title: New Clasp Assembly for Distal Extension Removable Partial Dentures: The Reverse RPA Clasp.
abstract: Several clasp types are used in distal extension removable partial dentures. In some cases the terminal abutments have only distal retentive undercuts that can be occupied by bar clasps; however, bar clasps may be contraindicated with no suitable alternative. This article presents a reasonable solution by introducing a new clasp design as a modification to the well-known RPA clasp. The design includes a mesial rest, proximal plate, and buccal retentive arm arising from the rest and extending to reach the distal retentive undercut.
authors.affiliation: Department of Prosthodontics, Faculty of Dentistry, University of Kalamoon, Der Atiah, Syrian Arab Republic.
authors.forename: Mohammad Ayham
authors.initials: MA
authors.lastname: Hakkoum
mesh_terms: D000044:Dental Abutments; D016734:Dental Clasps; D003779:Denture Design; D003781:Denture Retention; D003832:Denture, Partial, Removable; D006801:Humans; D014070:Tooth
keywords: Dental clasps; denture design; denture retention; removable partial denture