• Daniele Manfredini, Adolfo Bandettini di Poggio, Mario Romagnoli, Liliana Dell'Osso, and Mario Bosco.
• Section of Prosthetic Dentistry, Department of Neuroscience, University of Pisa, Italy. daniele.manfredini@tin.it
• Cranio. 2004 Jul 1;22(3):234-40.

AbstractThe purpose of this study was to investigate for difference in the prevalence of mood disorders between patients with different painful temporomandibular disorders (TMD). After a sample size necessary for the study was calculated, 60 patients with a painful TMD were selected and divided into the following groups: myofascial pain (n=20), temporomandibular joint (TMJ) pain (n=18), combined myofascial and TMJ pain (n=22). Two distinct comparison groups were selected: subjects with a nonpainful TMD (n=25) and TMD-free subjects (n=29). All participants filled out a self-report validated instrument (MOODS-SR) to evaluate psychopathological symptoms related to mood disturbances. A one-way analysis of variance (ANOVA) with Bonferroni's post hoc test for multiple comparisons was performed to investigate for significant differences among the groups. The three groups of patients with painful TMD scored significantly higher than comparison groups in all MOODS-SR domains investigating depression, but no difference was shown between subjects with myofascial pain and those with TMJ pain. No significant differences among the groups emerged for the presence of manic symptoms, indicating that depressive disorders associated with TMD are not an expression of a more complex manic depressive illness. The study concluded that the presence of depressive symptoms in TMD patients seems to be related to the presence of a painful condition and seems to be unrelated to the location of pain. Furthermore, depressive disturbances in painful TMD patients affect the whole spectrum of depressive psychopathology.

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