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Effectiveness of polymerization of a prosthetic composite using three polymerization systems
N Tanoue1, H Matsumura, M Atsuta
1Nagasaki University School of Dentistry, Nagasaki, Japan. t-naomi@net.nagasaki-u.ac.jp
The Journal of Prosthetic Dentistry
|September 9, 1999
Summary
High-intensity light sources for dental composites significantly improve hardness and reduce solubility compared to standard methods. Metal halide lamps offer superior depth of cure for prosthetic veneering composites.
Area of Science:
- Dental Materials Science
- Polymer Chemistry
- Biomaterials Engineering
Background:
- Composite material properties depend on the polymerizing unit.
- Limited data exists comparing high-intensity light sources with secondary heat treatment for polymerization.
Purpose of the Study:
- To evaluate the impact of different polymerization systems on composite properties.
- To assess hardness, solubility, and depth of cure in prosthetic veneering composites.
Main Methods:
- Three polymerization methods were tested on a prosthetic veneer composite.
- Knoop hardness, water solubility, and depth of cure were measured.
- Statistical analysis included ANOVA and Duncan's test.
Main Results:
- Metal halide units produced statistically greater hardness than other methods.
- Minimal material component was released into water with metal halide units.
- Metal halide units demonstrated the greatest depth of cure.
Conclusions:
- High-intensity polymerizing units can yield superior properties.
- Metal halide light sources offer advantages over proprietary post-heat treatment systems.