Finite element analysis in defining the optimal shape and safety factor of retentive clasp arms of removable partial denture

Abstract

The BIOS concept should be used only for RCAs made of CoCrMo alloy and different wax profiles should be used for fabricating clasps of other investigated materials. The contribution of this study may be the improve ment of present systems for defining the clasps shapes made from (CoCrMo alloys. The more significant application is the possibility of creating new concepts in defining shapes of RCA made from CPTi and polyacetale.

Dimensional Optimization of Graphene-Modified Polymethyl Methacrylate Material Used as an Aesthetic Removable Partial Denture Clasp Material

“…For better retention, less clasp taper is advised but within the acceptable aesthetics. This finding matched the previous studies conducted by Peng et al 26 and Sćepanović et al 38 The current study may have some limitations. For example, not all clasps' dimensions were tested mechanically.…”

“…38,39 Previous studies showed higher stress values at the connection between the retentive clasp arm and the guiding plane, rendering it more prone to fracture. 1,24,26,38 Thus, keeping larger dimensions in that area is wise to endure stress concentrations. Although adequate tapering of the clasp tips is mandatory for metallic clasps because of their high rigidity, higher flexibility renders polymer clasps acceptable in less tapering values.…”

“…Planning of RPD retention using the current material required optimization of the clasp dimensions to be a valid RPD clasp option. 38,39 Previous studies showed higher stress values at the connection between the retentive clasp arm and the guiding plane, rendering it more prone to fracture. 1,24,26,38 Thus, keeping larger dimensions in that area is wise to endure stress concentrations.…”