Dental Materials Journal
Online ISSN : 1881-1361
Print ISSN : 0287-4547
ISSN-L : 0287-4547
Original Paper
Ultrasonic investigation of the effect of S-PRG filler-containing coating material on bovine tooth demineralization
Ryosuke MURAYAMATetsuya FURUICHIMiho YOKOKAWAFuminori TAKAHASHIRyo KAWAMOTOToshiki TAKAMIZAWAHiroyasu KUROKAWAMasashi MIYAZAKI
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2012 Volume 31 Issue 6 Pages 954-959

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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.

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© 2012 The Japanese Society for Dental Materials and Devices
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