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In vitro temperature change at the dentin/pulpal interface by using conventional visible light versus argon laser
D S Cobb1, D N Dederich, T V Gardner
1University of Iowa College of Dentistry, Iowa City, Iowa 5224, USA.
Lasers in Surgery and Medicine
|May 11, 2000
Summary
The argon laser, a new dental curing light, poses less thermal risk to the pulp than visible light curing units. This finding suggests the argon laser is a safe option for dental restorations when used appropriately.
Area of Science:
- Dental Materials Science
- Biomedical Engineering
- Laser Dentistry
Background:
- Visible light curing units are standard for dental restorative resins.
- Argon lasers are emerging as an alternative curing technology.
- Comparative thermal risk to the dental pulp requires investigation.
Purpose of the Study:
- To compare the thermal effects of argon lasers versus visible light curing units on the dental pulp.
- To evaluate temperature increases at the dentin-pulpal interface under different exposure conditions.
Main Methods:
- In vitro measurement of temperatures at the dentin-pulpal interface.
- Varied experimental conditions: dentin thickness, light exposure duration and waveform, and presence of composite resin.
Main Results:
- The argon laser generally produced lower temperature increases at the dentin-pulpal interface compared to visible light.
- Specific exposure parameters influenced the degree of temperature rise for both light sources.
Conclusions:
- The argon laser appears to present a minimal thermal risk to the dental pulp.
- Recommended energy levels for argon laser use are advised to ensure pulp safety in dental applications.