Morphological changes produced by acid dissolution in Er:YAG laser irradiated dental enamel

ABSTRACT Several scientific reports have shown the effects of Er:YAG laser irradiation on enamel morphology. However, there is lack of information regarding the morphological alterations produced by the acid attack on the irradiated surfaces. The aim of this study was to evaluate the morphological c...

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Published in:Microscopy research and technique 2014-06, Vol.77 (6), p.410-414
Main Authors: Manuela Díaz-Monroy, Jennifer, Contreras-Bulnes, Rosalía, Fernando Olea-Mejía, Oscar, Emma Rodríguez-Vilchis, Laura, SÁnchez-Flores, Ignacio
Format: Article
Language:English
Subjects:
acid dissolution
Adolescent
Dental Enamel - radiation effects
Dental Enamel - ultrastructure
Er:YAG laser
Humans
Lactic Acid - pharmacology
Lasers, Solid-State - therapeutic use
Microscopy, Electron, Scanning
morphological changes
SEM
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Summary:ABSTRACT Several scientific reports have shown the effects of Er:YAG laser irradiation on enamel morphology. However, there is lack of information regarding the morphological alterations produced by the acid attack on the irradiated surfaces. The aim of this study was to evaluate the morphological changes produced by acid dissolution in Er:YAG laser irradiated dental enamel. Forty‐eight enamel samples were divided into four groups (n = 12). GI (control); Groups II, III, and IV were irradiated with Er:YAG at 100 mJ (12.7 J/cm2), 200 mJ (25.5 J/cm2), and 300 mJ (38.2 J/cm2), respectively, at 10 Hz without water irrigation. Enamel morphology was evaluated before‐irradiation, after‐irradiation, and after‐acid dissolution, by scanning electron microscopy (SEM). Sample coating was avoided and SEM analysis was performed in a low‐vacuum mode. To facilitate the location of the assessment area, a reference point was marked. Morphological changes produced by acid dissolution of irradiated enamel were observed, specifically on laser‐induced undesired effects. These morphological changes were from mild to severe, depending on the presence of after‐irradiation undesired effects. Microsc. Res. Tech. 77:410–414, 2014. © 2014 Wiley Periodicals, Inc.
ISSN:1059-910X
1097-0029
DOI:10.1002/jemt.22360