. Nearly complete bodily movement of the lower central incisor was achieved with torque compensation angles of approximately 15°, 19°, and 20° in models M1-2, M2-3, and M3-4, respectively.ConclusionTo maintain periodontal health during mandibular advancement, it is recommended that the mandibular advancement distance be equal to or slightly excessed the occlusal opening distance. Excessive occlusal opening distance increases stress on the posterior PDL and the labial inclination of mandibular anterior teeth, requiring careful control. Additionally, proper torque control of the mandibular interior teeth is crucial for optimal outcomes. |
| Document Type: |
article |
| File Description: |
electronic resource |
| Language: |
English |
| ISSN: |
2296-4185 |
| Relation: |
https://www.frontiersin.org/articles/10.3389/fbioe.2024.1496517/full; https://doaj.org/toc/2296-4185 |
| DOI: |
10.3389/fbioe.2024.1496517 |
| Access URL: |
https://doaj.org/article/52355c99018e43db98ca67cb367ca5e0 |
| Accession Number: |
edsdoj.52355c99018e43db98ca67cb367ca5e0 |
| Database: |
Directory of Open Access Journals |
