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19 January 1996 Thermal stress in dentin and enamel under CO<sub>2</sub> laser irradiation
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Ablation of dentin and tartar was studied under carbon dioxide-laser irradiation in cw and pulse mode with pulse length down to 150 microseconds. The specimens had been cut by a diamant blade to slices of thicknesses between 0.8 and 2.8 mm. The laser induced temperature rise was measured by an infrared camera monitoring the backside of the samples. The specimens shape and structure at the laser spot was analyzed by electron microscopy. Of special interest was the testing of the SwiftLaseTM to reducing the heat. The experimental results show the necessity of a water cooling in all application modes. The origin of the cracks which had been observed in many of the samples, is currently under investigation.
© (1996) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Dirk H. Meyer and Hans-Jochen Foth "Thermal stress in dentin and enamel under CO<sub>2</sub> laser irradiation", Proc. SPIE 2623, Medical Applications of Lasers III, (19 January 1996);

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