Subjects
Subjects were 105 consecutive patients attending the Section of Prosthetic Dentistry,
Department of Neuroscience, University of Pisa, Italy (44% women, aged
19-34 years). Subjects needed to have all permanent teeth, except third molars.
Patients with painful temporomandibular disorders according to Research Diagnostic
Criteria for Temporomandibular Disorders (RDC/TMD), gross malocclusion,
use of medications influencing sleep or motor functions, presence of
chronic pain in other areas of the body, or the presence of rheumatic disorders
were excluded.
Exposure
Mood psychopathology identified with MOODS-SR using threshold of more
than 60 points indicating clinically meaningful symptoms. The questionnaire is
the self-reported version of the Structured Clinical Interview for Mood Spectrum
(SCI-MOODS).
Main Outcome Measure
Clinical diagnosis of bruxism (patient exhibited at least 5 nights a week grinding
bruxism sounds during sleep during the preceding 6 months, as reported
by his or her bed partner, and at least one of the following adjunctive
criteria: observation of tooth wear or shiny spots on restorations, report of
morning masticatory muscle fatigue or pain, or masseteric hypertrophy on digital
palpation).
Main Results
From the results reported in the manuscript, an odds ratio characterizing the
strength of the exposure-outcome association can be calculated. The odds of
bruxism among subjects with mood psychopathology are 4.1 times greater than
the odds of bruxism among subjects without mood psychopathology (95%
confidence interval ranging from 1.2 to 14.9, P = .008).
Conclusions
Mood psychopathology may be associated with bruxism.
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