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ISRN Dentistry
Volume 2012 (2012), Article ID 624056, 7 pages
Research Article

Hydroxyapatite Formation on a Novel Dental Cement in Human Saliva

Division of Applied Materials Science, Department of Engineering Sciences, The Ångström Laboratory, Uppsala University, P.O. Box 534, 751 21 Uppsala, Sweden

Received 28 June 2012; Accepted 30 August 2012

Academic Editors: A. Jäger, J. H. Jeng, and G. V. Kulkarni

Copyright © 2012 Johanna Engstrand et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.


Dental materials have to meet high standards regarding mechanical strength and handling properties. There is however only a limited amount of research that has been devoted to natural formation of hydroxyapatite (HA) in contact with the materials. The objective of the current investigation was to study the surface reactions occurring in human salvia on a novel dental cement. Ceramir Crown & Bridge, a bioceramic luting agent intended for permanent cementation of conventional oral prosthetics, was evaluated by immersing discs made from the cement in human saliva and phosphate buffered saline (PBS) for seven days, after which they were dried and analyzed. The analytical methods used in order to verify HA formation on the surface were grazing incidence X-ray diffraction (GI-XRD), scanning electron microscopy (SEM), and X-ray photoelectron spectroscopy (XPS). All results showed that HA was formed on the surfaces of samples stored in saliva as well as on samples stored in PBS. The possibility of a dental luting cement to promote natural formation of HA at the tooth interface increases the stability and durability of the system and could help prevent secondary caries.