継続歯の力学的研究 : (その3) 各種の根面形態における三次元光弾性実験

概要

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As regards the dynamic studies on dowel crowns, the solid photoelastic specimens of seven root surfaces consisted of plane, plane and slope, two planes type, these three types with pin-hole and plane type with shoulder, are made by the epoxy resin (type B) and hardner # 901 as the injection method. Three dimentional photoelastic studies are carried out what dynamic effect the differences of root surfaces and the setting up indirect retainer have on the abutment tooth. The following conclusion are obtained on various types of dowel crown from points of dynamic view. 1. Judging dynamic points of view, the root surface of two plane type is best out of various types in these studies. 2. Pin-hole and shoulder of every types as indirect retainer, are dynaminically useful because the stress distribution and concentration are decentralized and decreased by them. 3. The plane and slope type with indirect retainer is best from dynamic point of view. 4. The most clinical and rational root surface of dowel crown is the two plane type ; furthermore, it with pin-hole located at palatal side of root surface is most logical. The plane and slope type with shoulder is good.
社団法人日本補綴歯科学会の論文
1973-06-30