Effect of HeNe and pulsed Nd:YAG laser irradiation on intradental nerve responses to mechanical stimulation of dentine
✍ Scribed by Orchardson, Robert; Whitters, C. John
- Publisher
- John Wiley and Sons
- Year
- 2000
- Tongue
- English
- Weight
- 186 KB
- Volume
- 26
- Category
- Article
- ISSN
- 0196-8092
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✦ Synopsis
Background and Objective: Our study aimed to determine how lasing affected intradental nerve responses to dentine stimulation. Study Design/Materials and Methods: Intradental nerve activity was recorded from canine teeth of anaesthetised ferrets. Dentine exposed at the tip of the tooth was stimulated with a glass probe. After determining baseline responses to mechanical stimulation, dentine was lased using a pulsed Nd:YAG laser at 60-150mJ/pulse and 10-30 pulses/ sec (total power = 0.3-3.0 W). Results: The HeNe aiming beam alone and Nd:YAG laser at 0.3 W (+ HeNe) had no effect on intradental nerve responses to dentine stimulation. Lasing at 0.6-1.5 W could either enhance or suppress intradental nerve responses. Lasing at more than or equal to 2.0 W or repeated lasing at lower intensities depressed intradental nerve responses. Lasing often induced intradental nerve firing. Conclusion: HeNe lasing had no effect on intradental nerve excitability.