title: Effects of resin-based temporary filling materials against dentin demineralization.
abstract: This study investigated the in vitro anti-demineralization effects of resin-based temporary filling materials containing surface prereacted glass-ionomer (S-PRG) filler on dentin. Bovine root dentin specimens with a 3×3 mm experimental surface were divided into four treatment groups: DuraSeal (DU) as a control, S-PRG filler-free temporary material (S0), material containing 10% (S10) and 20% (S20) S-PRG filler. Each material was applied to 3×2 mm of the experimental surface, and the specimens were immersed in 8% methylcellulose gel demineralization system for one week at 37˚C. Mineral profiles and integrated mineral loss (IML) of lesions induced on the surface (3×1 mm) adjacent to the materials were computed by transversal microradiography. S10 and S20 yielded thick surface layers and shallow lesion bodies, with significantly lower IML than DU and S0 (p<0.05, Tukey's test). These findings indicate that temporary filling resin-based materials containing over 10% of S-PRG filler content have anti-demineralization effects on adjacent dentin.
authors.affiliation: Department of Cariology and Restorative Dentistry, Graduate School of Dentistry, Kanagawa Dental University.
authors.forename: Toru
authors.initials: T
authors.lastname: Shiiya
authors.forename: Kiyoshi
authors.initials: K
authors.lastname: Tomiyama
authors.forename: Junko
authors.initials: J
authors.lastname: Iizuka
authors.forename: Haruhiko
authors.initials: H
authors.lastname: Hasegawa
authors.forename: Erika
authors.initials: E
authors.lastname: Kuramochi
authors.forename: Fukue
authors.initials: F
authors.lastname: Fujino
authors.forename: Katsura
authors.initials: K
authors.lastname: Ohashi
authors.forename: Tomotaro
authors.initials: T
authors.lastname: Nihei
authors.forename: Toshio
authors.initials: T
authors.lastname: Teranaka
authors.forename: Yoshiharu
authors.initials: Y
authors.lastname: Mukai
mesh_terms: D000818:Animals; D002417:Cattle; D003188:Composite Resins / Q000737:chemistry*; D003804:Dentin / Q000187:drug effects*; D005899:Glass Ionomer Cements / Q000737:chemistry*; D066298:In Vitro Techniques; D008422:Materials Testing; D013499:Surface Properties; D014089:Tooth Remineralization; D014092:Tooth Root; D055114:X-Ray Microtomography
chemical_list: D003188:Composite Resins; D005899:Glass Ionomer Cements