ARTICULATOR-RELATED REGISTRATION AND ANALYSIS OF SAGITTAL CONDYLAR INCLINATION

摘要

The purpose of this investigation was to study sagittal condylar inclination values within a uniform sample (Angle class I occlusion) using 'articulator-related registration' and Camper's plane as a reference plane. The study was performed on a sample of 58 Angle class I subjects (mean age 25.1, SD 3.1). Measurements were performed with an ultrasonic jaw tracking device with six degrees of freedom. After a paraocclusal tray was fixed in the mouth, each subject had to make three protrusive movements and three right and left laterotrusive movements. From protrusive movements the software of the device automatically calculated the left and the right sagittal condylar inclination values used for setting of the articulator. The mean sagittal condylar inclination value was 41.0 degrees (SD 10.5) for the right joint and 40.7 degrees (SD 9.8) for the left joint. The maximum value was 65.0 degrees for the right and 68.6 degrees for the left joint, and the minimum value was 13.7 degrees for the right and 21.7 degrees for the left joint. The results of this study suggested the average articulator setting for sagittal condylar inclination for fully dentate adult subjects to be 40 degrees in relation to Camper's plane. This is especially important for the articulators that are set up in relation to Camper's plane.