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- Title
Evaluation of a calcium phosphate desensitizer using an ultrasonic device.
- Authors
Hajime ENDO; Ryo KAWAMOTO; Fuminori TAKAHASHI; Hirotaka TAKENAKA; Fumi YOSHIDA; Kie NOJIRI; Toshiki TAKAMIZAWA; Masashi MIYAZAKI
- Abstract
This study evaluated the effect of a calcium phosphate desensitizer on the demineralization of bovine dentin by measuring changes in transmitted ultrasonic velocity. Bovine dentin specimens with and without application of desensitizer were immersed in 0.1 M lactic-acid buffer solution (pH 4.75) 10 mm twice daily throughout the test period, and stored in artthcial saliva solution (pH 7.0) between treatments. The propagation time of longitudinal ultrasonic waves was measured by a pulser-receiver. Data were evaluated using one-way ANOVA followed by Tukey HSD test (α=0.05). The ultrasonic velocity decreased over time in specimens stored in demineralizing solution (3,785-3,462 mIs); however, desensitizer-applied specimens had a significantly higher sonic velocity (3,945- 3,990 m/s) than those without application. The calcium phosphate desensitizer appeared to reduce the demineralization of dentin and occluded dentinal tubules.
- Subjects
CALCIUM phosphate; ULTRASONIC equipment; TOOTH demineralization; LACTIC acid; BUFFER solutions; ARTIFICIAL saliva; ULTRASONIC waves; ANALYSIS of variance
- Publication
Dental Materials Journal, 2013, Vol 32, Issue 3, p456
- ISSN
0287-4547
- Publication type
Article
- DOI
10.4012/dmj.2012-308