A conservative approach to rebasing an implant-retained fixed complete denture.
After years of service, the acrylic resin base of an implant-retained fixed complete dental prosthesis may need to be replaced because of the wear of the acrylic resin teeth. The most common methods used by dental laboratories to remove the acrylic resin from the metal framework are either burning with a flame or grinding. Both of these methods risk exposing the dental laboratory technician to hazardous by-products and damaging or contaminating the metal framework or the gold cylinders. This article presents a safe approach to removing acrylic resin while preserving the integrity of the framework. The technique involves heating the prosthesis to beyond the glass transitional temperature of the acrylic resin to allow the resin to be safely peeled off the framework.
Clinical Associate Professor, Department of Restorative Dental Sciences, University of Florida College of Dentistry, Gainesville, Fla. Electronic address: tkerdani@dental.ufl.edu.
Tarek
T
El-Kerdani
Professor, Department of Restorative Dental Sciences, University of Florida College of Dentistry, Gainesville, Fla.
Arthur
A
Nimmo
D000180:Acrylic Resins / Q000737:chemistry; D003722:Dental Alloys / Q000737:chemistry; D003764:Dental Materials / Q000737:chemistry; D019094:Dental Prosthesis, Implant-Supported; D019554:Dental Restoration Wear; D003819:Denture Bases; D003823:Denture Rebasing / Q000379:methods*; D003781:Denture Retention / Q000295:instrumentation; D003824:Denture, Complete; D006358:Hot Temperature; D006801:Humans; D014093:Tooth, Artificial; D044366:Transition Temperature
D000180:Acrylic Resins; D003722:Dental Alloys; D003764:Dental Materials