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Morphological changes produced by acid dissolution in Er:YAG laser irradiated dental enamel
Author(s) -
Manuela DíazMonroy Jennifer,
ContrerasBulnes Rosalía,
Fernando OleaMejía Oscar,
Emma RodríguezVilchis Laura,
SÁnchezFlores Ignacio
Publication year - 2014
Publication title -
microscopy research and technique
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.536
H-Index - 118
eISSN - 1097-0029
pISSN - 1059-910X
DOI - 10.1002/jemt.22360
Subject(s) - enamel paint , irradiation , dissolution , scanning electron microscope , laser , morphology (biology) , materials science , er:yag laser , nuclear chemistry , dentistry , chemistry , radiochemistry , composite material , optics , medicine , physics , biology , nuclear physics , genetics
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/cm 2 ), 200 mJ (25.5 J/cm 2 ), and 300 mJ (38.2 J/cm 2 ), 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.