title: Effect of denture base-resin with prereacted glass-ionomer filler on dentin demineralization.
abstract: The demineralization of dentin was studied when placed adjacent to one of four experimental denture base-resins. These experimental resins contained polymethylmethacrylate (PMMA) and 0, 5, 10, 20 or 30 wt% surface reaction-type prereacted glass-ionomer (S-PRG) filler, respectively. A dentin thin-section was sandwiched between these resins and subjected to demineralization for 1 wk. Microradiographic analyses showed that the mineral vol% of the surface was increased, and lesion formation was inhibited, in a dose-response relationship with the amount of S-PRG filler. Moreover, the mineral loss decreased, by up to 60%, with an increasing amount of filler. These results indicate that denture base-resins containing S-PRG filler possess a substantial inhibition capability against demineralization, and this may thereby assist in preventing root caries of abutment teeth.
authors.affiliation: Department of Oral Medicine, Kanagawa Dental College, Yokosuka, Japan.
authors.forename: Yoshiharu
authors.initials: Y
authors.lastname: Mukai
authors.forename: Kazuko
authors.initials: K
authors.lastname: Kamijo
authors.forename: Fukue
authors.initials: F
authors.lastname: Fujino
authors.forename: Yukio
authors.initials: Y
authors.lastname: Hirata
authors.forename: Toshio
authors.initials: T
authors.lastname: Teranaka
authors.forename: Jacob M
authors.initials: JM
authors.lastname: ten Cate
mesh_terms: D000134:Acid Etching, Dental / Q000379:methods; D000818:Animals; D002417:Cattle; D003764:Dental Materials / Q000737:chemistry*; D003775:Dental Polishing; D003804:Dentin / Q000648:ultrastructure*; D017220:Dentin-Bonding Agents / Q000737:chemistry; D003819:Denture Bases; D004305:Dose-Response Relationship, Drug; D005899:Glass Ionomer Cements / Q000737:chemistry*; D008422:Materials Testing; D008852:Microradiography; D008903:Minerals / Q000032:analysis; D010756:Phosphoric Acids / Q000737:chemistry; D019904:Polymethyl Methacrylate / Q000737:chemistry*; D011897:Random Allocation; D019279:Resin Cements / Q000737:chemistry; D017001:Tooth Demineralization / Q000473:pathology* / Q000517:prevention & control
chemical_list: D003764:Dental Materials; D017220:Dentin-Bonding Agents; D005899:Glass Ionomer Cements; D008903:Minerals; D010756:Phosphoric Acids; D019279:Resin Cements; C084018:Scotchbond Multi-Purpose; D019904:Polymethyl Methacrylate; C030242:phosphoric acid