The Effect of Silver Nano-Irrigant and Erbium Chromium: YSGG Laser on the Smear Layer Removal and Microhardness of Root Canal Dentine

Aboudoura, Moustafa; Abdel Rahman, Reem Ahmed Lutfy; Abuelezz, Ahmed Hussein

doi:10.21608/jfcr.2024.292781.1083

	The Effect of Silver Nano-Irrigant and Erbium Chromium: YSGG Laser on the Smear Layer Removal and Microhardness of Root Canal Dentine "In Vitro Study"
Journal of Fundamental and Clinical Research
Article 8, Volume 4, Issue 2, December 2024, Page 215-231 PDF (943.45 K)
Document Type: Original research articles
DOI: 10.21608/jfcr.2024.292781.1083
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Authors
Moustafa Aboudoura ¹; Reem Ahmed Lutfy Abdel Rahman²; Ahmed Hussein Abuelezz³
¹Postgraduate Researcher, Conservative Department (Endodontics Department), Faculty of Oral and Dental Medicine, Misr International University, Cairo, Egypt
²Endodontic Department, Faculty of Dentistry, Cairo University, Cairo, Egypt.
³Lecturer of Endodontics, Conservative Dentistry (Endodontics Department), Faculty of Oral and Dental Medicine, Misr International University, Cairo, Egypt.
Abstract
Background: Root canal treatment involves irrigation protocols that affected both smear layer removal and microhardness of root canal dentine. Aim: Evaluate and compare the effect of using Silver Nanoparticles irrigant (AgNP), Erbium Chromium: YSGG Laser (Er;Cr: YSGG) and their combination on the removal of smear layer and microhardness of root canal dentine compared to 5.25% NaOCl and 17% EDTA. Materials and methods: Forty dentin samples from mandibular single canaled premolars were selected, where twenty samples were allocated for each assessment. For microhardness, a baseline score was gained before irrigation using Vickers microhardness tester. Samples for each assessment were randomly allocated in 4 groups (n=5): Group 1 (5.25% NaOCl + 17% EDTA), Group 2 (Er;Cr: YSGG), Group 3 (AgNP) and Group 4 (Er;Cr: YSGG + AgNP). Smear layer removal samples were examined under Environmental Scanning Electron Microscope (ESEM) at magnification 1000X to obtain a total average score out of 5 for each sample. Similarly, microhardness samples were assessed for after irrigation scores to obtain a percent change in microhardness. Results: Group 4 showed statistically significant the highest score in the amount of smear layer left behind after irrigation than 3 and 2. Groups 1 and 4 reported statistically significant less percent decrease in microhardness than groups 2 and 3. Conclusion: Neither AgNP and Er;Cr: YSGG per se nor their combination was effective in removing smear layer. AgNP and Er;Cr: YSGG per se have decreased the microhardness of root canal dentine while their combination was similar to 5.25% NaOCl and 17%EDTA.
Keywords
Smear Layer Removal; Microhardness; Silver Nanoparticles; Erbium Chromium: YSGG Lasers


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The Effect of Silver Nano-Irrigant and Erbium Chromium: YSGG Laser on the Smear Layer Removal and Microhardness of Root Canal Dentine "In Vitro Study"