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:: Volume 34, Number 4 (Fall 2016) ::
J Dent Sch GYEAR__, 34(4): 225-234 Back to browse issues page
Microleakage of Bulk-Fill Composites at Two Different Time Points
Niloofar Kianvash Rad, Bahar Javid *, Narges Panahandeh, Amir Ghasemi, Ali Kamali, Gholamhasan Mohammadi
Dept. of Cosmetic and Operative Dentistry, Faculty of dentistry, Shahid Sadughi University of medical Sciences, Yazd, Iran.
Abstract:   (321 Views)

Objectives: Microleakage is the main concern in composite restorations. This study aimed to compare the microleakage of two bulk-fill and one conventional composite at two different time points.

Methods: Class II cavities were prepared in 60 premolar teeth and divided into six groups of 20. Groups 1 and 4 were incrementally filled with Grandio composite. Groups 2 and 5 were filled with X-tra fil bulk-fill composite. Groups 3 and 6 were filled with Tetric-N-Ceram bulk-fill composite in one layer. The samples were thermocycled for 5000 cycles between 25-55°C. In groups 1-3, the samples were incubated for 24 hours and then immersed in 1% methylene blue dye. Groups 4-6 were incubated for three months and then immersed in dye. All samples were mesiodistally sectioned and degree of microleakage was scored under a light microscope. The data were analyzed using Mann Whitney and Kruskal-Wallis tests.

Results: The results showed no significant difference among groups 1-5 and 6 in terms of microleakage (P>0.05) but a significant difference was noted between groups 1 and 4 in this regard (P=0.01). The microleakage in groups 4-6 was higher than that in groups 1-3 (P=0.02). Also, microleakage in gingival margins was greater than that in occlusal margins (P=0.02).

Conclusion: The microleakage of bulk-fill composites is comparable to that of conventional composites both at 24 hours and three months after restoration.

Keywords: Composite Resins, Dental Leakage, Time
Full-Text [PDF 454 kb]   (144 Downloads)    
Type of Study: Original Article | Subject: Special
Received: 2016/10/21 | Accepted: 2016/12/17 | Published: 2017/07/3


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Kianvash Rad N, Javid B, Panahandeh N, Ghasemi A, Kamali A, Mohammadi G. Microleakage of Bulk-Fill Composites at Two Different Time Points. J Dent Sch. 2016; 34 (4) :225-234
URL: http://jds.sbmu.ac.ir/article-1-1548-en.html
Volume 34, Number 4 (Fall 2016) Back to browse issues page
مجله دانشکده دندانپزشکی دانشگاه علوم پزشکی شهید بهشتی Shahid Beheshti University Dental Journal
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