The purpose of this study was to investigate the change of occlusal contact area, occlusal pressure and occlusal force through the growth. Dental Prescale^® were used for measurment.
All students were undergone dental examination and questionnaires about the episode of TMJ and orthodontics. The numbur of materials were 173 (male 85 and female 88, 12-18 years old) who had individual normal occlusion. The training to bite the sheet for measurment was done beforehand. The results were as follows ; Occlusal contact area and occlusal force were on the increase with growth. In male, the increasing of them were in harmony, but there was difference between the starts of increasing of them in female. Occlusal pressure were on the decrease with growth.
From these results, it suggests that there is sex difference between the style of teeth erupting and the growth of masticatory system included muscle.