RIを用いた辺縁漏洩の観察 : 第2報全部鋳造冠の辺縁漏洩について

概要

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The purpose of this study was to observe marginal leakage of complete crowns cemented with zinc phosphate cement and adhesive cement as determined by RI. After repeating load the samples were placed in gelatine solution with ^<35>SO_4= labeled compound. 1. Most of complete crowns cemented with zinc phosphate cement showed remarlcable marginal leakage as long as the entire length of the interface. 2. Complete crowns cemented with adhesive cement showed very little marginal leakage, a maximum depth of 0.53mm from crown margins. 3. The repeating load test manifested proper position of crown margin, that is, the crown margin should be placed at least 1 mm far from the dowel core margin using adhesive cement. 4. The marginal distance of gaps was presumed from autoradiograms by using the regressive formtula calculated from the relationship between the distance of gaps and the film density in Part 1.
社団法人日本補綴歯科学会の論文
1989-12-01