Preparation of abutment teeth for removable partial dentures

Effects of Long‐Term Simulated RPD Clasp Attachment/Detachment on Retention Loss and Wear for Two Clasp Types and Three Abutment Material Surfaces

“…Retention of RPDs is accomplished by placing clasp parts into undercuts on abutment teeth. When a natural undercut cannot be located with a surveyor, it may be created artificially by crowns, a class V restoration, recontouring of enamel (dimpling or altering the height of contour), or recontouring with composite resin 5–10 …”

“…When a natural undercut cannot be located with a surveyor, it may be created artificially by crowns, a class V restoration, recontouring of enamel (dimpling or altering the height of contour), or recontouring with composite resin. [5][6][7][8][9][10] The recontouring of enamel by using composite resin has provided a conservative means of modifying tooth contour to create undercuts for the retention of RPD clasps. 7 This technique provides minimal tooth destruction (a few microns during etching) as well as the advantages of ease of preparation, repair, and alteration.…”

Development of an RPD CAD system with finite element stress analysis

“…Removable partial dentures should be designed so that such movements are minimal to maximize its performance and treatment outcome, as well as to avoid overload on the supporting tissues. In the previous experimental studies, it is emphasized that dentists and dental technicians should consider appropriate designs of retainers and connectors (45–48) and the shape of residual ridges (49–52). We created two models for FEA simulation in the computer, in which the simulation of artificial tooth arrangement could be performed based on the concept that stress distribution in the residual ridge mucosa should be as uniform as possible.…”