title: Ultrasonic investigation of the effect of S-PRG filler-containing coating material on bovine tooth demineralization.
abstract: This study investigated the effect of a coating material containing S-PRG fillers on the demineralization of bovine enamel and dentin, by measuring changes in the transmitted ultrasonic velocity. Bovine enamel and dentin specimens with and without coating (n=6 for each condition) were cut into blocks, immersed in 0.1 M lactic-acid buffer solution (pH 4.75) for 10 min twice daily throughout the test period, and stored in a demineralising artificial saliva solution (pH 7.0) between treatments. The propagation time of longitudinal ultrasonic waves was measured by a pulser-receiver with a transducer. Data were evaluated using ANOVA followed by Tukey's HSD test (α=0.05). The sonic velocity decreased over time for specimens stored in demineralising solution; however, coated specimens had a significantly higher sonic velocity than those without coating. The coating material containing pre-reacted glass-ionomer fillers therefore appeared to reduce the demineralisation of enamel and dentin.
authors.affiliation: Department of Operative Dentistry, Nihon University School of Dentistry, 1-8-13, Kanda-Surugadai, Chiyoda-ku, Tokyo 101-8310, Japan.
authors.forename: Ryosuke
authors.initials: R
authors.lastname: Murayama
authors.forename: Tetsuya
authors.initials: T
authors.lastname: Furuichi
authors.forename: Miho
authors.initials: M
authors.lastname: Yokokawa
authors.forename: Fuminori
authors.initials: F
authors.lastname: Takahashi
authors.forename: Ryo
authors.initials: R
authors.lastname: Kawamoto
authors.forename: Toshiki
authors.initials: T
authors.lastname: Takamizawa
authors.forename: Hiroyasu
authors.initials: H
authors.lastname: Kurokawa
authors.forename: Masashi
authors.initials: M
authors.lastname: Miyazaki
mesh_terms: D000180:Acrylic Resins; D000818:Animals; D002021:Buffers; D002417:Cattle; D020099:Coated Materials, Biocompatible / Q000627:therapeutic use*; D003743:Dental Enamel / Q000187:drug effects; D003804:Dentin / Q000187:drug effects; D009943:Organophosphorus Compounds / Q000627:therapeutic use*; D012464:Saliva, Artificial; D012822:Silicon Dioxide; D017001:Tooth Demineralization / Q000000981:diagnostic imaging* / Q000517:prevention & control*; D014463:Ultrasonography
chemical_list: D000180:Acrylic Resins; D002021:Buffers; D020099:Coated Materials, Biocompatible; D009943:Organophosphorus Compounds; C472422:S-PPG compound; D012464:Saliva, Artificial; C015897:glass ionomer; D012822:Silicon Dioxide