 |
Publisher: Peytchinski Publishing Ltd.
ISSN: 1312-773X (Online)
Issue: 2024, vol. 30, issue2
Subject Area: Dental Medicine
-
DOI: 10.5272/jimab.2024302.5460
Published online: 03 April 2024
Case report
J of IMAB. 2024 Apr-Jun;30(2):5460-5465
EMG EVALUATION OF THE OCCLUSION WITH TEETHAN DEVICE: EFFECT OF THE MUSCLES
Vladimir Bogdanov
, Vladimir Petrunov,
Department of Orthodontics, Faculty of Dental Medicine, Medical University – Sofia, Bulgaria.
ABSTRACT:
Objectives: The aim of the study is to assess the influence of the masticatory muscles on the indices of the occlusion, measured with electromyographic (EMG) device Teethan® (Teethan S.p.A., Milan, Italy). The device is designed to assess the effect of occlusion on muscle balance and thus indirectly guides the clinician to the necessary changes in occlusion. This paper aims to determine whether muscles influence the indices characterizing occlusion.
Material and methods: Thirty-three persons aged 13-43 (mean 21.33) years, 15 men and 18 women who fulfilled the criteria, were included in the study. All subjects had a good state of dental and periodontal health and complete permanent dentition. EMG recordings of the masseter and temporalis muscles were performed during maximum voluntary teeth clenching on cotton rolls and in centric occlusion. All values were standardized as a percentage of the maximum clenching on cotton rolls.
Results: Most of the results of the test on cotton rolls are below normal reference values provided by the manufacturer. Within the normal range are only the Global index and IMPACT. When compared to MVC in centric occlusion, some of the indices were higher than when biting on cotton rolls (POC MM, BAR, Global index), which pointed out the effect of the occlusal contact on these tests.
Conclusions: The calibration of the Teethan® device gives reliable and reproducible results. Test during MVC in centric occlusion will provide information on which of the indices are influenced by occlusal factors. Recording a test MVC on cotton rolls gives valuable information for the muscle balance, excluding the influence of the occlusion.
Keywords: Teethan, calibration, standardization of EMG signals, muscular balance, occlusion,
- Download FULL TEXT /PDF 1169 KB/
Please cite this article as: Bogdanov V, Petrunov V. EMG evaluation of the occlusion with teethan device: effect of the muscles. J of IMAB. 2024 Apr-Jun;30(2):5460-5465. [Crossref - 10.5272/jimab.2024302.5460]
Correspondence to: Vladimir Bogdanov, Department of Orthodontics, Faculty of Dental Medicine, Medical University - Sofia; 1, Georgi Sofiyski Str., Sofia, Bulgaria; E-mail: vladbogdanov@yahoo.com
REFERENCES:
1. Saracutu OI, Pollis M, Cagidiaco EF, Ferrari M, Manfredini D. Repeatability of Teethan® indexes analysis of the masseter and anterior temporalis muscles during maximum clenching: a pilot study. Clin Oral Investig. 2023 Sep;27(9):5309-5316. [PubMed]
2.De Felício CM, Ferreira CL, Medeiros AP, Rodrigues Da Silva MA, Tartaglia GM, et al. Electromyographic indices, orofacial myofunctional status and temporomandibular disorders severity: A correlation study. J Electromyogr Kinesiol. 2012 Apr;22(2):266-72. [PubMed]
3.Klasser GD, Okeson JP. The clinical usefulness of surface electromyography in the diagnosis and treatment of temporomandibular disorders. J Am Dent Assoc. 2006 Jun;137(6):763-71. [PubMed]
4.Hugger S, Schindler HJ, Kordass B, Hugger A. Surface EMG of the masticatory muscles. (Part 4): Effects of occlusal splints and other treatment modalities. Int J Comput Dent. 2013;16(3):225-39. [PubMed]
5.Woźniak K, Piątkowska D, Lipski M, Mehr K. Surface electromyography in orthodontics - a literature review. Med Sci Monit. 2013 May 31;19:416-23. [PubMed]
6.Tartaglia GM, Sforza C. Functional evaluation of implant supported prostheses. Stoma Edu J. 2014; 1(1):41-47. [Internet]
7.Hermens HJ, Freriks B, Disselhorst-Klug C, Rau G. Development of recommendations for SEMG sensors and sensor placement procedures. J Electromyogr Kinesiol. 2000 Oct;10(5):361–74. [PubMed]
8.Ferrario VF, Sforza C, Colombo A, Ciusa V. An electromyographic investigation of masticatory muscles symmetry in normo-occlusion subjects. J Oral Rehabil. 2000 Jan;27(1):33-40. [PubMed]
9.Ferrario VF, Sforza C, D'Addona A, Miani A Jr. Reproducibility of electromyographic measures: a statistical analysis. J Oral Rehabil. 1991 Nov;18(6):513-21. [PubMed]
10.Jung JK, Im YG. Can the subject reliably reproduce maximum voluntary contraction of temporalis and masseter muscles in surface EMG? Cranio. 2022 Nov 5:1-10. [PubMed]
11.Tartaglia GM, Lodetti G, Paiva G, De Felicio CM, Sforza C. Surface electromyographic assessment of patients with long lasting temporomandibular joint disorder pain. J Electromyogr Kinesiol. 2011 Aug;21(4):659-64. [PubMed]
12.Ferrario VF, Tartaglia GM, Luraghi FE, Sforza C. The use of surface electromyography as a tool in differentiating temporomandibular disorders from neck disorders. Man Ther. 2007 Nov;12(4):372-9. [PubMed]
Received: 12 January 2024
Published online: 03 April 2024