Background: Temporary restoration materials is used when the treatment cannot be finis hed in one visi t. Such as root canal treatmen, inlay/onlay. Purpose: To know whether there are any dijferences in compressive strength and disintegration between fletcher, caviton and IRM as a control. That are stored in artificial salivafor 1 hour, 1,3,7,14 days. Method: This research a laboratoric eksperim…