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:: Volume 31, Issue 3 (7-2019) ::
J Islam Dent Assoc Iran 2019, 31(3): 146-153 Back to browse issues page
Effect of Finishing and Polishing Time, Technique and Surface Coating on Microleakage of Encapsulated Restorative Resin Modified Glass Ionomer: An In Vitro Study
Fariba Ezoji1, Ghazaleh Ahmadi Zenouz1, Adeleh Yousefi *2, Soraya Khafri3
1- Assistant Professor, Dental Materials Research Center, Institute of Health, Babol University of Medical Sciences, Babol, Iran
2- Dental Student, Student Research Committee, Babol University of Medical Sciences, Babol, Iran , ad_yousefi@yahoo.com
3- Assistant Professor, Department of Social Medicine and Health, Faculty of Medicine, Babol University of Medical Sciences, Babol, Iran
Abstract:   (614 Views)
Background and Aim: This study aimed to assess the effect of finishing and polishing time, technique and surface coating on microleakage of encapsulated restorative resin modified glass ionomer (RMGI).
Materials and Methods: In this in vitro study, 40 freshly extracted human premolars were selected. Two standard class V cavities were prepared on the buccal and lingual surfaces of each tooth. The prepared teeth were randomly assigned to eight experimental groups (n=10) according to the finishing and polishing time, technique and surface coating. The samples were blindly examined for marginal microleakage using a stereomicroscope at x40 magnification. The Mann-Whitney U test was used to analyze the obtained data with the level of significance set at P<0.05.
Results: Groups with surface coating showed significantly lower microleakage than uncoated samples (P<0.001). The groups in which discs were used had lower microleakage (P<0.001). There were no statistically significant differences between the groups with delayed or immediate finishing and polishing (P>0.05). Our results showed that there were no statistically significant differences between enamel and dentinal walls with regard to marginal microleakage scores (P>0.05).
Conclusion: Immediate finishing and polishing of coated restorations with Sof-Lex discs decreases their marginal microleakage. Also, it is more effective at the gingival margin.
Keywords: Dental Marginal Adaptation, Dental Polishing, Glass Ionomer Cements, Dental Leakage
Full-Text [PDF 613 kb]   (138 Downloads)    
Type of Study: Orginal | Subject: Restorative Dentistry
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Ezoji F, Ahmadi Zenouz G, Yousefi A, Khafri S. Effect of Finishing and Polishing Time, Technique and Surface Coating on Microleakage of Encapsulated Restorative Resin Modified Glass Ionomer: An In Vitro Study. J Islam Dent Assoc Iran. 2019; 31 (3) :146-153
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Volume 31, Issue 3 (7-2019) Back to browse issues page
Journal of Islamic Dental Association of Iran

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