Publications by authors named "Fernanda Silva Fernandes"
Objective: The purpose of this study was to analyze the effects of agitation of 17% ethylenediaminetetraacetic acid (EDTA) with 1064 nm Nd:YAG and 980 nm diode laser on root dentin microhardness and superficial roughness (with confocal laser scanning microscopy [CLSM]).
Background Data: Root canal irrigants are used in an attempt to minimize the negative effects of smear layer.
Materials And Methods: Twenty-five bovine roots were sectioned longitudinally and divided into five groups (n=10 each): (1) deionized water, (2) 17% EDTA, (3) 17% EDTA with 60 sec manual agitation, (4) 17% EDTA with 50 sec diode laser (2 W) agitation, and (5) 17% EDTA with 50 sec Nd:YAG (1.
Clinical evidence has shown that stress may be associated with alterations in masticatory muscle functions. Morphological changes in masticatory muscles induced by occlusal alterations and associated with emotional stress are still lacking in the literature. The objective of this study was to evaluate the influence of acute stress on metabolic activity and oxidative stress of masseter muscles of rats subjected to occlusal modification through morphological and histochemical analyses.
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- The study aimed to evaluate the long-term effects of Nd:YAG laser treatment on primary enamel from children at high risk for cavities, focusing on chemical and structural changes.
- Researchers analyzed 186 primary teeth using various techniques, including scanning electron microscopy (SEM) and infrared spectroscopy, to assess the enamel's properties after irradiation.
- Findings indicated that laser treatment increased enamel hardness and reduced cavity formation compared to control groups, demonstrating that Nd:YAG laser creates significant chemical modifications to enamel that could prevent demineralization.
Chemical solutions play important roles in endodontic treatment and promote ultrastructural changes in dentin surface. The aim of this study was to quantify root canal roughness at different concentrations of calcium hypochlorite (Ca(OCl)2) and sodium hypochlorite (NaOCl) by confocal laser scanning microscopy (CLSM). Fifty-two human mandibular premolars were sectioned and randomly organized into thirteen groups (n=8): saline (control); 1%, 2.
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