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Interfacial properties of three different bioactive dentine substitutes

Interfacial properties of three different bioactive dentine substitutes

Gjorgievska, Elizabeta S., Nicholson, John W., Apostolska, Sonja M., Coleman, Nichola J., Booth, Samantha E., Slipper, Ian J. and Mladenov, Mitko I. (2013) Interfacial properties of three different bioactive dentine substitutes. Microscopy and Microanalysis, 19 (6). pp. 1450-1457. ISSN 1431-9276 (Print), 1435-8115 (Online) (doi:

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Three different bioactive materials suitable as dentine substitutes in tooth repair have been studied: glass-ionomer cement, particulate bioglass, and calcium-silicate cement. On 15 permanent human molars, Class V cavities were prepared and the bottom of each cavity was de-mineralized by an artificial caries gel. After the de-mineralization, the teeth were restored with: (1) Bioglass (R) 45S5 and ChemFil (R) Superior; (2) Biodentine (TM) and ChemFil (R) Superior; and (3) ChemFil (R) Superior for a complete repair. The teeth were stored for 6 weeks in artificial saliva, then cut in half along the longitudinal axis: the first half was imaged in a scanning electron microscope (SEM) and the other half was embedded in resin and analyzed by SEM using energy-dispersive X-ray analysis. The glass-ionomer and the bioglass underwent ion exchange with the surrounding tooth tissue, confirming their bioactivity. However, the particle size of the bioglass meant that cavity adaptation was poor. It is concluded that smaller particle size bioglasses may give more acceptable results. In contrast, both the glass-ionomer and the calcium-silicate cements performed well as dentine substitutes. The glass-ionomer showed ion exchange properties, whereas the calcium silicate gave an excellent seal resulting from its micromechanical attachment.

Item Type: Article
Additional Information: [1] Received: 19 July 2013. [2] Accepted: 29 August 2013. [3] First published online: 22 October 2013. [4] Published in print: December 2013.
Uncontrolled Keywords: interfacial properties, bioactive, dentine substitutes, glass-ionomer, bioglass, calcium silicate, ion-exchange, glass-ionomer cement
Subjects: Q Science > QD Chemistry
R Medicine > RK Dentistry
Faculty / School / Research Centre / Research Group: Faculty of Engineering & Science > School of Science (SCI)
Related URLs:
Last Modified: 20 Nov 2017 12:09

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