全部床義歯床下組織の負担圧分布に関する基礎的研究 第２報 こう合器の切歯路指導板の傾斜が負担圧分布に及ぼす影響

Abstract

When making a complete denture, the horizontal and sagittal inclination of the incisal guide plate of the semi-adjustable articulator have to be determined by denture stability and the anterior arrangement of the denture teeth.The purpose of this' study was to investigate the influence of the inclination of the incisal guide plate on the pressure distribution under a complete denture and to obtain a guideline for adjustment thereof.The results were as follows:1. When the sagittal inclination of the incisal guide plate increased, the pressure distribution under the upper and lower complete denture did not change in the centric occlusion.2. When the horizontal inclination of the incisal guide plate increased, the pressure distribution on the supporting tissue did not change remarkably.3. In one-sided occlusion, the pressure value increased as the horizontal inclination in the buccal region of the upper molar on the working side and lingual region of the lower molar increased. Reduction of pressure was observed in the palatal region of the upper molar and buccal region of the lower molar.4. In one-sided occlusion at the eccentric position, the pressure values increased as the horizontal inclination in the upper buccal region on the working side and lower lingual region increased. Reduction of pressure was seen in the palatal region and lower buccal region. These pressure changes were larger than those in one-sided occlusion at the centric position.