[EEG studies in bruxism with headache patients].

EEG-investigations before and after long-term-treatment with occlusal-splints were carried out in 36 bruxism patients suffering from unilateral headache. The results of the latter group were compared to those of 41 patients with classical migraine and to those of a healthy control-group. 20 (56%) of our patients showed pathological EEG-pattern in which focal abnormalities (39%) were dominating. After a long-term-treatment, mentioned before, there was a significant decrease of pathological EEG-pattern combined with a distinct improvement of all clinical symptoms. In patients with classical migraine a higher number of pathological EEG-recordings were seen during attack as well as during interval. Comparing the EEG-findings of bruxism after treatment to those of the healthy controls, no significant differences were found anymore.