SYNERGIC PHOTOTOXIC EFFECT OF VISIBLE LIGHT OR GALLIUM- ARSENIDE LASER IN THE PRESENCE OF DIFFERENT PHOTOSENSITIZERS ON PORPHYROMONAS GINGIVALIS AND FUSOBACTERIUM NUCLEATUM

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GHANBARI HABIBOLLAH; SHAHNASERI SHIRIN

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Journal: JOURNAL OF LASERS IN MEDICAL SCIENCES Year:2018 | Volume:9 | Issue:SUPPL A (9TH WORLD CONGRESS OF SOLA) Page(s): 48-48

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Title

SYNERGIC PHOTOTOXIC EFFECT OF VISIBLE LIGHT OR GALLIUM- ARSENIDE LASER IN THE PRESENCE OF DIFFERENT PHOTOSENSITIZERS ON PORPHYROMONAS GINGIVALIS AND FUSOBACTERIUM NUCLEATUM

Author(s)

GHANBARI HABIBOLLAH | SHAHNASERI SHIRIN

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Abstract

Background: According to the development of resistant strains of pathogenic bacteria following treatment with antimicrobial chemotherapeutic agents, alternative approaches such as lethal photosensitization are being used. The aim of this study was to evaluate the effect of visible light and laser beam radiation in conjugation with three different photosensitizers on the survival of two main periodontopathogenic bacteria including Porphyromonas gingivalisand Fusobacterium nucleatum in different exposure periods.Methods: In this in vitro prospective study, strains of P. gingivalis and F. nucleatum were exposed to visible light at wavelengths of 440 nm and diode laser light, gallium-arsenide, at wavelength of 830 nm in the presence of a photosensitizer (erythrosine, curcuma, or hydrogen peroxide). They were exposed 1-5 min to each light. Each experiment was repeated 3 times for each strain of bacteria. Data were analyzed by two-ways ANOVA and least significant difference post-hoc tests. P<0.05 was considered as significant. After 4 days the colonies were counted.Results: Viability of P. gingivalis was reduced 10% and 20% subsequent to exposure to visible light and diode laser, respectively. The values were 65% and 75% forF. nucleatum in a period of 5-minute, respectively.Conclusion: Exposure to visible light or laser beam in conjugation with the photosensitizers suspension caused significant reduction in the number of P. gingivalis in duration of 5-min, suggesting a synergic phototoxic effect. However, the survival rate of F. nucleatum following the exposure to laser with hydrogen peroxide, erythrosine and rhizome of Curcuma longa (curcumin) after 5-minute was 10%, 20% and 90% respectively.

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APA: Copy

GHANBARI, HABIBOLLAH, & SHAHNASERI, SHIRIN. (2018). SYNERGIC PHOTOTOXIC EFFECT OF VISIBLE LIGHT OR GALLIUM- ARSENIDE LASER IN THE PRESENCE OF DIFFERENT PHOTOSENSITIZERS ON PORPHYROMONAS GINGIVALIS AND FUSOBACTERIUM NUCLEATUM. JOURNAL OF LASERS IN MEDICAL SCIENCES, 9(SUPPL A (9TH WORLD CONGRESS OF SOLA)), 48-48. SID. https://sid.ir/paper/326099/en

Vancouver: Copy

GHANBARI HABIBOLLAH, SHAHNASERI SHIRIN. SYNERGIC PHOTOTOXIC EFFECT OF VISIBLE LIGHT OR GALLIUM- ARSENIDE LASER IN THE PRESENCE OF DIFFERENT PHOTOSENSITIZERS ON PORPHYROMONAS GINGIVALIS AND FUSOBACTERIUM NUCLEATUM. JOURNAL OF LASERS IN MEDICAL SCIENCES[Internet]. 2018;9(SUPPL A (9TH WORLD CONGRESS OF SOLA)):48-48. Available from: https://sid.ir/paper/326099/en

IEEE: Copy

HABIBOLLAH GHANBARI, and SHIRIN SHAHNASERI, “SYNERGIC PHOTOTOXIC EFFECT OF VISIBLE LIGHT OR GALLIUM- ARSENIDE LASER IN THE PRESENCE OF DIFFERENT PHOTOSENSITIZERS ON PORPHYROMONAS GINGIVALIS AND FUSOBACTERIUM NUCLEATUM,” JOURNAL OF LASERS IN MEDICAL SCIENCES, vol. 9, no. SUPPL A (9TH WORLD CONGRESS OF SOLA), pp. 48–48, 2018, [Online]. Available: https://sid.ir/paper/326099/en

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