Aim: To compare the retentive ability and deformation of Acetal resin with Cobalt-Chromium clasps via Insertion Removal apparatus after subjecting them to stimulate clinical use. Materials and Methods: Materials used for this study are commercially available Cobalt-Chromium alloy namely Wironit. Bego. Germany and Acetal resin namely Biodentaplast. https://www.roneverhart.com/Sailytysastia-46x66x23-cm-49-2-L/