title: Dimensional stability of acrylic resin materials after microwave sterilization.
abstract: Microwave sterilization techniques have previously been discussed in the literature, but there is need for information regarding the stability of acrylic resins subjected to these techniques. The purpose of this investigation was to measure and determine the potential influence of microwave sterilization on the dimensional stability of polymerized acrylic resin denture base materials. Uniform samples of previously heat-polymerized, autopolymerized, and visible-light-polymerized acrylic resins were measured for changes in weight and length before and after microwave exposure. All three acrylic resin materials maintained excellent stability; all materials had shrinkage values in the range of 0.02% to 0.03%. This is clinically insignificant compared to polymerization shrinkage, which averages 0.2%.
authors.affiliation: MCV School of Dentistry, Virginia Commonwealth University.
authors.forename: D R
authors.initials: DR
authors.lastname: Burns
authors.forename: A
authors.initials: A
authors.lastname: Kazanoglu
authors.forename: P C
authors.initials: PC
authors.lastname: Moon
authors.forename: J C
authors.initials: JC
authors.lastname: Gunsolley
mesh_terms: D000180:Acrylic Resins / Q000737:chemistry*; D000704:Analysis of Variance; D008872:Microwaves / Q000009:adverse effects*; D013242:Sterilization
chemical_list: D000180:Acrylic Resins