Sleep bruxism and myofascial temporomandibular disorders: A laboratory-based polysomnographic investigation

摘要: ABSTRACT Background Many dentists believe that sleep bruxism (SB) is a pathogenic factor in myofascial temporomandibular disorder (TMD), but almost all supportive data rely on patients' self-reports rather than direct observation. Methods The authors administered structured self-report interview to determine whether large and well-characterized sample of patients with TMD (124 women) experienced SB more often did matched control participants (46 women). then used from two-night laboratory-based polysomnographic (PSG) study the case exhibited participants. Results results independent t tests χ 2 analyses showed that, although self-reported rates were significantly higher (55.3 percent) (15.2 percent), PSG-based measures much lower statistically similar two groups (9.7 percent 10.9 percent, respectively). Grinding noises common both (59.7 (78.3 percent). Conclusions Most not exhibit SB, belief sufficient explanation for should be abandoned. Clinical Implications Although other reasons consider treating may exist, misplaced concern about SB's sustaining or exacerbating chronic condition justify treatment.