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Evaluation of post-surface conditioning to improve interfacial adhesion in post-core restorations
Mylswamy Sumitha1, Rajkumar Kothandaraman, Mahalaxmi Sekar
1Department of Conservative Dentistry & Endodontics, Meenakshi Ammal Dental College, MAHER University, Chennai, India.
Journal of Conservative Dentistry : JCD
|June 22, 2011
Summary
Alkaline potassium permanganate surface treatment significantly improved the interfacial strength between fiber posts and resin composites. This enhances adhesion in the post/core unit through chemical and micromechanical retention.
Area of Science:
- Dental Materials Science
- Biomaterials Engineering
- Restorative Dentistry
Background:
- Fiber posts are widely used in dental restorations.
- Ensuring strong adhesion between fiber posts and core build-up materials is crucial for long-term success.
- Various surface treatments aim to enhance this interfacial bond strength.
Purpose of the Study:
- To evaluate the effect of different post-surface treatments on the interfacial strength.
- To compare alkaline potassium permanganate, hydrogen peroxide, phosphoric acid, and silanization alone.
- To determine the optimal surface treatment for fiber post and resin composite bonding.
Main Methods:
- Forty fiber posts were divided into four treatment groups.
- Treatments included alkaline potassium permanganate, hydrogen peroxide, phosphoric acid, and silanization.
- Microtensile bond strength testing was performed on post-core specimens.
- Statistical analysis used two-way ANOVA and paired T tests.
Main Results:
- Alkaline potassium permanganate treatment showed a significant positive influence on microtensile interfacial bond strength.
- Other tested treatments also affected bond strength, but potassium permanganate yielded the most significant results.
- The results indicate varying efficacy of different surface pretreatments.
Conclusions:
- Surface chemical treatments enhance silanization efficiency of the fiber post resin.
- Adhesion in the post/core unit is a combination of chemical and micromechanical retention.
- Alkaline potassium permanganate is a promising surface treatment for improving fiber post bonding.
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