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An in vivo evaluation of clear aligners for optimal orthodontic force and movement to determine high-efficacy and periodontal-friendly aligner staging

Authors :
Yuru Wang
Jie Chen
Siwen Qin
Xue Han
Lijun Liao
Xiutian Sima
Weihua Guo
Source :
Heliyon, Vol 9, Iss 4, Pp e15317- (2023)
Publication Year :
2023
Publisher :
Elsevier, 2023.

Abstract

Objectives: To investigate the effect of aligner displacement on tooth movement and periodontal health to improve the efficiency of aligner treatment and explore the mechanism in vivo. Methods: A two-tooth site was established by a finite element (FE) model to virtually evaluate aligner staging. A randomized controlled experiment was conducted when the tooth sites in beagles were treated with fixed or aligner appliances with different movement and force, and tooth movement and internal structure were recorded during the alignment. After sacrificing five dogs, bone-periodontal ligament (PDL)-tooth specimens were removed and processed to conduct uniaxial compression and tensile tests as well as micro-CT imaging and histological analysis. Results: Three displacements of 0.25, 0.35 and 0.45 mm were obtained from FE analysis and applied in beagles. In general, aligners had poorer performance on movement compared to fixed systems in vivo, but the aligner with a staging of 0.35 mm had the highest accuracy (67.46%) (P

Details

Language :
English
ISSN :
24058440
Volume :
9
Issue :
4
Database :
Directory of Open Access Journals
Journal :
Heliyon
Publication Type :
Academic Journal
Accession number :
edsdoj.f6af1fd92a3e4907b60ebfce020b2fdd
Document Type :
article
Full Text :
https://doi.org/10.1016/j.heliyon.2023.e15317