Abstract | OBJECTIVE: BACKGROUND DATA: Previous literature has failed to evaluate the exclusive effect of Er,Cr: YSGG laser on the quality of smear layer and debris removal in all three segments of the root canal space. METHODS: Sixty extracted teeth were included in the study. After instrumentation, samples were divided into three experimental groups and one positive control group with no further treatment. In group 1, a final irrigation was performed using ethylenediaminetetraacetic acid ( EDTA) and sodium hypochlorite (NaOCl), sequentially. In group 2, the samples were treated with a 2.78 μm Er,Cr: YSGG laser with an output power of 1.5 W. The same laser was used in group 3, but with an output power of 2.5 W. Scanning electron microscope (SEM) images from the coronal, middle, and apical thirds of the roots were prepared and evaluated for both smear layer and debris removal by three blinded observers. RESULTS: The results showed no differences between groups 1 and 2 regarding the quality of smear layer removal in all areas. However, the 2.5 W laser failed to remove the smear layer effectively. Regarding debris removal, the EDTA and NaOCl irrigation showed significantly better outcomes (adjusted p<0.05) in all areas. CONCLUSIONS: This study raises questions about the overall cleaning abilities of Er,Cr:YSGG lasers.
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Authors | Behnam Bolhari, Sara Ehsani, Ardavan Etemadi, Mohammad Shafaq, Ali Nosrat |
Journal | Photomedicine and laser surgery
(Photomed Laser Surg)
Vol. 32
Issue 10
Pg. 527-32
(Oct 2014)
ISSN: 1557-8550 [Electronic] United States |
PMID | 25198390
(Publication Type: Journal Article, Research Support, Non-U.S. Gov't)
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Chemical References |
- Root Canal Irrigants
- Chromium
- Yttrium
- Erbium
- Edetic Acid
- Gallium
- Scandium
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Topics |
- Chromium
- Dental Pulp Cavity
(radiation effects)
- Edetic Acid
(pharmacology)
- Erbium
- Gallium
- Humans
- In Vitro Techniques
- Lasers, Solid-State
- Microscopy, Electron, Scanning
- Reproducibility of Results
- Root Canal Irrigants
(pharmacology)
- Root Canal Preparation
- Scandium
- Smear Layer
(prevention & control)
- Yttrium
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