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Shock-absorbing behavior of five restorative materials used on implants
S E Gracis1, J I Nicholls, J D Chalupnik
1Department of Restorative Dentistry, University of Washington School of Dentistry, Seattle 98195.
The International Journal of Prosthodontics
|May 1, 1991
Summary
Dental restorative resins significantly reduced impact forces on implant crowns by approximately 50% compared to porcelain and metal alloys. This finding highlights the potential of resins for improved implant restoration durability.
Area of Science:
- Biomaterials Science
- Dental Implantology
- Mechanical Engineering
Background:
- Dental implants require durable and impact-resistant restorative materials.
- Veneering materials on implant crowns are subjected to significant forces.
- Understanding material damping properties is crucial for long-term implant success.
Purpose of the Study:
- To evaluate the damping effect of five different restorative materials on implant-supported crowns.
- To compare the impact force reduction capabilities of various dental materials.
Main Methods:
- Five restorative materials were tested: gold alloy, noble metal ceramic alloy, porcelain, light-activated resin, and heat-polymerized resin.
- Test crowns were rigidly connected to a Brånemark implant.
- An impact force was applied to the veneered crowns, and the damping effect was measured.
Main Results:
- Two resin materials (light-activated and heat-polymerized) demonstrated a significant damping effect.
- Resins reduced impact forces by approximately 50% compared to porcelain and metal alloys.
- Gold alloy, noble metal ceramic alloy, and porcelain showed less damping capacity.
Conclusions:
- Resin-based restorative materials offer superior impact force damping for dental implant restorations.
- The findings suggest that resins may enhance the longevity and reduce stress on implant components.
- Further clinical evaluation is warranted to confirm the long-term benefits of resin veneers in implant dentistry.