Morphological Changes Produced by Acid Dissolution in Er:YAG Laser Irradiated Dental Enamel

作者：Manuela Diaz Monroy Jennifer; Contreras Bulnes Rosalia^*; Fernando Olea Mejia Oscar; Emma Rodriguez Vilchis Laura; SAnchez Flores Ignacio

来源：Microscopy Research and Technique, 2014, 77(6): 410-414.

DOI：10.1002/jemt.22360

• Er:YAG laser
• SEM
• morphological changes
• acid dissolution

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.

• 出版日期2014-6