Home Position診療姿勢が全部鋳造冠ブリッジ支台形態へ及ぼす影響について : 上顎左側臼歯部

概要

論文の詳細を見る
The abutment teeth preparation had been done by five dentists who had 2-5 five years clinical experiences. During the teeth preparation, dentists had kept home position of operator's posture. The abutment teeth preparation with full cast crowns for the maxillary left fixed prosthodontics (three-unit bridge, the abutment teeth were the second premolar and the second molar) had been done for the first molar tooth loss. The prepared teeth surfaces were measured, examined and following results were obtained. 1. The reduction of the teeth for bridges abutment showed same tendency as the single crown preparation. 2. The parallelisum of prepared abutment teeth. 1) Both abutment teeth had been inclined toward mesially on mesio-distal direction. 2) Both abutment teeth had been inclined toward buccally on bucco-lingual direction. Furthermore, highly correlation (r=0.62) had been showned between both abutment teeth. 3. The total required time for preparation was 1235.3 sec. (mean), and driving time of theair turbine occupied about 60% (740.8 sec.) of the total required time. The time for the axialsurface reduction was the longest of all, and it was occupied about 24% (291. 7 sec.) of the total required time.
日本補綴歯科学会の論文
1989-10-01