Fluoride Release and Dentin Caries Inhibition Adjacent to resin-modified glass-ionomer Luting Cements

Daranee Tantbirojn ； Afshin Falsafi ； Sumita B. Mitra ； Ralph Delong ； William H. Douglars ； Tiffany Ton

《Journal of Dental Sciences》 24卷3期 (2005/09) Pp. 127-133

https://doi.org/10.30086/JDS.200509.0001

並列摘要

The objectives of this investigation were to compare the fluoride release and caries inhibition ability of resin-modified glass ionomer (RMGI) luting cements. Methods: Materials used for dentin caries inhibition were 3M ESPE RelyX(superscript TM) Luting Plus Cement (REP) paste-paste RMGI, RelyX(superscript TM) Luting Cement (RLC) powder-liquid RMGI and Filtek(superscript TM) Z250 composite/Adper(superscript TM) Single Bond adhesive (ZSB). Rectangular slots (6×2×1 mm) were prepared in 24 dentin blocks cut from 8 bovine roots, and filled with ZSB, RLC, and REP. The specimens were immersed in 10 ml acetic acid solution pH 5.0 (37℃, 3 wks) to create artificial dentin lesion, then sectioned into 400 μm slices and subjected to microradiography. Mineral loss (△Z) was calculated from mineral profiles at 0.5 and 1.0 mm from the material margin, and statistically analyzed (ANOVA, Fisher's, p＜0.05). Fluoride release from cured cement discs (20×1 mm; n=8) in distilled water was measured after 1, 7, 14, 28, 90, 180, and 365 day using F-specific electrode and TISAB buffer. A conventional GIC, Ketac(superscript TM) Cem, was used as a control for this experiment. Results: Z250 is not fluoridated and did not exhibit F release. The sustained F release from REP and REC were comparable to each other and higher than from the control conventional GIC. Both RMGIs showed pronounced inhibition zones in dentin adjacent to cement margin. △Z values at 0.5 mm and 1.0 mm from RLP and RLC were significantly less compared to ZSB. △Z values were not significantly different in RLP and RLC groups at 1.0 mm. Conclusion: Both the powder-liquid and paste-paste RMGIs, RelyX Luting and RelyX Luting Plus cements respectively, released comparable amounts of fluoride, and, in contrast to the composite, demonstrated inhibition zones at the adjacent dentin when subjected to in vitro demineralization. Both cements inhibited mineral loss in dentin compared to the composite up to 1.0 mm adjacent to the bonded interface.

並列關鍵字

caries inhibition ； dentin demineralization ； fluoride release ； luting cement ； resin-modified glass-ionomer