title: Retention and resistance of preparations for cast restorations.
abstract: Five preparation designs were tested for retention and resistance. Retention values for all partial veneer crowns were significantly lower than those for the complete veneer crown. Resistance values increased significantly with the addition of grooves and/or extension of axial surface coverage. Addition of grooves and/or extension of axial surface coverage produced small increases in retention values but marked increases in resistance values.
mesh_terms: D003442:Crowns; D003735:Dental Casting Technique; D003799:Dental Stress Analysis; D003779:Denture Design; D003781:Denture Retention; D003765:Models, Dental