Evaluation of effect of different cavity disinfectants on shear bond strength of composite resin to dentin using two-step self-etch and one-step self-etch bonding systems: a comparative in vitro study
| Autor: | Shetty A, M C Mahesh, Shreetha Bhandary, J Pramod, Reddy Ms, Prashanth Mb |
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| Rok vydání: | 2013 |
| Předmět: |
Dental Stress Analysis
Materials science Time Factors Sodium Hypochlorite Surface Properties Dentistry Dental bonding Composite Resins chemistry.chemical_compound Dental Materials Acid Etching Dental Materials Testing Dentin medicine Shear strength Humans Composite material Hydrogen peroxide General Dentistry Universal testing machine Bond strength business.industry Chlorhexidine Dental Bonding Temperature Adhesiveness Dental Disinfectants Humidity Hydrogen Peroxide medicine.anatomical_structure chemistry Sodium hypochlorite Dentin-Bonding Agents Stress Mechanical business Dental Cavity Preparation Shear Strength medicine.drug |
| Zdroj: | The journal of contemporary dental practice. 14(2) |
| ISSN: | 1526-3711 |
| Popis: | Aim and objectives To evaluate the effect of 2% chlorhexidine, 2% sodium hypochlorite, 3% hydrogen peroxide on shear bond strength of composite resin to dentin using two-step and onestep self-etch bonding systems and to study the mode of failure of specimens under stereomicroscope. Materials and methods Eighty extracted sound human posterior teeth were used. The occlusal surfaces were ground to expose the dentin and were then randomly divided into 4 main groups. In group I, no cavity disinfectant was used and served as control. In groups II, III, IV, 2% chlorhexidine, 2% sodium hypochlorite and 3% hydrogen peroxide were used as cavity disinfectants respectively. Each group was then divided into two subgroups of 10 teeth each according to the bonding agent used, two-step self-etch (Adper SE Plus) and one-step self-etch (Adper Easy One) respectively. A transparent cylindrical plastic tube was loaded with microhybrid composite and placed over the dentin and light cured for 40 seconds. The specimens were subjected to shear stress in the universal testing machine. Results Pretreatment with 2% chlorhexidine, 2% sodium hypochlorite and 3% hydrogen peroxide, had a negative effect on the shear bond strength of self-etching bonding systems. Conclusion The highest bond strength was found in 2% chlorhexidine group followed by 2% sodium hypochlorite group and the lowest bond strength was found in 3% hydrogen peroxide group. Clinical significance All three cavity disinfectants used in this study reduced the shear bond strength and hence should be used with caution. How to cite this article Reddy MSC, Mahesh MC, Bhandary S, Pramod J, Shetty A. Evaluation of Effect of Different Cavity Disinfectants on Shear Bond Strength of Composite Resin to Dentin using Two-Step Self-Etch and One-Step Self-Etch Bonding Systems: A Comparative in vitro Study. J Contemp Dent Pract 2013;14(2):275-280. |
| Databáze: | OpenAIRE |
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