Comparative bactericidai exposures for selected oral bacteria using carbon dioxide laser radiation
✍ Scribed by Dr. Douglas N. Dederich; Michael A. Pickard; Allison S. Vaughn; John Tulip; Kenneth L. Zakariasen
- Publisher
- John Wiley and Sons
- Year
- 1990
- Tongue
- English
- Weight
- 343 KB
- Volume
- 10
- Category
- Article
- ISSN
- 0196-8092
No coin nor oath required. For personal study only.
✦ Synopsis
Although relatively high C 0 2 laser energies have been shown to sterilize root canals, the response of several bacterial strains to decreasing exposures of C 0 2 laser energy remains unknown. Freshly grown bacterial cells were irradiated on glass microscope coverslips. A comparison of equivalent energy exposures with differing parameters was made on the bacterial viability. No statistically significant difference was found in the energy required to kill closely related bacterial species. However, the energy density required to kill greater than 99.5% of the bacteria is less than 200 J/cm2, much less than that shown to sterilize in a previous study.