Abstract
“Occlusal Prescale” which allows immediate and direct observation of the occlusal tooth contact area and the pressure distribution between the upper and lower teeth was developed. This pressure detecting sheets is composed of two polyester sheets, and one of these sheets have a layer of microencapsulated color forming material.
In the clinical use of this “Occlusal Prescale”, it is suggested that it will be better to avoid both the possibility of the color forming material to be leaked out in the mouth and the contacts between saliva and “Occlusal Prescale”. The purpose of this study was to know the effect of wrapping the “Occlusal Prescale” with polyethylenetelephtalate on the measurring. The results obtained were as follows:
1. The material used for the wrapping was not torn in occlusion.
2. Any statistical differences could not be found between the Prescales with and without wrapping material regarding both occlusal tooth contact area and occlusal force.
3. It was not necessary to take account of the effects of saliva on the measuring.
From these results, “Occlusal Prescale” wrapped with polyethylenetelephtalate can be used in human mouth.
