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oa The effect of pulsed Er,Cr:YSGG laser scanning on the adhesion strength of lithium disilicate to tooth dentin
- Source: Journal of Emergency Medicine, Trauma and Acute Care, Volume 2024, Issue 1 - The 3rd Annual International Conference on Information and Sciences, Feb 2024, 10
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- 05 November 2023
- 10 December 2023
- 24 January 2024
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Abstract
This study examined how Er,Cr:YSGG laser surface conditioning affected the adhesion of lithium disilicate ceramic to the dentin tooth structure. Forty samples were divided into four groups (n=10). The first group was untreated, whereas the second was etched with hydrofluoric acid. The third group was treated for 2 minutes with a 7 W, 25 Hz Er,Cr:YSGG laser. The fourth group received the same Er,Cr:YSGG laser treatment at 5 W. The untreated group had the lowest shear bond scores. Laser-irradiated Group 3 at 7 W had a higher maximum shear bond strength than the hydrofluoric acid-etched group. The laser-irradiated groups also had a more uniform, non-invasive surface roughness pattern. The samples were tested by atomic force microscopy, scanning electron microscopy, and a universal shear bond testing machine. Surface treatment with the Er,Cr:YSSG laser at 7 W improves lithium disilicate ceramic adhesion to dentin. The laser outperforms hydrofluoric acid as the gold standard.