Electromyographic Activity of Masticatory Muscles in Asymptomatic Young Adults

Authors

Aneta Wieczorek, Jagiellonian University Medical College, Faculty of Medicine, Institute of Dentistry, Department of Prosthodontics and Orthodontics, Krakow, PolandFollow
Malgorzata Pihut, Jagiellonian University Medical College, Faculty of Medicine, Institute of Dentistry, Department of Prosthodontics and Orthodontics, Krakow, PolandFollow
Jolanta E. Loster, Jagiellonian University Medical College, Faculty of Medicine, Institute of Dentistry, Department of Prosthodontics and Orthodontics, Krakow, PolandFollow

Abstract

Introduction: The masseter and the anterior part of the temporalis are the muscles mainly responsible for the clenching function. Clenching patterns and the activity of these muscles are not expected to differ between male and females, nor between different occlusal classes. Objective: The aim of this study was to determine whether the activity index of the masseter and temporalis muscles is related to occlusal class and gender. Methods: This study involved 145 eighteen-year-old Caucasian volunteers who underwent surface electromyography. The sEMG was analyzed at the moment of 100% occlusal contact. Occlusal classes were determined used plaster casts. Results: The Class I group contained 34 males and 63 females, while Class II had 11 males and 25 females. Comparison of the AcI data showed an insignificant relation between the genders in the activity indices of Classes I and II. Significant relation between male gender and predominance of the masseter muscles, as well as between female gender and an almost equal balance between the muscles, though with a tendency towards a predominance of the temporalis anterior. Conclusion: The activity of masseter muscles during clenching the teeth is bigger in the male than in the female group. Activity index is related to gender.

References

1. Okeson JP. Management of temporomandibular disorders and occlusion. 7th ed. St. Louis: Mosby; 2013.

2. Hartstone-Rose A, Perry JM, Morrow CJ. Bite force estimation and the fiber architecture of felid masticatory muscles. Anat Rec (Hoboken). 2012; 295(8):1336-51.

3. The glossary of prosthodontic terms: Ninth Edition. J Prosthet Dent. 2017; 117(5S):e1-e105.

4. Van’t Spijker A, Kreulen CM, Bronkhorst EM, Creugers NH. Occlusal wear and occlusal condition in a convenience sample of young adults. J Dent. 2015; 43(1):72-7.

5. Wieczorek A, Czarnek M, Loster JE. Associations of electromyographic activity of anterior temporalis muscles, sex, and occlusal classes in asymptomatic young Adults. J Dent Indones. 2021; 28(1):22-6.

6. Li J, Jiang T, Feng H, Wang K, Zhang Z, Ishikawa T. The electromyographic activity of masseter and anterior temporalis during orofacial symptoms induced by experimental occlusal highspot. J Oral Rehabil. 2008; 35(2):79-87.

7. Loster JE, Osiewicz MA, Groch M, Ryniewicz W, Wieczorek A. The prevalence of TMD in Polish young adults. J Prosthodont. 2017; 26(4):284-8.

8. Osiewicz MA, Lobbezoo F, Loster BW, Wilkosz M, Naeije M, Ohrbach R. Research Diagnostic Criteria for Temporomandibular Disorders (RDC/ TMD) - The Polish version of a dual-axis system for the diagnosis of TMD. RDC/TMD Form. J Stomatol. 2013; 66:576-649.

9. Osiewicz MA, Loster JE, Wieczorek A, Loster BW. Reliability assessment of the Polish version of a questionnaire of the Research Diagnostic Criteria for Temporomandibular Disorders – Axis II. J Stomatol. 2014; 67:166-74.

10. Osiewicz MA, Loster JE, Wieczorek A, Loster BW. Reliability assessment of the examination of the sounds in the temporo mandibular joints in a polish patient population. Journal of Dentistry Indonesia 2019; 26(3):140-4.

11. Wozniak E, Loster JE, Wieczorek A. Relation between Headache and Mastication Muscle Tone in Adolescents. Pain Res Manag. 2018; 2018:7381973.

12. Sierpinska T, Jacunski P, Kuc J, Golebiewska M, Wieczorek A, Majewski S. Effect of the dental arches morphology on the masticatory muscles activities in normal occlusion young adults. Cranio. 2015; 33(2):134-41.

13. Anna S, Joanna K, Teresa S, Maria G, Aneta W. The influence of emotional state on the masticatory muscles function in the group of young healthy adults. Biomed Res Int. 2015; 2015:174013.

14. Venegas M, Valdivia J, Fresno MJ, Miralles R, Gutiérrez MF, Valenzuela S, Fuentes A. Clenching and grinding: effect on masseter and sternocleidomastoid electromyographic activity in healthy subjects. Cranio. 2009; 27(3):159-66.

15. Wieczorek A, Loster J, Loster BW. Relationship between occlusal force distribution and the activity of masseter and anterior temporalis muscles in asymptomatic young adults. Biomed Res Int. 2013; 2013:354017.

16. Wieczorek A, Loster J, Sierpinska T, Loster BW, Gołębiewska M. The correlation between activity and asymmetry indices and skeletal classes in asymptomatic young adults. Journal of Stomatol. 2013; 66:878-88.

17. Wieczorek A, Loster JE. Activity of the masticatory muscles and occlusal contacts in young adults with and without orthodontic treatment. BMC Oral Health. 2015; 15(1):116.

18. Ciavarella D, Parziale V, Mastrovincenzo M, Palazzo A, Sabatucci A, Suriano MM, Bossù M, Cazzolla AP, Lo Muzio L, Chimenti C. Condylar position indicator and T-scan system II in clinical evaluation of temporomandibular intracapsular disease. J Craniomaxillofac Surg. 2012; 40(5):449- 55.

19. Naeije M, McCarrol l RS, Weijs WA. Electromyographic activity of the human masticatory muscles during submaximal clenching in the inter-cuspal position. J Oral Rehabil. 1989; 16(1):63-70.

20. Conceição F, King MA, Yeadon MR, Lewis MG, Forrester SE. An isovelocity dynamometer method to determine monoarticular and biarticular muscle parameters. J Appl Biomech. 2012; 28(6):751-9.

Recommended Citation

Wieczorek, A., Pihut, M., & Loster, J. E. Electromyographic Activity of Masticatory Muscles in Asymptomatic Young Adults. J Dent Indones. 2022;29(2): 90-95