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Submitted: 03 Aug 2014
Revision: 26 Aug 2014
Accepted: 02 Sep 2014
ePublished: 25 Oct 2014
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Avicenna J Dent Res. 2014;6(2): 64-67.
doi: 10.17795/ajdr-22506
  Abstract View: 1189
  PDF Download: 798

Research Article

Comparison of the Microleakage of Encapsulated and Hand-Mixed Glass Ionomer in Class V Restorations in Deciduous Teeth

Hamid Moradian 1, Shiva Jafarian 2*

1 Department of Pediatrics, School of Dentistry, Shiraz University of Medical Sciences, Shiraz, IR Iran
2 Research Committee, School of Dentistry, Shiraz University of Medical Sciences, Shiraz, IR Iran
*Corresponding Author: Corresponding author: Shiva Jafarian, Research Committee, School of Dentistry, Shiraz University of Medical Sciences, Shiraz, IR Iran. Tel: +98-9177176849, Fax: +98-7136462181, Email: sh.jafarian90@gmail.com

Abstract

Backgrounds: The degree of microleakage is one of the main criteria in evaluating the restorative materials such as glass ionomer (GI) restoratives, which are available in two forms: loose powder and liquid form to be hand-mixed or pre-proportioned in a capsule to be mixed mechanically.

Objectives: This study was conducted to compare the microleakage of encapsulated GI restoratives with their hand-mixed equivalent.

Materials and Methods: In this interventional (field trial) study, 40 extracted caries-free deciduous teeth were selected. After preparing class V cavities, teeth were divided into two groups. Cavities in group one were restored with encapsulated self-cured GI restorative (EQUIA, Fuji IX). In the second group, hand-mixed GI restoratives (Fuji IX) were used, which were prepared in accordance with the manufacturers’ recommended powder to liquid mixing ratios. After thermo cycling, the samples were immersed in 0.5% methylene blue solution for 12 hours. Then, they were sectioned for examination under light microscope. Micro leakage of each restoration was evaluated by the depth scale of the dye penetration along the tooth-restoration interface.

Results: Statistical analysis by Mann-Whitney U test showed no significant difference in micro leakage between encapsulated GI restoratives and their hand-mixed equivalents (P < 0.05).

Conclusions: There was no difference between micro leakage of hand-mixed and encapsulated GIs and in case of following the manufacturer’s instruction and recommendations, hand-mixed GIs could be as efficient as their encapsulated equivalents.

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