Combining the effect of Gold Nanoparticles with Diode or Er. Cr:YSGG Laser on the Bond Strength of Etch- and- Rinse Adhesive applied to Dentin Surface
Sadony, D., Hassan, S., Sabry, M., El Shahawi, A., Moharrum, H. (2025). Combining the effect of Gold Nanoparticles with Diode or Er. Cr:YSGG Laser on the Bond Strength of Etch- and- Rinse Adhesive applied to Dentin Surface. EKB Journal Management System, (), -. doi: 10.21608/ejchem.2025.413470.12178
Doaa Mohamed Sadony; Shahinaz N Hassan; Mona Abdallah Sabry; Amal M. El Shahawi; Haytham S Moharrum. "Combining the effect of Gold Nanoparticles with Diode or Er. Cr:YSGG Laser on the Bond Strength of Etch- and- Rinse Adhesive applied to Dentin Surface". EKB Journal Management System, , , 2025, -. doi: 10.21608/ejchem.2025.413470.12178
Sadony, D., Hassan, S., Sabry, M., El Shahawi, A., Moharrum, H. (2025). 'Combining the effect of Gold Nanoparticles with Diode or Er. Cr:YSGG Laser on the Bond Strength of Etch- and- Rinse Adhesive applied to Dentin Surface', EKB Journal Management System, (), pp. -. doi: 10.21608/ejchem.2025.413470.12178
Sadony, D., Hassan, S., Sabry, M., El Shahawi, A., Moharrum, H. Combining the effect of Gold Nanoparticles with Diode or Er. Cr:YSGG Laser on the Bond Strength of Etch- and- Rinse Adhesive applied to Dentin Surface. EKB Journal Management System, 2025; (): -. doi: 10.21608/ejchem.2025.413470.12178

Combining the effect of Gold Nanoparticles with Diode or Er. Cr:YSGG Laser on the Bond Strength of Etch- and- Rinse Adhesive applied to Dentin Surface

Egyptian Journal of Chemistry
Articles in Press, Accepted Manuscript, Available Online from 24 October 2025
Document Type: Original Article
DOI: 10.21608/ejchem.2025.413470.12178
Authors
Doaa Mohamed Sadony* 1; Shahinaz N Hassan2; Mona Abdallah Sabry3; Amal M. El Shahawi4; Haytham S Moharrum5
1Giza
2National research centre
3Surgery and Oral Medicine department, Oral and Dental research institute, NRC
4National Research Centre, Egypt
5Medical Applications of LASER Department (MAL), National Institute of Laser Enhanced Sciences (NILES), Cairo University, Giza, Egypt.
Abstract
Abstract:

Background: This research was carried out to evaluate the impact of various forms of laser irradiation and gold nanoparticles on the bond strength of etched and adhesive-treated dentin. Forty-five extracted human upper molars had their crowns removed, and standardized cavities (3×3×3 mm) were prepared on the buccal and lingual surfaces. Samples were divided based on adhesive technique and subjected to various laser treatments, with and without gold nanoparticles. Surface hardness was measured using a Vickers hardness tester, surface roughness with a universal testing machine and nanoparticle penetration depth via scanning electron microscopy. Results showed that laser application combined with gold nanoparticles enhanced adhesive penetration into dentinal tubules, improving bond strength and durability. Group C1 showed the highest surface roughness, groups A0 and C0 had the greatest nanoparticle penetration, while B0 and D0 had the lowest. Laser irradiation, after adhesive application especially with gold nanoparticles promoted deeper material diffusion into dentin and increased both surface hardness and roughness. In conclusion, combining laser treatment with gold nanoparticles improved dentin surface characteristics and adhesive penetration, significantly enhancing restoration performance and longevity. This technique represented a promising advancement in adhesive dentistry, potentially leading to stronger and long lasting dental restorations with better clinical outcomes.
Keywords
Gold nanoparticles; Bond strength; Composite resin; Diode laser; Er; Cr:YSGG laser
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