Dubrovsky B, et al. – The researchers performed this work to investigate self–reported sleep quality in temporomandibular disorder (TMD) as a function of myofascial pain, polysomnographic (PSG) parameters and depressive symptomatology. They observed that reported poor sleep quality in TMD is better described by depressive symptoms than by PSG–assessed sleep disturbances or myofascial pain. As TMD cases lacked typical PSG features of clinical depression, the outcomes suggested a negative cognitive bias in TMD and caution against interpreting self–report sleep measures as accurate indicators of PSG sleep disturbance. Future studies should take account of depressive symptomatology when interpreting reports of poor sleep.