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Alternative Aging Solutions to Accelerate Resin-Dentin Bond Degradation
The Journal of Adhesive Dentistry
|August 22, 2015
Summary
Aging solutions like propionic acid, acetic acid, and ethanol accelerate the assessment of resin-dentin bond durability. These solutions effectively simulate degradation, providing faster insights into bond strength and nanoleakage compared to distilled water.
Area of Science:
- Dental Materials Science
- Adhesive Dentistry
- Biomaterials Durability
Background:
- Evaluating the long-term durability of resin-dentin bonds is crucial for clinical success.
- Traditional aging methods can be time-consuming, delaying the understanding of material degradation.
- Accelerated aging techniques are needed to efficiently assess bond stability.
Purpose of the Study:
- To evaluate the impact of various aging solutions on the durability of resin-dentin bonds.
- To compare the effectiveness of different solutions in simulating degradation using microtensile bond strength (μTBS) and nanoleakage (NL) tests.
Main Methods:
- Adhesive system (Adper Single Bond 2) applied to human molars.
- Bonded specimens were aged in distilled water, propionic acid, acetic acid, ethanol, or mineral oil for up to 6 months.
- Microtensile bond strength and nanoleakage were assessed using SEM analysis.
Main Results:
- Acetic acid and ethanol showed faster degradation of bond strength within 1 week.
- Propionic acid and distilled water significantly reduced bond strength after 1 and 6 months, respectively.
- Mineral oil did not affect bond strength, while nanoleakage increased in all other solutions after storage.
Conclusions:
- Propionic acid, acetic acid, and ethanol can serve as effective accelerated aging solutions.
- These solutions allow for quicker evaluation of resin-dentin bond resistance to degradation.
- Mineral oil is not suitable for simulating degradation in this context.
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