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Buffering or non-buffering; an action of pit-and-fissure sealants.

Authors
  • Kakuda, Shinichi1
  • Sidhu, Sharanbir K2
  • Sano, Hidehiko3
  • 1 Department of Restorative Dentistry, Division of Oral Health Science, Graduate School of Dental Medicine, Hokkaido University, Sapporo, Japan. Electronic address: [email protected] , (Japan)
  • 2 Institute of Dentistry, Barts & The London School of Medicine and Dentistry, Queen Mary University of London, London, United Kingdom. , (United Kingdom)
  • 3 Department of Restorative Dentistry, Division of Oral Health Science, Graduate School of Dental Medicine, Hokkaido University, Sapporo, Japan. , (Japan)
Type
Published Article
Journal
Journal of dentistry
Publication Date
Oct 01, 2015
Volume
43
Issue
10
Pages
1285–1289
Identifiers
DOI: 10.1016/j.jdent.2015.06.013
PMID: 26163162
Source
Medline
Keywords
Language
English
License
Unknown

Abstract

The aim of this study was to evaluate the buffering capacity of glass-ionomer material in vitro. The null hypothesis tested was that there is no effect of cured glass-ionomer pit-and-fissure sealant (PFS) pastes on the environmental acidity as well as the tooth substrate. For each material, a cured PFS disk and a section of human enamel were simultaneously soaked in lactic acid solution in a conical tube, and the pH of the solution was measured daily for one week. Subsequently, the total amount of calcium leached out in solution was also measured with ICP-AES. The results showed that the acidity of the solutions changed over time. Significant differences of calcium ion concentration in solution were observed as a result of decalcification. As the PFS products tested did not include calcium, the concentration of calcium ion released indicated acidic erosion of the tooth enamel. The glass-ionomer countered the acid of the solution rapidly and preserved the structure of human tooth enamel. Copyright © 2015 Elsevier Ltd. All rights reserved.

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