Assessment of the differences in masticatory behavior between male and female adolescents

Assessment of the differences in masticatory behavior between male and female adolescents

Author de Oliveira Scudine, Kelly Guedes Google Scholar
Pedroni-Pereira, Aline Google Scholar
Araujo, Darlle Santos Google Scholar
de Almeida Prado, Daniela Galvao Google Scholar
Rossi, Ana Claudia Google Scholar
Castelo, Paula Midori Autor UNIFESP Google Scholar
Abstract Chewing behavior may show sex differences

thus, the present study aimed to compare the masticatory aspects and the prediction of masticatory performance between male and female adolescents. Ninety-one healthy subjects (47 girls, 44 boys), caries-free and aged 14-17 years, were included. Masticatory performance and maximal bite force were evaluated using a color-changeable chewing gum and digital gnathodynamometer, respectively. Masticatory behavior was assessed by the subjective aspect of the quality of the masticatory function (validated questionnaire) and the Orofacial Myofunctional Evaluation with Scores expanded (OMES-e) was used to determine chewing time, frequency of chewing cycles and other aspects. Salivary flow rate was also assessed. The physical examination involved measurements of facial morphometry, body weight, height, skeletal muscle mass, and dental/occlusal evaluations. It was observed that boys showed larger facial dimensions, higher bite force and chewing frequency and better masticatory performance than girls. They also showed shorter chewing time, fewer chewing cycles and lower score for OMES-e (that is, more changes in orofacial myofunctional aspects). Bite force showed a weak correlation with skeletal muscle mass only in boys (r = 0.3035

p = 0.0451). The masticatory performance was dependent on the bite force in boys (Adj R-2 = 19.2%

Power = 84.1%)

among girls, Masticatory performance was dependent on the frequency of chewing cycles and masticatory behavior (subjective aspect) (Adj R-2 = 34.1%

Power = 96.1%). The findings support the existence of sex differences in many masticatory aspects of function and behavior, hence the importance of considering sex differences when evaluating masticatory function and myofunctional therapy outcomes among young subjects. (C) 2016 Elsevier Inc All rights reserved.
Keywords Mastication
Sex differences
Language English
Sponsor State of Sao Paulo Research Foundation (FAPESP, SP, Brazil) [2014/24804-4]
Grant number FAPESP:2014/24804-4
Date 2016
Published in Physiology & Behavior. Oxford, v. 163, p. 115-122, 2016.
ISSN 0031-9384 (Sherpa/Romeo, impact factor)
Publisher Pergamon-Elsevier Science Ltd
Extent 115-122
Access rights Closed access
Type Article
Web of Science ID WOS:000380597400015

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