Response of masticatory muscles to treatment with orthodontic aligners

Loading...
Thumbnail Image
Journal Title
Journal ISSN
Volume Title
A1 Alkuperäisartikkeli tieteellisessä aikakauslehdessä
Date
2023
Major/Subject
Mcode
Degree programme
Language
en
Pages
e232198
Series
Dental Press Journal of Orthodontics, Volume 28, issue 1
Abstract
INTRODUCTION: The emergence of orthodontic aligners has provided an aesthetic and comfortable option for orthodontic treatment. However, the encapsulated design of the aligners can influence the masticatory muscles, and might compromise safe treatment. OBJECTIVE: This preliminary longitudinal study aimed to investigate whether the use of orthodontic aligners affects the biting force and myoelectric activity of the superficial masseter and anterior temporal muscles. METHODS: Ten subjects participated in the study and underwent treatment during an 8-month follow-up period. The root mean square (RMS), the median power frequency (MPF) of the surface electromyography (sEMG) signals, and the biting force (kgf) were recorded and normalized relative to the pretreatment condition. The data were analyzed by repeated-measure analysis of variance (ANOVA), with the significance level set at 5%. RESULTS: Both the superficial masseter and the anterior temporal muscles presented an increase in sEMG signal activity during thetreatment, with a marked increase in the latter compared to the former (p<0.05). Moreover, a significant decrease in bite force was evidenced (p<0.05). CONCLUSIONS: This preliminary study observed that the orthodontic aligners affected the muscle recruitment pattern of masticatory muscles, and reduced biting performance during the 8-month follow-up period.
Description
Keywords
Other note
Citation
Paes-Souza , S D A , Garcia , M A C , Souza , V H , Morais , L S , Nojima , L I & Nojima , M D C G 2023 , ' Response of masticatory muscles to treatment with orthodontic aligners : a preliminary prospective longitudinal study ' , Dental Press Journal of Orthodontics , vol. 28 , no. 1 , e232198 , pp. e232198 . https://doi.org/10.1590/2177-6709.28.1.e232198.oar