Microleakage Evaluation of Class II Composite Resin Restorations with Different Thicknesses of Resin-Modified Glass Ionomer
Background and Aim: One of the weaknesses of Class II composite resin restorations is gingival microleakage which contributes to postoperative sensitivity and secondary caries. The aim was to evaluate the microleakage in Class II composite resin restorations with different thicknesses of resin-modif...
| Main Authors: | , , |
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| Format: | Article |
| Language: | English |
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Islamic Dental Association of Iran
2018-07-01
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| Series: | Journal of Islamic Dental Association of Iran |
| Subjects: | |
| Online Access: | http://jidai.ir/browse.php?a_code=A-10-1-911&slc_lang=en&sid=1 |
| _version_ | 1818174092254117888 |
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| author | Horieh Moosavi Hamideh Sadat Mohammadipour Mohaddeceh Karamimoghaddam |
| author_facet | Horieh Moosavi Hamideh Sadat Mohammadipour Mohaddeceh Karamimoghaddam |
| author_sort | Horieh Moosavi |
| collection | DOAJ |
| description | Background and Aim: One of the weaknesses of Class II composite resin restorations is gingival microleakage which contributes to postoperative sensitivity and secondary caries. The aim was to evaluate the microleakage in Class II composite resin restorations with different thicknesses of resin-modified glass ionomer (RMGI).
Materials and Methods: In this in-vitro study, standardized Class II slot cavities were prepared on the proximal surfaces of 90 molars. In group 1, total-etch adhesive and composite resin were applied using the incremental technique. In group 2, total-etch adhesive and composite were applied using the bulk technique. In group 3, 1 mm of RMGI was applied over the gingival floor, which was covered with increments of composite. In group 4, 1 mm of RMGI was placed on the gingival floor and covered with composite using the bulk technique. In group 5, 2 mm of RMGI was applied over the gingival floor, followed by an incremental composite placement. In group 6, 2 mm of RMGI was placed on the gingival floor, and the cavity was filled using the bulk technique. After thermocycling and staining with methylene blue, the samples were sectioned, and the extent of dye penetration was examined under a stereomicroscope. Data were analyzed using Kruskal-Wallis test and logistic regression (α=0.05).
Results: The lowest and highest dye penetrations were observed in the first, second, and fifth groups, respectively. The RMGI thickness did not influence the microleakage scores significantly in either composite placement techniques (P=0.828).
Conclusion: None of the restorative techniques completely eliminated microleakage of Class II composite resin restorations. |
| first_indexed | 2024-12-11T19:38:54Z |
| format | Article |
| id | doaj.art-ba1bc47ddb594bea82e6893896167676 |
| institution | Directory Open Access Journal |
| issn | 2383-3041 2383-3041 |
| language | English |
| last_indexed | 2024-12-11T19:38:54Z |
| publishDate | 2018-07-01 |
| publisher | Islamic Dental Association of Iran |
| record_format | Article |
| series | Journal of Islamic Dental Association of Iran |
| spelling | doaj.art-ba1bc47ddb594bea82e68938961676762022-12-22T00:53:04ZengIslamic Dental Association of IranJournal of Islamic Dental Association of Iran2383-30412383-30412018-07-01303119126Microleakage Evaluation of Class II Composite Resin Restorations with Different Thicknesses of Resin-Modified Glass IonomerHorieh Moosavi0Hamideh Sadat Mohammadipour1Mohaddeceh Karamimoghaddam2 Associate Professor, Dental Materials Research Center, Department of Operative Dentistry, School of Dentistry, Mashhad University of Medical Sciences, Mashhad, Iran Assistant Professor, Dental Materials Research Center, Department of Operative Dentistry, School of Dentistry, Mashhad University of Medical Sciences, Mashhad, Iran Dentist, Private Practice, Mashhad, Iran Background and Aim: One of the weaknesses of Class II composite resin restorations is gingival microleakage which contributes to postoperative sensitivity and secondary caries. The aim was to evaluate the microleakage in Class II composite resin restorations with different thicknesses of resin-modified glass ionomer (RMGI). Materials and Methods: In this in-vitro study, standardized Class II slot cavities were prepared on the proximal surfaces of 90 molars. In group 1, total-etch adhesive and composite resin were applied using the incremental technique. In group 2, total-etch adhesive and composite were applied using the bulk technique. In group 3, 1 mm of RMGI was applied over the gingival floor, which was covered with increments of composite. In group 4, 1 mm of RMGI was placed on the gingival floor and covered with composite using the bulk technique. In group 5, 2 mm of RMGI was applied over the gingival floor, followed by an incremental composite placement. In group 6, 2 mm of RMGI was placed on the gingival floor, and the cavity was filled using the bulk technique. After thermocycling and staining with methylene blue, the samples were sectioned, and the extent of dye penetration was examined under a stereomicroscope. Data were analyzed using Kruskal-Wallis test and logistic regression (α=0.05). Results: The lowest and highest dye penetrations were observed in the first, second, and fifth groups, respectively. The RMGI thickness did not influence the microleakage scores significantly in either composite placement techniques (P=0.828). Conclusion: None of the restorative techniques completely eliminated microleakage of Class II composite resin restorations.http://jidai.ir/browse.php?a_code=A-10-1-911&slc_lang=en&sid=1Dental LeakageComposite ResinsGlass IonomerOpen Sandwich |
| spellingShingle | Horieh Moosavi Hamideh Sadat Mohammadipour Mohaddeceh Karamimoghaddam Microleakage Evaluation of Class II Composite Resin Restorations with Different Thicknesses of Resin-Modified Glass Ionomer Journal of Islamic Dental Association of Iran Dental Leakage Composite Resins Glass Ionomer Open Sandwich |
| title | Microleakage Evaluation of Class II Composite Resin Restorations with Different Thicknesses of Resin-Modified Glass Ionomer |
| title_full | Microleakage Evaluation of Class II Composite Resin Restorations with Different Thicknesses of Resin-Modified Glass Ionomer |
| title_fullStr | Microleakage Evaluation of Class II Composite Resin Restorations with Different Thicknesses of Resin-Modified Glass Ionomer |
| title_full_unstemmed | Microleakage Evaluation of Class II Composite Resin Restorations with Different Thicknesses of Resin-Modified Glass Ionomer |
| title_short | Microleakage Evaluation of Class II Composite Resin Restorations with Different Thicknesses of Resin-Modified Glass Ionomer |
| title_sort | microleakage evaluation of class ii composite resin restorations with different thicknesses of resin modified glass ionomer |
| topic | Dental Leakage Composite Resins Glass Ionomer Open Sandwich |
| url | http://jidai.ir/browse.php?a_code=A-10-1-911&slc_lang=en&sid=1 |
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