[The modified RPI clasp design].
The modified RPI clasp was described and compared with the conventional RPI clasp in the article. The modified RPI clasp could provide adequate retention with the minimum undercut of the most distal part of abutment tooth and gain good esthetical effect. The I bar tip would disengage from the tooth and reduce or avoid torsional forces transmitted to the abutment tooth when rotation of distal-extension base occurred around the mesio-occlusal rest. Therefore, it is a new type of clasp design for the distal-extension removable partial dentures.
Xiao
M
M
College of Stomatology, West China University of Medical Sciences, China.
D016734:Dental Clasps; D017267:Dental Prosthesis Design; D017268:Dental Prosthesis Retention; D003832:Denture, Partial, Removable