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Role of Er.Cr: YSGG Laser and Fluoride in Caries Resistance | Abstract

Journal of Research in Medical and Dental Science
eISSN No. 2347-2367 pISSN No. 2347-2545

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Role of Er.Cr: YSGG Laser and Fluoride in Caries Resistance

Author(s): Ahmed Adnan Hadi*, Basima Mohammed Ali

Abstract

The purpose of this study was to compare the effectiveness of using the Er.Cr: YSGG laser with and without Acidulated
Phosphate Fluoride (APF) to improve tooth resistance to caries. Sixty enamel sample obtained from first premolar teeth (4
mm × 4 mm) were randomly divided into six groups (n=10): G1: control group (no treatment), G2: Acidulated Phosphate
Fluoride (APF) only, G3: Er, Cr: YSGG laser at 0.25 W, 20 Hz, 1% water and 10% air, G4: Er, Cr: YSGG laser at 0.50 W, 20 Hz,
1% water and 10% air, G5: Er, Cr: YSGG laser at 0.25 W, 20 Hz, 1% water and 10% air and acidulated phosphate fluoride,
G6: Er, Cr: YSGG laser at 0.5 W, 20 Hz, 1% water and 10% air and acidulated phosphate fluoride. The samples were subjected
to pH cycling for 10 days after being irradiated and treated. The samples were tested for digital vickers micro hardness on
(9.8 N) at the enamel surface on baseline, after laser irradiation and after ph cycling. Selected sample were further
evaluated by scanning electron microscopy (n=1) for each group after surface laser irradiated. Date were statistically
analysis (α=0.05).
Results: There was a statistically significant decline in micro hardness values between baseline and post PH-cycling
assessments in the control, laser, and fluoride+laser groups (P<0.05). However, as compared to the baseline, the fluoride and
laser+fluoride groups showed a considerable increase in micro hardness values.
Conclusion: When compared to the control group, acidulated phosphate fluoride application with laser irradiation of 0.5 w,
20 Hz, 1% water, and 10% air enhanced enamel surface micro hardness and avoided enamel demineralization

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