上顎全部床義歯床下組織の負担圧に関する基礎的研究

抄録

Through simulation method, the influences of occlusal force loading point, posterior pontics arrangement, palate thickness and denture base material on pressuredistribution over supporting tissues under maxillary complete denture were studied.
The results were the following:
1. Pressure distribution over supporting tissues showed remarkable variation according to the position of the occlusal force loading point.
2. Pressure on the buccal side of the alveolar ridgewas greater in the buccally shifted arrangement of posterior pontics than in thestandard and lingually shifted arrangements.
3. Reduced palate resin thickness below normal value increased pressure on the palate midline region.
4. For the standard and lingually shifted arrangements of posterior pontics, pressureon the incisor and palate midline regions is decreased in metal base compared toacrylic resin base. In the buccally shifted arrangement, pressure on buccal sideof the alveolar ridgeis lesser in metal base than in acrylic resin base.