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:: Volume 21, Issue 4 (Winter (Special Issue) 2004) ::
J Dent Sch GYEAR__, 21(4): 634-641 Back to browse issues page
Effect of different composites on microleakage in Cl II restorations
Roya Aminian Corresponding Author: Dr. *1, Soodabe Kimiyai Dr., Amir Ghasemi Dr., Ahmad Najafi Dr.
Abstract:   (6407 Views)

Aim: One of the disadvantages of dental composites is polymerization contraction that tends to produce microleakage. It was reported that over 65% failures of posterior composite restorations were due to recurrent caries related to microleakage. Wide variety of application methods were suggested to decrease the microleakage around restorations. Although there is still a discrepancy around these solutions. The aim of this study was to determine in vitro the influence of different composites on microleakage in Cl II restorations.

Method & Materials: The method of this study was experimental and it’s technique was observation. Cl II cavities were prepared on both proximals of 24 human sound extracted premolars, which they were randomly assigned to 3 groups. (8 teeth, 15 cavities in each group). The teeth were restored using the following techniques. 1. Condensable composite, 2. Flowable + Condensable composite and 3. Self cure + Condensable composite. After thermocycling (1000 cycles of 5 °C / 55 °C) and immersion in 2% basic Fushin, the teeth were sectioned and evaluated for microleakage by stereomicroscope (x16). Microleakage was scored on a 0-4 scale.

Results: Kruskal-Wallis analysis showed that there was no significant difference between 3 groups. (P>0.05).

Conclusion: There was no significant difference in marginal leakage between condensable composite with or without flowable or selfcure composite.

J Dent Sch 2004 21(Special Issue): 634

Keywords: Dental composites, Cl II restorations, Microleakage
Full-Text [PDF 224 kb]   (1530 Downloads)    
Type of Study: Original Article | Subject: Special
Received: 2006/09/6
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Aminian R, Kimiyai S, Ghasemi A, Najafi A. Effect of different composites on microleakage in Cl II restorations. J Dent Sch. 2004; 21 (4) :634-641
URL: http://jds.sbmu.ac.ir/article-1-622-en.html

Volume 21, Issue 4 (Winter (Special Issue) 2004) Back to browse issues page
مجله دانشکده دندانپزشکی دانشگاه علوم پزشکی شهید بهشتی Shahid Beheshti University Dental Journal
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