Journal of Oral Tissue Engineering

ORIGINAL ARTICLE
Thin Carbonate Apatite Layer Deposited on Titanium using Molecular Precursor Method

Tohru HAYAKAWA1, Kenichi TAKAHASHI2, Masao YOSHINARI3, Hiroki HARA4, Mitsunobu SATO4 and Kimiya NEMOTO1

1Department of Dental Biomaterials, Research Institute or Oral Science, Nihon University School of Dentistry at Matsudo, Japan
2Department of Dental Materials, Nihon University Graduate School of Dentistry at Matsudo, Japan
3Department of Dental Materials Science and Oral Health Science Center, Tokyo Dental College, Japan
4Coordination Engineering Laboratory, Faculty of Engineering, Kogakuin University, Japan


J Oral Tissue Engin 2005;3(3): 139-146

Full Text. DOI https://doi.org/10.11223/jarde.3.139

SYNOPSIS
Thin carbonate apatite was deposited onto titanium using a molecular precursor method, which is a novel technique. The molecular precursor solution was prepared by the addition of dibutylammonium diphosphate salt to an ethanol solution of Ca-EDTA complex at a Ca/P ratio=1.67. The molecular precursor solution was applied to titanium and fired at different temperatures at 600oC for 2 hr using a furnace under ordinary atmospheric conditions. The coated surface was bom-barded with argon ions for 5, 10, and 15 minutes. Crack formation on the coated surface was increased according to the prolongation of argon ion etching time. The presence of carbonate group inside the coatings was detected by Fourier transform infrared reflection-absorption spectroscopy. Carbonate group was present after 15 min etching. It is concluded that carbonate group was trapped inside the coated CA film when used with molecular precursor method.

Key words: carbonate apatite, thin film, molecular precursor method