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Clinical Study | Publishing Language: Chinese | Open Access

The change of electromyographic activity of digastrics anterior before and after the RW-splint treatment of Angle class Ⅱ malocclusion patients with temporomandibular disorders

hui XIAO, Cong-hua LIU( ), Jun-feng LIU
Department of Orthodontics, Guangdong Provincial Stomatological Hospital & the Affiliated Stomatological Hospital of Southern Medical University, Guangzhou 510280, China
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Abstract

Objective

The investigate the change of the electromyographic activity about digastrics anterior after RW-splint treatment for one week and two monthsin order to offer the theoretic basis for class Ⅱ malocclusion deformity patients with temporomandibular disorders (temporomandibular, disorders, TMD).

Methods

After wearing RW-splint successfully, the electromyographic activities of diagastric anterior before and 1 weeks, 2 months after RW-splint treatment were detected by EMG Ⅱ type surface EMG measuring instrument with BioPAK system.

Results

There was no statistically difference exist (P ＞ 0. 05) in the EMG records of digastric anterior muscle during swallowing position after one week's RW-splint treatment. After 2 months treatment compared with pre-treatment, EMG records of digastric anterior muscle during swallowing position were decreased respectively, which showed remarkable significance (P ＜ 0. 05). However, after 1 week, 2 months treatment compared with pre-treatment, EMG records of digastric anterior during MMP, which showed no statistically signifcant difference (P ＞ 0. 05).

Conclusion

Extension time of RW-splint worn can change the electromyographic activity of digastrics anterior.

Keywords

Temporomandibular disordersDigastrics anteriorElectromyographySwallowing positionRW-splint
CLC number: R783.5 Document code: A Article ID: 2096-1456(2016)03-154-04

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Journal of Prevention and Treatment for Stomatological Diseases
Volume 24 Issue 3,
March 2016
Pages 154-157
DOI: 10.12016/j.issn.2096-1456.2016.03.006

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XIAO h, LIU C-h, LIU J-f. The change of electromyographic activity of digastrics anterior before and after the RW-splint treatment of Angle class Ⅱ malocclusion patients with temporomandibular disorders. Journal of Prevention and Treatment for Stomatological Diseases, 2016, 24(3): 154-157. https://doi.org/10.12016/j.issn.2096-1456.2016.03.006

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Received: 24 July 2015
Revised: 29 September 2025
Published: 20 March 2016
© 2016 by Editorial Department of Journal of Prevention and Treatment for Stomatological Diseases

This article is licensed under a Creative Commons Attribution 4.0 International License.