Related Experiment Video
Updated: Aug 10, 2026
16:30
Application of Light-cured Dental Adhesive Resin for Mounting Electrodes or Microdialysis Probes in Chronic Experiments
Published on: July 30, 2007
Light-emitting diode curing light irradiance and polymerization of resin-based composite
Krishna Aravamudhan1, Cynthia J E Floyd, Duane Rakowski
1Product Evaluations, Research and Laboratories, Division of Science, American Dental Association, 211 East Chicago Ave., Chicago, Ill 60611, USA. aravamudhank@ada.org
Journal of the American Dental Association (1939)
|March 9, 2006
Summary
Six of seven light-emitting diode (LED) curing lights performed similarly to traditional lights in curing resin composites. Some resin composites cured with LED lights may need extra curing time or thinner layers.
Area of Science:
- Dental Materials Science
- Photopolymerization Technology
Background:
- Light-emitting diode (LED) curing lights are increasingly used in dentistry.
- Concerns exist regarding the efficiency and performance of LED curing lights compared to traditional methods.
Purpose of the Study:
- To conduct a comprehensive analysis of resin-based composite properties when cured with various LED lights.
- To compare the performance of seven LED lights against a control quartz-tungsten-halogen light.
Main Methods:
- Evaluated seven LED lights and one quartz-tungsten-halogen control light.
- Measured light intensity, depth of cure (DOC), degree of conversion (DC), hardness, and temperature rise.
- Tested three shades of hybrid resin-based composite and one microfill composite.
Main Results:
- DC at the top surface was consistent across all light types.
- At 2.0 mm depth, DC varied significantly, correlating with light intensity for several LED lights.
- Most LED lights showed a bottom-to-top hardness ratio >0.80 and a lower temperature rise than the control.
Conclusions:
- Six out of seven LED lights demonstrated comparable performance to the quartz-tungsten-halogen light.
- Some resin composites cured with LED lights may necessitate extended curing durations or reduced increment thickness for optimal results.
