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  • Title: Influence of sleep bruxism severity on masticatory efficiency: electromyographic analysis.
    Author: Palinkas M, Seidel Coscarella L, Hirono Hotta T, Bataglion C, De Luca Canto G, Corrêa de Mello E, Maria Napolitano Gonçalves L, Siéssere S, Cecilio Hallak Regalo S.
    Journal: Arch Ital Biol; 2019 Sep 30; 157(2-3):59-65. PubMed ID: 31821529.
    Abstract:
    The objective of the present study was to ascertain masticatory efficiency by evaluating electromyographic activity in the masseter and temporalis muscles in subjects with sleep bruxism of varying severity, as determined by BiteStrip. Thirty-four subjects with sleep bruxism were divided into two groups: a mild sleep bruxism group with a mean (± standard deviation) age of 31.3 ± 6.2 years (n = 15) and a severe sleep bruxism group with a mean age of 29.8 ± 7.1 years (n = 19). Full-night polysomnography (PSG) was performed in eligible subjects. The linear envelope integral was used to determine masticatory efficiency on the basis of the electromyographic signal of the masseter and temporalis muscles during habitual and non-habitual chewing. There was significantly higher (p .05) electromyographic activity in the severe bruxism group than in the mild bruxism group during both peanut chewing in the right (p = .03) and left (p = .03) temporalis muscles and raisin chewing in the right (p = .01) and left (p = .05) temporalis muscles. Furthermore, Parafilm M chewing showed similar results in the right (p = .008) and left (p = .02) temporalis muscles. These results suggested that subjects with severe sleep bruxism had lower masticatory efficiency.
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