Morphological changes induced by short pulse hydrogen fluoride laser radiation on dental hard tissue and restorative materials
✍ Scribed by Patel, Bipin C. M.; Rickwood, Kenneth R.
- Publisher
- John Wiley and Sons
- Year
- 1997
- Tongue
- English
- Weight
- 758 KB
- Volume
- 21
- Category
- Article
- ISSN
- 0196-8092
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✦ Synopsis
Background and objective:
The potential benefits of the effects of lasers on dental tissues have yet to be realized but may be brought closer through the availability of a suitable laser. the objective of this project is to examine the surface morphological changes resulting from hydrogen fluoride (hf) laser radiation on tooth and restorative material surfaces.
Study design/materials and methods:
A hydrogen fluoride laser emitting at 2.9 microns is used to interact with a range of dental hard tissue and restorative materials. the surface morphological changes induced by 100 mj pulses of < 1 microsecond duration is studied using a sem.
Results:
The irradiated surfaces displayed microstructures similar to those of a mechanically fractured surface with no evidence of melting.
Conclusion:
This study suggests that tissue is removed by microexplosion, leaving a surface free from thermal damage with surface characteristics that would appear to facilitate the adhesion of restorative materials.