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:: Volume 18, Issue 4 (Foll Text in Persian 2006) ::
J Iran Dent Assoc 2006, 18(4): 97-103 Back to browse issues page
Effect of salivary contamination on shear bond strength of three different dentin adhesive systems
Hamid Kermanshah *1, Habib Haj miragha, Shapour Gatoeizadeh
1- , kermanshahhamid@yahoo.com
Abstract:   (16527 Views)

Effect of salivary contamination on shear bond strength of three different dentin adhesive systems

Dr. H. Kermanshah* - Dr. H. Haj miragha** - Dr. SH. Gatoeizadeh***

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

**- Assistant Professor of Fixed Prosthodontics Dept. & Dental Research Center - Faculty of Dentistry – Tehran University / Medical Sciences.

 ***- Dentist.

Background and Aim: Salivary contamination during application of bonding agents may adversely affect adhesive/dentin bond strength. This investigation evaluated the effect of salivary contamination on the shear bond strength of three different bonding systems without treatment.

Materials and Methods: Seventy-two intact posterior extracted human teeth were used in this interventional in vitro study. The tested materials consisted of ScotchBond MP (SBMP), SingleBond (SB) and Prompt which are considered as three-step, fourth generation two-step, fifth generation and one-step, sixth generation bonding agents, respectively. For each tooth, the enamel on the buccal surface was removed by a diamond disc. Specimens were assigned to 12 groups according to the studied adhesives: SBMP into 5, SB into 4 and Prompt into 3 groups. Dentin surfaces were contaminated with natural saliva for 5 seconds. Cylinders of composite were applied onto the dentin surfaces using plastic cylindrical molds. The shear bond strength of the specimens was determined with an Instron testing-machine at a crosshead speed of 0.5 mm/min. The results were analyzed by one-way ANOVA and Tukey HSD tests.

Results: A significant difference was not observed between the contaminated SBMP and SB groups, but the difference between the contaminated and uncontaminated specimens was significant. In the Prompt groups, the difference between the contaminated and uncontaminated samples was not significant. No significant difference was found between the shear bond strengths of the adhesives, except for Prompt and SBMP.

 Conclusion: Shear bond strength depends on the type and structure of the applied adhesive and the stage at which salivary contamination occurs.

 Key words: Dentin bonding - Shear bond strength - Composite resin - Saliva contamination

Keywords: Dentin bonding, Shear bond strength, Composite resin, Saliva contamination
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Type of Study: Research | Subject: General
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Kermanshah H, Haj miragha H, Gatoeizadeh S. Effect of salivary contamination on shear bond strength of three different dentin adhesive systems. J Iran Dent Assoc 2006; 18 (4) :97-103
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Volume 18, Issue 4 (Foll Text in Persian 2006) Back to browse issues page
Journal of Iranian Dental Association

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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

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