[Home ] [Archive]    
:: Main :: About :: Current Issue :: Archive :: Search :: Submit ::
Main Menu
Journal Information::
Editorial Policies::
Articles archive::
For Authors::
Contact us::
Site Facilities::
::
Search in website

Advanced Search
Receive site information
Enter your Email in the following box to receive the site news and information.
Last site contents
:: Contact Us
:: Volume 18, Issue 2 (Foll Text in Persian 2006) ::
J Iran Dent Assoc 2006, 18(2): 31-37 Back to browse issues page
The effect of mechanical surface conditioning methods on the shear bond strength of repaired composites
Parnian Alizadeh Oskuee * 1, Narmin Mohammadi , Siavash Savadi Oskuee , Ali Hoseini
1- , ParnianAlizadeh@yahoo.com
Abstract:   (16020 Views)

The effect of mechanical surface conditioning methods on the shear bond strength of repaired composites

 Dr. P. Alizadeh Oskuee* - Dr. N. Mohammadi* - Dr. S. Savadi Oskuee* - Dr. A. Hoseini**

 *- Assistant Professor of Operative Dentistry Dept. - Faculty of Dentistry – Tabriz University of Medical Sciences.

**- Dentist.

Background and Aim: Considering the cost and quantity of tooth loss in the process of cavity preparation, repairing composite restorations instead of replacing them would be much more efficient. The aim of this study was to evaluate and compare the effectiveness of different mechanical surface treatment methods on the shear bond strength (SBS) between old and new composites.

Materials and Methods: In this experimental in vitro study, 80 cylindrical specimens were fabricated from Tetric Ceram Composite (A1, vivadent) and were preserved in 370c distilled water. They were divided into 4 groups according to the surface treatment method: control (no treatment), roughening by a diamond bur, polishing with Sof-Lex disks and air-abrasion. All specimens were thermocycled (0.5-550c, 500 cycles) prior to testing for SBS. An Instron Universal Testing Machine (5mm/min Cross head imm) was used to evaluate the SBS of the specimens. Data were analysed by one-way ANOVA and Duncan tests.

 Results: The highest to lowest shear bond strengths were seen in the Sof-Lex disk, air abrasion, diamond bur and control groups, respectively. A significant difference was observed between all three experimental groups (air abrasion, diamond bur, Sof-Lex disk) and the control group. There were no significant differences between the air abrasion and diamond bur groups, but the other groups revealed a significant difference when compared as pairs. Adequate wetting and induction of a microretentive surface, may explain the high SBS observed in the Sof-Lex group.

Conclusion: The results of this study emphasize the importance of mechacinal surface conditioning prior to composite restoration repair.

Key words: Bond strength - Surface treatment - Air abrasion - Sof-Lex disk

Keywords: Bond strength, Surface treatment, Air abrasion, Sof-Lex disk
Full-Text [PDF 167 kb]   (2886 Downloads)    
Type of Study: Research | Subject: General
Send email to the article author

Add your comments about this article
Your username or Email:

CAPTCHA


XML     Print


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

Alizadeh Oskuee P, Mohammadi N, Savadi Oskuee S, Hoseini A. The effect of mechanical surface conditioning methods on the shear bond strength of repaired composites. J Iran Dent Assoc 2006; 18 (2) :31-37
URL: http://jida.ir/article-1-50-en.html


Rights and permissions
Creative Commons License This work is licensed under a Creative Commons Attribution-NonCommercial 4.0 International License.
Volume 18, Issue 2 (Foll Text in Persian 2006) Back to browse issues page
Journal of Iranian Dental Association

AWT IMAGE

This work is licensed under a Creative Commons Attribution-NonCommercial 3.0 Unported License which allows users to read, copy, distribute and make derivative works for non-commercial purposes from the material, as long as the author of the original work is cited properly

Persian site map - English site map - Created in 0.04 seconds with 37 queries by YEKTAWEB 4645