The Inhibition of Streptococcus mutans by He- Ne Laser via TBO Photosensitizer

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Layla M. Hassan
Hussein A. Jawad
Dhuha S. Salih

Abstract

This work aims to investigate the inhibition of vitality of Streptococcus mutans, which is the causative agent of caries. A 632.8 nm He-Ne laser with the output power of 4.5mW was used in combination with toluidine blue O (TBO) at the concentration of 50μg/ml as a photosensitizer. Streptococcus mutans was isolated from 35 patients if carious teeth. Three isolates were chosen and exposed to different energy densities of He – Ne laser light 3.8, 11.7, 34.5 and 104.1 J/cm². After irradiation, substantial reduction was observed in the number of colony forming units (CFU)/ ml. The reduction in the number of CFU was increasing as the dose increased.

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How to Cite
[1]
L. M. Hassan, H. A. Jawad, and D. S. Salih, “The Inhibition of Streptococcus mutans by He- Ne Laser via TBO Photosensitizer”, IJL, vol. 5, no. B, pp. 21–25, Dec. 2006, doi: 10.31900/ijl.v5iB.141.
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Articles

How to Cite

[1]
L. M. Hassan, H. A. Jawad, and D. S. Salih, “The Inhibition of Streptococcus mutans by He- Ne Laser via TBO Photosensitizer”, IJL, vol. 5, no. B, pp. 21–25, Dec. 2006, doi: 10.31900/ijl.v5iB.141.

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