Dimensional accuracy and stability of acrylic resin denture bases.
Proponents of injection molding systems have claimed a number of benefits over conventional press-pack dough molding systems. The aim of this study was to evaluate a recently developed injection (dry heat) procedure of processing compared with press-pack dough molding utilizing three curing cycles. The dimensional accuracy and stability of acrylic resin bases produced by the two molding procedures were compared. Dimensional changes were assessed over a period of 4 months using an optical comparator. The results demonstrate that baseplates produced by the injection molding procedure exhibit less shrinkage than those produced by the conventional press-pack procedures.
Huggett
R
R
Department of Prosthetic Dentistry and Dental Care of the Elderly, University of Bristol, Dental School, England.
Zissis
A
A
Harrison
A
A
Dennis
A
A
D000180:Acrylic Resins / Q000737:chemistry*; D003735:Dental Casting Technique; D003819:Denture Bases; D006358:Hot Temperature; D007101:Immersion; D007267:Injections; D008768:Methylmethacrylates / Q000737:chemistry; D011312:Pressure; D013499:Surface Properties; D014867:Water
D000180:Acrylic Resins; D008768:Methylmethacrylates; D014867:Water