[The pathogenetic importance of the affection and of the therapy of MS-patients' teeth in comparison to those of epileptics (author's transl)].

51 MS-patients between 18 and 50 years and an equally old control group of 51 epileptics were dentally and roentgenologically investigated. Especially the fillings of amalgam were observed. This quantitative registration showed a prevailing of 18.5% among the epileptics without statistical significance. On the other hand MS patients suffered more frequently from carious teeth. Both groups are extremely unsufficiently provided with prosthesis. 85% of all MS-patients and 71.4% of all epileptics showed progressive paradontopathics. Only 4 of 40 epileptics treated with hydantoins produced a hyperplasia of their gingivas. In view of odontogenic foci the clinical and the roentgenological results could not reveal any differences between the both groups of patients. Only granulomas of the teeth were more frequent among the MS-patients. Baasch's theory of the amalgam-etiology of MS is discussed and rejected because of lack of evidence. The problem of the focus therory is generally and specially discussed, too, as a possibility causing MS. But a connection between focus and MS is not sure in spite of striking investigations. As a general result conclusions should be drawn from the bad conditions of the MS patients' teeth with regard to a better dental providing.