A Novel Biomineral Water Based Dental Cement


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The area of cements in dentistry is steadily growing with the introduction of new systems that need to be cemented to the tooth, e.g. new inlays and crowns. With the better properties of the implants there is a need for new cements with high bond strength, good esthetic and mechanical properties. The bioactive minerals have not been explored as dental cement. This paper investigates the strength, setting time and film thickness of a novel dental cement based on the biomineral Marokite (calcium aluminate) as bonding system. The reactive Marokite powder is mixed with glass filler (ratio of 1.9 by volume) and water (ratio of 0.4 by weight) to a paste, which hardens within 6 minutes and has a working time of 2 minutes. The compressive strength reaches 143 MPa after 24 hours and the flexural strength almost 40 MPa. When the film thickness is measured at the end of the working time it is about 50 µm. Compared to glass ionomer cement (Fuji Cem) and zinc phosphate cement (Harvad) the biomineral system has higher strength and comparable setting time and film thickness. The investigation shows that it is feasible to develop dental cements based on biominerals, in this case a Marokite based material. The cement complies with the given standards.



Key Engineering Materials (Volumes 284-286)

Main Theme:

Edited by:

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




H. Engqvist et al., "A Novel Biomineral Water Based Dental Cement", Key Engineering Materials, Vols. 284-286, pp. 145-148, 2005

Online since:

April 2005




[1] Hench LL, West JK, Biological applications of bioactive glasses, Life Chem Reports, 13 (1996) 187-241.

[2] Octacalcium phosphate, Monographs in Oral Science Edited by Chow and Eanes, Vol. 18 (2001).

[3] J. Loof, H. Engqvist, K. Lindqvist, N-O. Ahnfelt, L. Hermansson, Mechanical properties of a permanent dental restorative material based on calcium aluminate, Journal of Materials Science: Materials in Medicine, Vol. 14, No. 12, (Dec 2003), 1033-1037.

DOI: https://doi.org/10.1023/b:jmsm.0000003999.52349.0d

[4] H. Engqvist, J-E. Schulz-Walz, J. Lööf, G. A. Botton, D. Mayer, M. W. Phaneuf, N-O. Ahnfelt, L. Hermansson: Chemical and biological integration of a mouldable bioactive ceramic material capable of forming Apatite in vivo in teeth, Biomaterials, 25 (2004).

DOI: https://doi.org/10.1016/j.biomaterials.2003.09.053

[5] K. Scrivener, A. Capmas, Calcium Aluminate Cements, Lea's Chemistry of Cement and Concrete. Edited by P.C. Hewlett, Arnold (1998).

DOI: https://doi.org/10.1016/b978-075066256-7/50025-4

[6] Standard test method for time of setting of hydraulic-cement paste by Gillmore needles, C 266 - 99, American Society for testing of materials.

DOI: https://doi.org/10.1520/c0266

[7] International standard for Dental water-based cements, ISO 9917.

[8] Standard test method for Biaxial Flexure Strength (modulus of rupture) of ceramic substrates, F394-78, American Society for testing and materials.

DOI: https://doi.org/10.1520/f0394

[9] A. Piwoarczyk, B. Windmueller, A. Mahler, H. -CH. Lauer, In-vitro study of the mechanical properties of luting cements, 80´th IADR Meeting, San Diego, USA.