title: The effect of surface treatment of denture acrylic resin on the residual monomer content and its release into water.
abstract: The test specimens were processed by autopolymerizing poly(methylmethacrylate) (PMMA), and their surfaces were untreated, polished in a conventional manner with a rag wheel, or coated with a light-curing resin. The residual methylmethacrylate (MMA) content and its release into water from the specimens were measured with high-performance liquid chromatography. The light-curing resin coating reduced most effectively the release of residual MMA into water during a 2-day storage, but conventional polishing of the PMMA surface had a similar effect when the mean values of groups were tested by means of one-way ANOVA (p < 0.001). The residual MMA content was lowest in the test specimens coated with a light-curing resin, whereas only a slight difference was seen when the untreated and polished test specimens were compared. This study suggests that not only light-curing resin coating but also the conventional polishing of the denture PMMA reduces residual MMA release into water in vitro.
authors.affiliation: Department of Prosthetics and Stomatognathic Physiology, University of Kuopio, Finland.
authors.forename: P K
authors.initials: PK
authors.lastname: Vallittu
mesh_terms: D000704:Analysis of Variance; D002851:Chromatography, High Pressure Liquid; D003775:Dental Polishing / Q000295:instrumentation / Q000379:methods; D017220:Dentin-Bonding Agents / Q000737:chemistry; D003819:Denture Bases; D004058:Diffusion; D008027:Light; D008422:Materials Testing; D008768:Methylmethacrylates / Q000032:analysis / Q000737:chemistry*; D011108:Polymers / Q000737:chemistry; D012117:Resins, Synthetic / Q000737:chemistry; D013499:Surface Properties; D013997:Time Factors; D014867:Water
chemical_list: D017220:Dentin-Bonding Agents; D008768:Methylmethacrylates; C072648:Palaseal; D011108:Polymers; D012117:Resins, Synthetic; D014867:Water