Surface Roughness of Acid-Etched and Demineralized Bovine Enamel Measured by a Laser Speckle Method
作者:
R.A.J. Groenhuis,
W.L. Jongebloed,
J.J. ten Bosch,
期刊:
Caries Research
(Karger Available online 1980)
卷期:
Volume 14,
issue 5
页码: 333-340
ISSN:0008-6568
年代: 1980
DOI:10.1159/000260472
出版商: S. Karger AG
关键词: Acid etching;Demineralization;Enamel;Laser measurements;Surface roughness
数据来源: Karger
摘要:
Bovine enamel was exposed to buffered lactic acid in hydroxyethylcellulose, hydrochloric acid or orthophosphoric acid during different periods. The resulting surface roughness was determined by a laser speckle technique, by a mechanical profilometric instrument, and from SEM stereomicrographs by applying these techniques to the same samples. The methods are compared. The results correspond reasonably well. Exposure of the enamel to hydrochloric acid or orthophosphoric acid gives a large increase of the surface roughness during the first 30 sec; further exposure gives some decrease of the roughness. Exposure to buffered lactic acid for 7 days gives hardly any change in surface roughness.
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