Journal of Iranian Dental Association
J Iran Dent Assoc
Medical Sciences
http://jida.ir
23
journal23
2383-3041
10.52547/jida
en
jalali
1396
10
1
gregorian
2018
1
1
30
1
online
1
fulltext
en
Comparative Evaluation of microleakage of Bulk-fill and Posterior Composite Resins Using the Incremental Technique and a Liner in Cl II Restorations
Restorative Dentistry
Restorative Dentistry
Original
Original
<div style="text-align: justify;"><strong>Background and Aim:</strong> In recent years there has been a surge in the use of tooth-colored restorations. However, the polymerization shrinkage of these materials can form gaps, resulting in microleakage. This study aimed to compare microleakage by using different materials and techniques.<br>
<strong>Materials and Methods:</strong> In this experimental study, Cl II cavities were prepared on the mesial surfaces of 60 sound human third molars. The teeth were randomly divided into five groups (n=12): Group 1 were filled with Surefil posterior composite using the oblique incremental technique. In group 2 Surefil SDR flowable composite was placed at the base of cavities followed by filling the cavity with Surefil posterior composite. Specimens in group 3 were restored only with Surefil SDR flowable composite resin in two steps, and in group 4, a layer of G-aenial Universal flow composite with 1 mm thickness was placed as the liner and the rest of the cavity filled with the Surefil posterior composite using the oblique incremental technique. Group5 benefited from snow plow technique using G-aenial Universal flow and Surefil posterior composite. Samples thermocycled and placed in 0.5% fuchsine solution for 24 hours. The teeth were evaluated under a stereomicroscope for the deepest dye penetration. Kruskal-Wallis and Mann-Whitney tests were used for analysis of data.<br>
<strong>Results:</strong> The highest frequencies of scores 1 and zero were recorded in the group 5 which indicating the least microleakage in this group.<br>
<strong>Conclusion:</strong> G-aenial Universal Flo composite resin with the snow plow technique resulted in a significant decrease in the microleakage.</div>
Composite Resins, Dental leakage, Dental Cavity Lining, Polymerization
1
8
http://jida.ir/browse.php?a_code=A-10-1-895&slc_lang=en&sid=1
Samaneh
Doustfateme
2300319475328460020818
2300319475328460020818
No
Assistant Professor, Persian Gulf Oral and Dental Disease Research Center, Hormozgan University of Medical Sciences, Bandar Abbas, Iran
Kazem
Khosravi
2300319475328460020819
2300319475328460020819
No
Professor, Dental Research Center, Department of Operative Dentistry, School of Dentistry, Isfahan University of Medical Sciences, Isfahan, Iran
Somayeh
Hosseini
somayehoseini@yahoo.com
2300319475328460020820
2300319475328460020820
Yes
Assistant Professor, Department of Operative Dentistry, Dental Materials Research Center, School of Dentistry, Isfahan University of Medical Sciences, Isfahan, Iran