Fluoride releasing and recharging of glass-ionomer in contemporary restorative-material
Objectives: The object of this study was to investigate a potential of fluoride releasing and recharging in representative restorative materials. Null hypostasis was that fluoride releasing and recharging potential of every kind of material was not different. Methods: Three contemporary restorative materials (Fuji IXGP capsule: GC Corp., Beautifil II: SHOFU Inc., CLEARFIL AP-X: Kuraray Noritake Dental Inc.) were used. To create coin shape specimen, pastes of respective materials were into a mold (12mm in diameter, 1mm in height), waited until cure (Fuji IXGP) or light-cured (Beautifil II, CLAERFIL AP-X), and were stored in 37°C chamber for 1day. Then specimens were soaked into solution (pH4.0, 5.0ml) which was adjusted with lactic acid, and the solution was daily renewed. After 7days, specimens were dipped in NaF solution (9,000ppmF, 1.0ml, 5min), and were washed (1min) in much distilled water. And then, specimens were soaked into the solution again and the lactate solution was also renewed daily. Finally, 14 "daily" solutions were acquired for one coin specimen. 6 coin specimens were prepared for each material. Therefore, 252 stocks of solution were acquired. Concentration of F- (ppm) in all solution was measured (Fluoride-ion Selective Electrode, TISAB II). Concentration of F- of day-1, -4, -7, -8, -11 and -14 were statistically analyzed (Games-Howell test). Results: In Fuji IXGP, day-8(9.7ppmF) showed statistically higher concentration than day-7(4.3ppmF). In Beautifil II, day-8(3.8ppmF) showed statistically higher concentration than day-7(1.5ppmF). In CLEARFIL AP-X, day-8(0ppmF) did not recharge fluoride ion. Conclusions: In glass-ionomer cement (Fuji IXGP) and resin composite containing with glass-ionomer filler (Beautifil II), step of soaking in 9,000ppmF solution was effective for F- recharging.
Division: Continental European and Scandinavian Divisions Meeting
Meeting:2015 Continental European and Scandinavian Divisions Meeting (Antalya, Turkey) Location: Antalya, Turkey
Year: 2015 Final Presentation ID:0528 Abstract Category|Abstract Category(s):Dental Materials 9: Other Materials - Chemistry, Properties and Performance
Authors
Kakuda, Shinichi
( Hokkaido University
, Sapporo
, Japan
)
Sun, Jihao
( Hokkaido University
, Sapporo
, Japan
)
Seitoku, Eri
( Hokkaido University
, Sapporo
, Japan
)
Okuyama, Katsushi
( Hokkaido University
, Sapporo
, Japan
)
Kawamoto, Chiharu
( Hokkaido University
, Sapporo
, Japan
)
Ikeda, Takatsumi
( Hokkaido University
, Sapporo
, Japan
)
Tanaka, Toru
( Hokkaido University
, Sapporo
, Japan
)
Selimovic, Denis
( Hokkaido University
, Sapporo
, Japan
)
Carvalho, Ricardo
( Hokkaido University
, Sapporo
, Japan
)
Sano, Hidehiko
( Hokkaido University
, Sapporo
, Japan
)
Hoshika, Shuhei
( Hokkaido University
, Sapporo
, Japan
)
Kadowaki, Yoshitaka
( Hokkaido University
, Sapporo
, Japan
)
Fukuzawa, Naoyuki
( Hokkaido University
, Sapporo
, Japan
)
Kawano, Shimpei
( Hokkaido University
, Sapporo
, Japan
)
Ting, Shihchun
( Hokkaido University
, Sapporo
, Japan
)
Katsumata, Aiichiro
( Hokkaido University
, Sapporo
, Japan
)
Chowdhury, Almas F. M.
( Hokkaido University
, Sapporo
, Japan
)
Saikaew, Pipop
( Hokkaido University
, Sapporo
, Japan
)
Financial Interest Disclosure: NONE
SESSION INFORMATION
Poster Session
Dental Materials: Glass-ionomer and other cements
Saturday,
10/17/2015
, 12:00PM - 01:00PM