Impact of chronic allergic rhinitis on bite force and electromyographic activity of masseter and temporalis muscles of adult women

Natalia-Augusta-Ferreira Bordignon; Simone Regalo; Paulo-Batista de Vasconcelos; Marcos-Vinicios-Ribeiro Prandi; Takami-Hirono Hotta; Ligia-Maria-Napolitano Gonçalves; Isabela-Hallak Regalo; Selma Siéssere; Marcelo Palinkas

doi:10.4317/jced.56660

Impact of chronic allergic rhinitis on bite force and electromyographic activity of masseter and temporalis muscles of adult women

J Clin Exp Dent. 2020 May 1;12(5):e488-e493. doi: 10.4317/jced.56660. eCollection 2020 May.

Authors

Natalia-Augusta-Ferreira Bordignon¹, Simone Regalo², Paulo-Batista de Vasconcelos¹, Marcos-Vinicios-Ribeiro Prandi¹, Takami-Hirono Hotta³, Ligia-Maria-Napolitano Gonçalves⁴, Isabela-Hallak Regalo¹, Selma Siéssere², Marcelo Palinkas⁵

Affiliations

¹ MS. Department of Basic and Oral Pathology, School of Dentistry of Ribeirão Preto, University of São Paulo, Brazil.
² DDS, PhD, Professor. Department of Basic and Oral Pathology, School of Dentistry of Ribeirão Preto, University of São Paulo; National Institute and Technology - Translational Medicine (INCT.TM), São Paulo, Brazil.
³ DDS, Professor. Department of Dental Materials and Prosthodontic, Ribeirão Preto School of Dentistry, University of São Paulo, Brazil.
⁴ DDS, PhD, Professor. Department of Basic and Oral Pathology, School of Dentistry of Ribeirão Preto, University of São Paulo; Brazil.
⁵ DDS, PhD, Professor. Department of Basic and Oral Pathology, School of Dentistry of Ribeirão Preto, University of São Paulo; Faculty Anhanguera, Ribeirão Preto and National Institute and Technology - Translational Medicine (INCT.TM), São Paulo, Brazil.

Abstract

Background: The aim of this study was to analyse the stomatognathic system of adult women with chronic allergic rhinitis by means of molar bite force and electromyographic activity of the masseter and temporalis muscles.

Material and methods: A total of 26 subjects were screened and divided into two distinct groups: chronic allergic rhinitis group (n = 13) and healthy control group (n = 13). Subjects were assessed by maximal molar bite force (right and left) and normalized electromyographic activity of mandibular tasks (rest, right and left laterality, protrusion and maximal voluntary contraction). Data were submitted to Student's t test (p< .05).

Results: There was significant difference in right (p = .03) and left (p = .04) maximal molar bite force with force reduction in the chronic allergic rhinitis group. There was significant difference in normalized electromyographic activity in maximal voluntary contraction in the right (p =.01) and left (p = .01) temporalis muscles, with increased electromyographic activity in the masticatory muscles for the chronic allergic rhinitis group.

Conclusions: The results suggest that chronic allergic rhinitis in adult women promoted negative changes in the electromyographic activity of temporalis muscles in maximal voluntary contraction and maximal molar bite force. Key words:Rhinitis, occlusal force, electromyography, masticatory muscles.