title: An evaluation of self-cured and visible light-cured denture base materials when used as a denture base repair material.
abstract: The aim of this study was to compare some of the physical properties of a heat-cured, a self-cured and a visible light-cured acrylic resin, and to evaluate the suitability of visible light-cured resin as a repair material for dentures made of heat-cured acrylic resin. Transverse strength, surface hardness and impact strength were determined for the three materials and the efficiencies of light-cured and self-cured resins, when used as a repair material, were evaluated by testing the transverse strength of repaired heat-cured specimens 1 hour, 1 week and 1 month after repair. The results showed that the rigidity of specimens repaired with light-cured resin improved with longer water storage. However, their transverse strength reached a maximum after one day and was reduced after 1 month. The rigidity and transverse strength of specimens repaired with self-cured resin were not influenced significantly by water storage and the transverse strength was significantly higher than the light-cured repaired specimens.
authors.affiliation: Department of Oral and Dental Science, Dental School, University of Bristol, U.K.
authors.forename: N S
authors.initials: NS
authors.lastname: Dar-Odeh
authors.forename: A
authors.initials: A
authors.lastname: Harrison
authors.forename: O
authors.initials: O
authors.lastname: Abu-Hammad
mesh_terms: D000180:Acrylic Resins / Q000737:chemistry*; D055598:Chemical Phenomena; D002627:Chemistry, Physical; D003764:Dental Materials / Q000737:chemistry*; D003819:Denture Bases; D003780:Denture Repair; D004548:Elasticity; D005069:Evaluation Studies as Topic; D006244:Hardness; D006358:Hot Temperature; D007101:Immersion; D008027:Light; D008422:Materials Testing; D008768:Methylmethacrylates / Q000737:chemistry; D018583:Pliability; D011137:Polystyrenes / Q000737:chemistry; D013314:Stress, Mechanical; D013997:Time Factors; D014867:Water
chemical_list: D000180:Acrylic Resins; D003764:Dental Materials; D008768:Methylmethacrylates; D011137:Polystyrenes; D014867:Water; C060386:Triad resin; C032043:styrene-methylmethacrylate copolymer; C029883:Trevalon universal