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In our laboratory, we have been study the retention of Full Cast Crown was cemented with zinc phosphate cement after temporary cementation with zinc oxide eugenol cement.In our previous report, we obtained the result regarding the retention force of cemented crowns, it's greater on specimens after temporary cementation.This time we study to know the influence of temporary cementation and to compare the retention force of crowns, on condition that the specimens was pickled in three different circumstance (temperature at 60°C dries, humidity at 100%, and distiled water). Further more, we weigh the specimens in three different circumstance. Also, vertical dimentional changes with cementation was measured.From these observations, following results were obtained.1. Regarding weight changes, the specimens was pickled in humidity at 100% and distiled water is greater than in dries.2. Regarding the vertical dimensional changes after cementation, it's greater on specimens after temporary cementation on each circumstance.3. Regarding the retention force of cemented crowns, it's greater on specimens after temporary cementation on each circumstance.

A study on the retention of cemented crowns. Part II. Influence of circumstance.