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Bioceramics Development and Applications
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Research Article

Ultrathin Amorphous Calcium Phosphate Freestanding Sheet for Dentin Tubule Sealing

Nobuhiro Kato1*, Ei Yamamoto1, Arata Isai1, Hiroaki Nishikawa1, Masanobu Kusunoki1, Kazushi Yoshikawa2 and Shigeki Hontsu1

1Faculty of Biology Oriented Science and Technology, Kinki University, Kinokawa, Wakayama, 649-6493, Japan

2Department of Operative Dentistry, Osaka Dental University, Kuzuha, Osaka, 573-1121, Japan

Corresponding Author:
Nobuhiro Kato
Faculty of Biology Oriented Science and Technology
Kinki University, Kinokawa
Wakayama, 649-6493, Japan
E-mail: [email protected]

Received date: June 08, 2013; Accepted date: July 22, 2013; Published date: August 23, 2013

Citation: Kato N, Yamamoto E, Isai A, Nishikawa H, Kusunoki M, et al. (2013) Ultrathin Amorphous Calcium Phosphate Freestanding Sheet for Dentin Tubule Sealing. Bioceram Dev Appl S1:007. doi:10.4172/2090-5025.S1-007

Copyright: © 2013 Kato N, et al. This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.


Novel dentin tubule sealing technique using ultrathin Amorphous Calcium Phosphate (ACP) freestanding sheet was developed. The sheets were prepared by pulsed laser deposition technique and separated from quarts substrate by dissolving photoresist as sacrifice layer. Sheets were pasted on dentin of extracted human teeth by using calcium phosphate aqueous solution. The sheets kept wetted by artificial saliva for a few days. After drying specimens, the bonding strength between the sheets and dentin were evaluated by quasi-tensile tests. The bonding strengths between the film and dentin were enough to seal dentin tubules. After tensile test, the specimens were embedded in epoxy resin and polished for investigation of bonding boundary nature. The presence of a few microns thick bonding layer between the film and dentin was shown clearly by cross-sectional electron microgram. These results suggest that the dentin tubules may be sealed by calcium phosphate sheet without organic materials.


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