Advanced Search

Journal Navigation

Journal Home

Subscriptions

Archive

Contact Us

Table of Contents

Click here to sign up for SAGE Journal Email Alerts today!

Sign In to gain access to subscriptions and/or personal tools.
Journal of Dental Research
This Article
Right arrow Full Text (PDF)
Right arrow References
Right arrow Alert me when this article is cited
Right arrow Alert me if a correction is posted
Services
Right arrow Email this article to a friend
Right arrow Similar articles in this journal
Right arrow Similar articles in PubMed
Right arrow Alert me to new issues of the journal
Right arrow Add to Saved Citations
Right arrow Download to citation manager
Right arrowRequest Permissions
Right arrow Request Reprints
Right arrow Add to My Marked Citations
Citing Articles
Right arrow Citing Articles via HighWire
Right arrow Citing Articles via Google Scholar
Right arrow Citing Articles via Scopus
Google Scholar
Right arrow Articles by Doi, Y.
Right arrow Articles by Joshin, K.
Right arrow Search for Related Content
PubMed
Right arrow PubMed Citation
Right arrow Articles by Doi, Y.
Right arrow Articles by Joshin, K.
Social Bookmarking
Add to CiteULike   Add to Complore   Add to Connotea   Add to Del.icio.us   Add to Digg   Add to Reddit   Add to Technorati   Add to Twitter  
What's this?

Carbonate Apatites from Aqueous and Non-aqueous Media Studied by ESR, IR, and X-ray Diffraction: Effect of NH4+ Ions on Crystallographic Parameters

Y. Doi

Department of Dental Technology, Osaka University Dental School, Nakanoshima, Kita-ku, Osaka 530, Japan

Y. Moriwaki

Department of Dental Technology, Gifu College of Dentistry, Takano 1851, Hozumi-cho, Gifu 501-02, Japan

T. Aoba

Department of Oral Pathology, Osaka University Dental School, Nakanoshima, Kita-ku, Osaka 530, Japan

M. Okazaki

Department of Dental Technology, Kagoshima University Dental School, Usuki-cho, Kagoshima 890, Japan

J. Takahashi

Department of Dental Technology, Kagoshima University Dental School, Usuki-cho, Kagoshima 890, Japan

K. Joshin

Department of Dental Technology, Kagoshima University Dental School, Usuki-cho, Kagoshima 890, Japan

Carbonate-containing apatites prepared from aqueous and non-aqueous media were investigated by ESR, IR, and X-ray diffraction. A typical asymmetric signal at g=2.0, which many workers have observed in irradiated calcified tissues, is interpreted in terms of CO3-3 and CO-2 and the trapped electron center. The CO3-3 and CO- 2 ions originated from the carbonate which substitutes for the phosphate ion in the apatite crystalline structure.

From the comparison of the data between the carbonate apatites prepared under the presence of Na + and NH4+ ions, it is suggested that NH 4+ ions contribute to the crystallographic parameters, either by substituting in the structure or by suppressing the CO3 incorporation into the structure, or by both. The production of the C02 radical ion could be accounted for based on the concept of hydrogen bond between the oxygen atom of CO2-3 and the hydrogen atom of NH4 +.

Journal of Dental Research, Vol. 61, No. 2, 429-434 (1982)
DOI: 10.1177/00220345820610021301
Add to CiteULike CiteULike   Add to Complore Complore   Add to Connotea Connotea   Add to Del.icio.us Del.icio.us   Add to Digg Digg   Add to Reddit Reddit   Add to Technorati Technorati   Add to Twitter Twitter    What's this?


This article has been cited by other articles:


Home page
 JDRHome page
Y. DOI. T. Koda, N. Wakamatsu, T. Goto, H. Kamemizu, Y. Moriwaki, M. Adachi, and Y. Suwa
Influence of Carbonate on Sintering of Apatites
Journal of Dental Research, September 1, 1993; 72(9): 1279 - 1284.
[Abstract] [PDF]

Home page
 JDRHome page
S. Shimoda, T. Aoba, E.C. Moreno, and Y. Miake
Effect of Solution Composition on Morphological and Structural Features of Carbonated Calcium Apatites
Journal of Dental Research, November 1, 1990; 69(11): 1731 - 1740.
[Abstract] [PDF]

Home page
 JDRHome page
R.G. Schamschula, E.I.F. Pearce, P.S.H. Un, and M.H. Cooper
Immediate and Delayed Effects of an Enzyme-dependent Mineralizing Mouthrinse on Dental Plaque
Journal of Dental Research, March 1, 1985; 64(3): 454 - 456.
[Abstract] [PDF]