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(Reference retrieved automatically from Web of Science through information on FAPESP grant and its corresponding number as mentioned in the publication by the authors.)

Influence of temporomandibular disorder on temporal and masseter muscles and occlusal contacts in adolescents: an electromyographic study

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Author(s):
Lauriti, Leandro [1] ; Motta, Lara Jansiski [1] ; Leal de Godoy, Camila Haddad [1] ; Biasotto-Gonzalez, Daniela Aparecida [1] ; Politti, Fabiano [1] ; Mesquita-Ferrari, Raquel Agnelli [1] ; Santos Fernandes, Kristianne Porta [1] ; Bussadori, Sandra Kalil [1]
Total Authors: 8
Affiliation:
[1] Univ Nove Julho UNINOVE, BR-04078012 Sao Paulo - Brazil
Total Affiliations: 1
Document type: Journal article
Source: BMC MUSCULOSKELETAL DISORDERS; v. 15, APR 10 2014.
Web of Science Citations: 9
Abstract

Background: The aim of the present study was to analyse the influence of temporomandibular disorder (TMD) on electromyographic activity in the masseter and temporal muscles of adolescents and investigate a possible association with the number of occlusal contacts. Methods: The Helkimo Index was administered for the diagnosis of TMD and classification of the adolescents into three groups: without TMD; with mild TMD; and with moderate/severe TMD. Carbon paper was used for the determination of occlusal contact points. A standardised electromyographic evaluation was performed on the masticatory muscles at rest, during habitual chewing and during maximum voluntary clenching. The readings were normalised to maximum voluntary clenching. Statistical analysis involved the chi-squared test and Fisher's exact test. The Kruskal-Wallis test and one-way analysis of variance with Dunn's post hoc test were used to compare differences between groups. Pearson's correlation coefficients (r) were calculated for the determination of correlations between the number of occlusal contacts and RMS values. Results: Electromyography revealed significant differences in the right and left masseter and temporal muscles at rest and during chewing among the three groups. These differences were not observed during maximum voluntary clenching. No statistically significant differences were found between the groups with and without TMD regarding the number of occlusal contacts. Conclusion: Electromyographic activity in the masseter and temporal muscles was greater among adolescents with moderate to severe TMD. (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