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The optimum curing cycle for a light- and heat-cured composite inlay material
1Department of Oral and Dental Science, University of Bristol Dental School, UK.
Journal of Oral Rehabilitation
|April 1, 1997
Summary
Optimal curing of composite inlays involves heat. Heat-curing at 100°C for 5 minutes significantly enhances material properties like transverse strength and microhardness compared to light-curing alone.
Area of Science:
- Materials Science
- Dental Materials
Background:
- Composite inlays are widely used in restorative dentistry.
- Optimizing curing cycles is crucial for material performance.
Purpose of the Study:
- To determine the optimal curing cycle for a light- and heat-cured composite inlay material.
- To evaluate the effect of different heat-curing parameters on material properties.
Main Methods:
- Transverse bend test and surface microhardness test were employed.
- Specimens underwent light-curing and various light- and heat-curing cycles (50°C and 100°C for different durations).
Main Results:
- Heat-curing at 100°C for at least 1 minute significantly improved transverse strength, modulus of elasticity, and surface microhardness.
- The most significant improvements were observed with longer durations at 100°C.
Conclusions:
- Heat-curing at 100°C is superior to light-curing alone or at 50°C for composite inlays.
- A curing cycle of 100°C for 5 minutes is identified as the most appropriate for optimal material properties.