Volume 15, Number 72 (1-2008)                   daneshvarmed 2008, 15(72): 53-64 | Back to browse issues page


XML Persian Abstract Print


Download citation:
BibTeX | RIS | EndNote | Medlars | ProCite | Reference Manager | RefWorks
Send citation to:

mohamadibasir M, Nazari Moghadam K, Labbaf H. Effect of Various Liners on the In vitro Microleakage of Cervical Margins of Class V Composite Restoration . daneshvarmed. 2008; 15 (72) :53-64
URL: http://daneshvarmed.shahed.ac.ir/article-1-414-en.html

assistant professor Faculty of Dentistry, Shahed University
Abstract:   (9009 Views)

  Objectives: The purpose of this study was to investigate the microleakage at cervical margins of class V composite restorations with thickened no filled adhesive, flowable composite, filled adhesive and glass- ionomer liners (light cured, conventional).

  Materials & Methods: Thirty recently extracted human molars were prepared with standardized class V cavities of 5mm length (mesial- distal x 2mm width (occlusal- gingival), and 1.5mm depth with cervical margins located 1.5mm under CEJ on the buccal and lingual surfaces. The cavities were randomly assigned into 6 groups (n= 10) group 1-SBMP +Filtek Z250 (control) group 2 – SBMP +2 layer of adhesive of SBMP located only on the gingival wall (3 layers) + Filtek Z250 group 3- SBMP + filled adhesive (PQ1)1 layer located only on the gingival wall + Filtek Z250 group 4 – SBMP + Filtek Flow 1 layer located only on the gingival wall (0.5mm) + Filtek Z250 group 5 – Fuji II LC (1 layer only on the gingival wall with 0.5mm thickness) + SBMP + Filtek Z250 and group 6 –Fuji II LC (1 layer only on the gingival wall with 0.5mm thickness) + SBMP + Filtek Z250. After immersion in tap water for 24h, the specimens were thermocycled (500X 5- 55 c, 30 sec dwell time) and then immersed in a 0.5% basic fuchsine solution for 24h. The restorations were sectioned longitudinally at buccolingual direction and were observed under the stereo-microscope at 40x magnification and extent of dye penetration was assesd according to ISO TR 11405, 2003. Data was subjected to the Kruskal –Wallis and Mann- Withney U test (p<0.05).

  Results: groups III, V and VI showed lesser microleakage than group I (p<0.05). Groups I, II and IV showed similar microleakage (p>0.05).

  Conclusion: This study showed that any of used methods could not completely eliminate the cervical microleakag, but glaas-ionomer liners and filled adhesive could reduce the cervical microleakage.

Full-Text [PDF 394 kb]   (824 Downloads)    
Type of Study: Research |

Add your comments about this article : Your username or email:
Write the security code in the box

© 2015 All Rights Reserved | Daneshvar

Designed & Developed by : Yektaweb