Mechanical Property Aspects of a Biomineral Based Dental Restorative System


Article Preview

A two component, capsule mixed dental restorative system based on a biomineral has been developed. After mixing the two components the material is to be regarded as a chemically bonded ceramic (CBC). In this work some basic mechanical properties has been evaluated and compared to high strength glass ionomer cement (GIC) and an amalgam. In addition the microstructure and fractured surfaces of the material has been investigated. The strength measurements show that the CBC material have comparable initial strength to an amalgam as measured by DTS. The flexural and the compressive strength of the fully hardened CBC material are comparable with a high strength GIC. The setting time showed to be easily adjustable and a final setting under 6 minutes can be reached. The microstructure of the CBC material shows that all components have been fully dispersed resulting in a homogenous microstructure. When looking at the fracture surface of tested DTS samples of the CBC material a “pull-out” effect was revealed originating from the fibres added to the composition to increase the strength.



Key Engineering Materials (Volumes 284-286)

Main Theme:

Edited by:

Panjian Li, Kai Zhang and Clifford W. Colwell, Jr.




J. Lööf et al., "Mechanical Property Aspects of a Biomineral Based Dental Restorative System", Key Engineering Materials, Vols. 284-286, pp. 741-744, 2005

Online since:

April 2005




[1] F.M. Lea in The chemistry of cement and concrete, (Edward Arnold (Publishers) Ltd., 1970) third edition, pp.490-527.

[2] R Morell., in Measurement Good Practice Guide No 12, National Physical Laboratory.

[3] J. Loof, H. Engqvist, K. Lindqvist, N-O. Ahnfelt, L. Hermansson: Journal of Materials Science: Materials in Medicine, Vol. 14, No. 12, (Dec 2003), pp.1033-1037. ASTM standard C 266.

[4] R. W Bryant, D. B Mahler: J. Prosthet. Dent. Vol 56 (1986), pp.243-248.

[5] A. M Iglesias, S. E Sorensen, J. M. Carter, R. A Wilko: J. Prosthet. Dent: vol 52 (1984) Iss 2, pp.194-198.

[6] Chemflex Technical Manual (DeTrey Dentsply).

[7] S. Ban, K. J Anusavice: J Dent Res Vol 69 (1990), Iss 12, pp.1791-1799.

[8] H. Engqvist, L. Kraft, K. Lindqvist, N-O. Ahnfelt and L. Hermansson: Accepted for publication in Journal of Advanced Materials.

[9] H. Engqvist, J. Loof, L. Kraft, L. Hermansson, accepted for publication in Ceramic Transactions (2004), ACS annual meeting, Indianapolis (2004).

[10] H. Engqvist, J-E. Schulz-Walz, J. Lööf, G. A. Botton, D. Mayer, M. W. Phaneuf, N-O. Ahnfelt, L. Hermansson: Biomaterials, 25 (2004), pp.2781-2787.