Influence of preparation features on retention and resistance. Part I: MOD onlays.
Four variations of an MOD onlay preparation were studied for retention and resistance. Boxes were more effective than an isthmus in increasing retention value. The combination of boxes and isthmus showed the highest retention. The combination of boxes and isthmus also exhibited the highest resistance. There was no difference in resistance between boxes and the isthmus.
D003442:Crowns; D003735:Dental Casting Technique / Q000295:instrumentation; D003737:Dental Cavity Preparation; D003779:Denture Design; D003781:Denture Retention; D013314:Stress, Mechanical