Indian Journal of Public Health Research & Development
  • Year: 2019
  • Volume: 10
  • Issue: 11

Comparison of Electrical Activity of Masticatory Muscles in Clinically Diagnosed Temporomandibular Joint Dysfunction

  • Author:
  • Anurag Dani1, Priyanka Debta2,, Sridhar N. Shetty3, Fakir Mohan Debta4, Manoranjan Dash5, Somalee Mahapatra6
  • Total Page Count: 6
  • Page Number: 1011 to 1016

1Professor, Department of Prosthodontics, C.D.C.R.I, Rajnandgaon, Chhattisgarh

2Professor, Department of Oral Pathology & Microbiology, Institute of Dental Sciences, Siksha ‘O’ Anusandhan (Deemed to be University), Bhubaneswar, Odisha

3Director, Center for Advanced Dento-Facial and Gnathological Science (CADSS), Mangalore, Karnataka

4Associate Professor, Department of Oral Medicine and Radiology, S.C.B. Dental College & Hospital, Cuttack, Odisha

5Associate Professor, Faculty of Management Science, Siksha O Anusandhan (Deemed to be University), Bhubaneswar

6Tutor, Department of Oral Pathology & Microbiology, Institute of Dental Sciences, Siksha ‘O’ Anusandhan (Deemed to be University), Bhubaneswar, Odisha, India

*Corresponding Author: Dr. Priyanka Debta, Associate Professor, Department of Oral Pathology & Microbiology, Institute of Dental Sciences, Siksha ‘O ’Anusandhan (Deemed to be University), Bhubaneswar, Odisha, India, e-mail: debtapriyanka@gmail.com

Online published on 27 March, 2020.

Abstract

Surface electromyography (EMG) has been found to be an effective tool to evaluate Masticatory muscle activity in order to diagnose dysfunction of masticatory apparatus.

The current study aims to indicate the practical difference between temporomandibular joint (TMJ) disorder and muscles of the jaw on symptomatic and asymptomatic subjects by comprehensive electromyography analysis.

To evaluate the significance of EMG parameters, jaw-muscles EMGs were recorded in 10 normal (Group N) subjects and 10 TMD symptomatic (group S).

In TMD symptomatic (Group S), at rest position (RP) the integrated (IEMG) was larger within anterior temporalis (Ta) whereas maximal voluntary clenching (MVC) was smaller and the masseter (Ma) and temporalis (Ta) was protruded (P).

The functional efficiency is weak and may have hypertonic activities of the jaw elevators in TMD. Following a muscle twitch, the jaw muscles in TMD become less relaxed and get easily fatigued during functional effort. TMD symptoms result in alteration of functional adaptation of jaw muscle activities and occlusion.

Keywords

Electromyography, Temporomandibular disorders, Muscle Engram, Muscle Fatigue