fa Females with Sleep Bruxism Show Lower Theta and Alpha Electroencephalographic Activity Irrespective of Transient Morning Masticatory Muscle Pain بیماری های دهان Oral Medicine پژوهشي Research <p> <strong>Aims:</strong></p><p>  To investigate the hypothesis that the presence of transient morning masticatory muscle pain in young, healthy sleep bruxers (SBr) is associated with sex-related differences in sleep electroencephalographic (EEG) activity. </p><p> <strong>Methods</strong>: </p><p> Data on morning masticatory muscle pain and sleep variables were obtained from visual analog scales and a second night of polysomnographic recordings. Nineteen normal control (CTRL) subjects were age- and sex-matched to 62 tooth-grinding SBr. Differences in sleep macrostructure (stage distribution and duration, number of sleep-stage shifts), number of rhythmic masticatory muscle activity (RMMA) events/ hour, and EEG activity were analyzed blind to subject status. The influence of pain and gender in SBr and CTRL subjects was assessed with the Fisher's exact test, Mann-Whitney U test, two-sample t test, and analysis of variance (ANOVA). </p><p> <strong>Results:</strong></p><p>  Low-intensity morning transient orofacial pain was reported by 71% of SBr, with no sex difference. RMMA event frequency was higher in SB than CTRL subjects (4.5/hour vs 1.3/hour P < .001). SBr had fewer sleep-stage shifts, irrespective of sex or pain status. Female SBr had significantly lower theta and alpha EEG activity compared to female CTRL subjects (P = .03), irrespective of pain. </p><p> <strong>Conclusion:</strong></p><p>  Female SBr had lower theta and alpha EEG activity irrespective of transient morning pain. </p><hr><p></p><p> <strong>Source: </strong>Journal of Orofacial Pain</p><p><a href="http://jop.quintessenz.de/index.php?doc=toc&year=2013&issue=2" target="_blank"><font color="#0000ff"> Full Text</font></a></p> EEG power spectral analysis, pain, sex, sleep bruxism, theta wave activity 0 0 http://idai.ir/browse.php?a_code=A-10-32-2042&slc_lang=fa&sid=1 Susumu Abe 10031947532846009585 10031947532846009585 Yes Maria Clotilde Carra 10031947532846009586 10031947532846009586 No Nelly T. Huynh 10031947532846009587 10031947532846009587 No Pierre H. Rompré 10031947532846009588 10031947532846009588 No Gilles J. Lavigne 10031947532846009589 10031947532846009589 No