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Polymerization kinetics of resin-based restorative materials.
Journal of Biomedical Materials Research
|March 1, 1983
Summary
This study investigates the cure kinetics of resin-based dental restoratives. Adjusting inhibitor, initiator, and accelerator concentrations controls polymerization rates and setting times, enabling "snap-set" behavior.
Area of Science:
- Polymer Chemistry
- Dental Materials Science
Background:
- Resin-based restorative materials are widely used in dentistry.
- Understanding their cure kinetics is crucial for clinical success.
Purpose of the Study:
- To investigate the cure kinetics and mechanism of resin-based restorative materials.
- To determine the influence of inhibitor, initiator, and accelerator concentrations on polymerization.
Main Methods:
- Incorporation of varying amounts of inhibitor, initiator, and accelerator into commercial resins.
- Monitoring polymerization using Infrared (IR) spectroscopy, viscosity measurements, and oscillating rheometry.
Main Results:
- Polymerization rate is first order with respect to initiator and accelerator concentration.
- Inhibitor concentration dictates the induction period duration.
- Inhibitor efficiency influences the difference between initial and final set times, allowing for "snap-set" behavior.
Conclusions:
- The cure process of resin-based restoratives can be precisely controlled by adjusting chemical components.
- Tailoring inhibitor, initiator, and accelerator levels offers a method to achieve desired setting characteristics, including rapid "snap-set" properties.