In order to establish a relationship between bruxism and temporomandibular disorders (TMDs), a systematic review was performed.
MATERIALS AND METHODS:
systematic research was performed based on PubMed, Cochrane Library,
Medline, Embase, BIREME, Lilacs and Scielo data bases, between 2003 and
2014 including all languages. Descriptive clinical cases were
identified. Two independent authors selected the articles. PICO format
was used to analyse the studies and the Newcastle-Ottawa Scale (NOS) was
used to verify the quality of the evidence.
studies (n = 39) were analysed in this review. According to bruxism
diagnosis, articles were grouped as follows: polysomnographic diagnosis
(PSG) (n = 7), clinical diagnosis (n = 11) and survey/self-report
(n = 21). Thirty-three articles (n = 33) established a positive relation
between bruxism and TMD and six (n = 6) did not. Quality of evidence
was low to moderate. In general, the most part of the studies showed
shortcomings on their design with bias risk, and also had a low
sensitivity on bruxism diagnosis.
evidence based on PSG was not as conclusive as the studies that used
surveys and clinical exam to diagnosis bruxism, when bruxism was related
to TMD. Sleep bruxism could be associated with myofascial pain,
arthralgia and joint pathology as disc displacement and joint noises.
Although the evidence at present is inconclusive and does not provide
information according to the type of bruxism (bruxism sleep and
wakefulness), it is possible to suggest that bruxism would be associated