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Title: Effect of interocclusal appliance on bite force, sleep quality, salivary cortisol levels and signs and symptoms of temporomandibular dysfunction in adults with sleep bruxism
Authors: Rosar, Joao Vicente
Barbosa, This de Souza
Villa Dias, Ilo Odilon
Kobayashi, Fernanda Yukie
Costa, Yuri Martins
Duarte Gaviao, Maria Beatriz
Bonjardim, Leonardo Rigoldi
Castelo, Paula Midori [UNIFESP]
Keywords: Bite force
Issue Date: 2017
Publisher: Pergamon-Elsevier Science Ltd
Citation: Archives Of Oral Biology. Oxford, v. 82, p. 62-70, 2017.
Abstract: Objective: The purpose was to evaluate the effect interocclusal appliance therapy on bite force (BF), sleep quality and salivary cortisol levels in adults with SB diagnosed by polysomnography. As a secondary aim, signs and symptoms of temporomandibular dysfunction (TMD) were evaluated. Design: Forty-three adults (19-30 y/o) were divided into two groups: experimental group (G(sB)), composed of 28 subjects with SB, and control group (GO, without SB and TMD (n = 15). G(SB) was treated with stabilization interocclusal splint and evaluated at time intervals: before (baseline), one month (T1) and two months (T2) after therapy began, to collect data related to BF, sleep quality (Pittsburgh Sleep Quality Index), salivary cortisol levels and TMD. G(c) was also examined three times and received no therapy. Data were analysed by means of normality tests, t-test/Mann-Whitney and One-way ANOVA repeated measures (Tukey post-test). Two-way ANOVA test for repeated measures was applied to verify the effect time*group interaction on the variance of each dependent variable (alpha = 0.05). Results: G(sg) showed an increase in BF and a positive effect on muscular symptomatology, range of mandibular movements and sleep quality
in Gc these parameters did not differ. Cortisol concentration decreased between baseline and T1 in Gsg (F-(1,F-31) = 4.46
test power = 62%
p = 0.017). The variance observed for BF, TMD and sleep quality among time points was dependent on the group (moderate effect size: partial Eta square > 0.16
test power > 80%). Conclusions: The results suggested that short-term interocclusal appliance therapy had a positive effect on BF, temporomandibular symptomatology, sleep quality and salivary cortisol levels in adults with SB.
ISSN: 0003-9969
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