A Study of Occlusal Parafunction with Periodontitis Patients: Occlusal Analysis with K-6 Diagnostic System

This study was undertaken to know the occlusal parafunctions which may cause occlusal traumatism in periodontitis patients. Thirtyseven moderate to severe periodontitis patients and 18 healthy control subjects were used. They answered the questionnaire, received clinical occlusal examinations and MKG/EMG tests with K-6 diagnostic system. As a result, contact velocity in mouth closure was slower, and chewing strokes terminated in multipul points in patient group. These results may be contributed by the unstability of intercuspal position in periodontitis patients. In function EMG mode, patient group tended to show lower EMG level compared to control group, but no difference were found in the rest mode.