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VOLUME 7 , ISSUE 1 ( January-June, 2015 ) > List of Articles

RESEARCH ARTICLE

Comparative Evaluation of microhardness of type 2 Glass Ionomer Cement (restorative) and Zirconia based GIC - An In-Vitro Study

Prakash Lokhande

Citation Information : Lokhande P. Comparative Evaluation of microhardness of type 2 Glass Ionomer Cement (restorative) and Zirconia based GIC - An In-Vitro Study. CODS J Dent 2015; 7 (1):4-7.

DOI: 10.5005/cods-7-1-4

License: CC BY-NC-ND 3.0

Published Online: 00-06-2015

Copyright Statement:  Copyright © 2015; Jaypee Brothers Medical Publishers (P) Ltd.


Abstract

Aims

To evaluate the microhardness of type II glass-ionomer cement (GIC) (restorative) and zirconia based glass –ionomer cement.

Materials and Methods

Twenty cylindrical samples measuring 5mm (diameter) and 5mm in length were prepared with type II glass-ionomer cement that is restorative (n=10) and zirconia based glass-ionomer-cement (n=10). Finishing and polishing was made with coarse grit to fine grit. Then samples were subjected to Vickers hardness tester by using digital micro hardness tester (Zwick/Roell) under a load of 300 grams for 15 seconds. The data obtained was subjected to statistical analysis and unpaired‘t’ test was used to compare the micro hardness between two groups.

Result

Zirconia based glass-ionomer cements showed better micro hardness values as compared to that of type II glass-ionomer cement (restorative).

Conclusion

Better material with increased hardness like zirconia based GIC should be used in today's clinical practice. Further studies should be carried out to check other physical properties of zirconia based GIC.

How to cite this article

Lokhande P, Shivanna V. Comparative evaluation of micro hardness of type 2 Glass Ionomer cement (restorative) and Zirconia based GIC- An in vitro study. CODS J Dent 2015;7:4-7


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  1. Phillips’ Sciences of Dental materials 2013; 12th Edition, Elsevier, New Delhi (India) Pg. No. 63-65, 129, 246, 320-324.
  2. Sturdevant's Art and Science of Operative Dentistry, 2006; 5th edition Elsevier, New Delhi(India), Pg. No. 197, 215-220, 229.
  3. Effect of one year water storage on surface microhardness of resin-modified versus conventional glass-ionomer cements. Dent Mater 2003 May-Jun;19(4):286-290.
  4. Physiological remineralisation of artificially demineralized dentin beneath glass ionomer cements with or without bacterial contamination in vivo, Oper Dent. 2003 May-Jun;28(3):274-280.
  5. Fluoride release and uptake capacities of fluoride-releasing restorative materials. Oper Dent 2003;28(4):395-402.
  6. Microhardness of carious deciduous dentin. Oper Dent 2000 Mar-Apr;25(2):81-89.
  7. Hardness measured with traditional Vickers and Martens hardness methods. Dent Mater 2007 Sep;23(9):1079-85.
  8. Time dependency of micro hardness indentations in human and bovine dentin compared with human enamel. Caries Res. 1989;23(5):342-4.
  9. Microhardness of superficial and deep sound human dentin. J Biomed Mater Res A. 2003 Sep 15;66(4):850-3.
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