Pattern of Electromyographic Activity in Mastication Muscles of Adolescents with Temporomandibular Disorder

Author(s)

Lauriti, Leandro ^[1] ; da Costa Silva, Paula Fernanda ^[1] ; Politti, Fabian ^[2] ; Biasotto-Gonzalez, Daniela Aparecida ^[3] ; Santos Fernandes, Kristianne Porta ^[3] ; Mesquita-Ferrari, Raquel Agnelli ^[3] ; Bussadori, Sandra Kalil ^[3]

Affiliation

^[1] Nove de Julho Univ UNINOVE, BR-05022001 Sao Paulo - Brazil

^[2] Nove Julho Univ UNINOVE, Phys Therapy Sect, BR-05022001 Sao Paulo - Brazil

^[3] Nove de Julho Univ UNINOVE, Masters Course Rehabil Sci, BR-05022001 Sao Paulo - Brazil

• Document type: Journal article
• Source: Journal of Physical Therapy Science; v. 25, n. 10, p. 1303-1307, OCT 2013.
• Web of Science Citations: 12

Abstract

{[}Purpose] The aim of the present study was to assess the behavior of the mean and median frequencies of the electromyography signal of the mastication muscles of adolescents with different degrees of TMD severity. {[}Subjects] Forty-two adolescents aged 14 to 18 years. {[}Methods] The adolescents were classified according to severity using the Helkimo Index. The control group consisted of 14 subjects with no signs or symptoms of TMD. Three readings were taken in during maximum intercuspation and mandibular rest, with each reading lasting 10 seconds. {[}Results] Significant differences (p=0.0001) were found in the mean frequency (Hz) between the control group (CG), mild TMD group (MG) and moderate/severe TMD group (MSG), especially during mandibular rest, for all muscles evaluated: right temporal: CG (137.5), MG (194.2), MSG (291.7); left temporal: CG (106.9), MG (200.6), MSG (294.2); right masseter: CG (155.7), MG (242.8), MSG (278.3); left masseter: CG (125.0), MG (214.6), MSG (316.7). Greater differences among groups were found under the condition of mandibular rest. Conclusions: Adolescents with TMD especially those with more severe symptoms exhibit hyperactivity of the mastication muscles. (AU)

• FAPESP's process: 10/09543-9 - Evaluation of facial morphology, occlusal contacts and electromyographic activity of masticatory muscles in teens with temporomandibular disorders
• Grantee: Sandra Kalil Bussadori
• Support Opportunities: Regular Research Grants