Abstract
In this study, it was investigated how mixture-ratio, cement-thickness, and loading-cycle would affect retentive-force of the dental-cement by using the cyclic-load-tester. The used cyclic-load-tester is designed based on the past reference, to simulate digestion movement. The result showed that the retentive-force failed by the increase in a mixture ratio. However, the correlation between retentive-force and cement-thickness was not clear. Moreover the retentive-force was reduced with the increase in the number of the loading-cycle. It can be considered that these results obtained from this simulation are useful for evaluation of clinical phenomena.
