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Volume 8, Issue 4 (11-2019)
2019, 8(4): 13-17 |
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Baghalian A, Daneshvar S H, Maleki H. Research Paper: In Vitro Comparison of Microleaage of Two Nanohybrid Flowable Composites and RMGI in Class V Restorations in Primary Molars. Journal title 2019; 8 (4) :13-17
URL: http://3dj.gums.ac.ir/article-1-489-en.html
URL: http://3dj.gums.ac.ir/article-1-489-en.html
1- Assistant Professor, Department of Pediatric Dentistry, School of Dentistry, Tehran University of Medical Sciences
2- Dental Sciences Research Center, Department of Pediatric Dentistry, School of Dentistry, Guilan University of Medical Sciences, Rasht, Iran
3- Dentist
2- Dental Sciences Research Center, Department of Pediatric Dentistry, School of Dentistry, Guilan University of Medical Sciences, Rasht, Iran
3- Dentist
Abstract: (733 Views)
Abstract
Introduction: Composite resins undergo microleakage due to polymerization shrinkage particularly when located in enamel free margins. The purpose of this study was to assess and compare the microleakage of two nanohybrid flowable composites and resin modified glass ionomer in class V restorations of primary mandibular second molars.
Materials and Methods:This in vitro, experimental study was conducted on 30 primary mandibular second molars which were randomly divided into three groups. Standard class V cavities were prepared and restored with Grandio flow in Group A, G-aenial universal flow in Group B and RMGI in Group C. The restored teeth underwent 3000 thermal cycles between 5–55°C and then immersed in1M silver nitrate solution for 24 hours. The samples were sectioned buccolingually and degree of dye penetration was evaluated by stereomicroscope at ×10 magnification. Mann-Whitney U test and Paired T-test were used to analyze the data.
Results: In occlusal margin, there was no significant difference between three groups but at gingival margin, Grandio flow demonstrated significantly lower microleakage than G-aenial universal flow (P=0.002). There was not significant difference between Grandio flow and RMGI and also between RMGI and G-aenial universal flow (P>0.05).
Conclusion:Grandio flow is effective for decreasing the microleakage on enamel free margins.
Introduction: Composite resins undergo microleakage due to polymerization shrinkage particularly when located in enamel free margins. The purpose of this study was to assess and compare the microleakage of two nanohybrid flowable composites and resin modified glass ionomer in class V restorations of primary mandibular second molars.
Materials and Methods:This in vitro, experimental study was conducted on 30 primary mandibular second molars which were randomly divided into three groups. Standard class V cavities were prepared and restored with Grandio flow in Group A, G-aenial universal flow in Group B and RMGI in Group C. The restored teeth underwent 3000 thermal cycles between 5–55°C and then immersed in1M silver nitrate solution for 24 hours. The samples were sectioned buccolingually and degree of dye penetration was evaluated by stereomicroscope at ×10 magnification. Mann-Whitney U test and Paired T-test were used to analyze the data.
Results: In occlusal margin, there was no significant difference between three groups but at gingival margin, Grandio flow demonstrated significantly lower microleakage than G-aenial universal flow (P=0.002). There was not significant difference between Grandio flow and RMGI and also between RMGI and G-aenial universal flow (P>0.05).
Conclusion:Grandio flow is effective for decreasing the microleakage on enamel free margins.
Keywords: flowable hybrid composite
Dental Leakage
Composite Resins
Glass Ionomer Cements
Resins, Plant
Type of Study: Original article |
Subject:
General
Received: 2019/10/15 | Accepted: 2019/10/25 | Published: 2019/10/25
Received: 2019/10/15 | Accepted: 2019/10/25 | Published: 2019/10/25
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Owned by Guilan University of Medical Sciences.
Co-published by Negah Institute for Scientific Communication.
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