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Thermocycling, silane priming, and resin/porcelain interfaces interfaces--an electrical leakage study
Summary
Silane primer significantly reduces water leakage at resin/porcelain interfaces, even after thermal cycling. This improves the durability of dental restorations, preventing bond failures over time.
Area of Science:
- Dental Materials Science
- Biomaterials Engineering
- Polymer Chemistry
Background:
- Silane-primed resin/porcelain interfaces show high initial bond strengths.
- These bonds are susceptible to failure after prolonged water storage.
- Understanding factors influencing interfacial integrity is crucial for durable dental restorations.
Purpose of the Study:
- To evaluate the effect of silane primer on interfacial leakage.
- To assess the impact of thermocycling on resin/porcelain interfaces.
- To determine the combined influence of silane priming and thermocycling on leakage.
Main Methods:
- Porcelain discs were prepared with cavities and restored with BisGMA resin.
- Groups were treated with or without silane primer.
- Specimens underwent water storage and/or thermocycling (4-60°C).
- Interfacial leakage was quantified using electrical current measurements in KCl solution.
Main Results:
- The group without silane primer and with thermocycling exhibited the highest leakage.
- Silane priming consistently reduced interfacial leakage across tested conditions.
- Leakage currents were measured over 30 days and six months.
Conclusions:
- Silane priming is effective in minimizing interfacial leakage between BisGMA resin and dental porcelain.
- Thermocycling exacerbates leakage, highlighting the importance of surface treatment.
- Silane treatment enhances the longevity and stability of resin-porcelain bonds.