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1.
J. appl. oral sci ; 28: e20200639, 2020. tab, graf, ilus
Article in English | LILACS, BBO | ID: biblio-1143146

ABSTRACT

Abstract Objective: To evaluate the surface morphology and in vitro leachability of temporary soft linings modified by the incorporation of antifungals in minimum inhibitory concentrations (MIC) for Candida albicans biofilm. Methodology:Specimens of soft lining materials Softone and Trusoft were made without (control) or with the addition of nystatin (Ny), miconazole (Mc), ketoconazole (Ke), chlorhexidine diacetate (Chx), or itraconazole (It) at their MIC for C. albicans biofilm. The surface analyses were performed using Confocal laser scanning microscopy after 24 h, 7 days, or 14 days of immersion in distilled water at 37ºC. In vitro leachability of Chx or Ny from the modified materials was also measured using Ultraviolet visible spectroscopy for up to 14 days of immersion in distilled water at 37ºC. Data (µg/mL) were submitted to ANOVA 1-factor/Bonferroni (α=0.05). Results: Softone had a more irregular surface than Trusoft. Morphological changes were noted in both materials with increasing immersion time, particularly, in those containing drugs. Groups containing Chx and It presented extremely porous and irregular surfaces. Both materials had biexponential release kinetics. Softone leached a higher concentration of the antifungals than Trusoft (p=0.004), and chlorhexidine was released at a higher concentration than nystatin (p<0.001). Conclusions: The surface of the soft lining materials changed more significantly with the addition of Chx or It. Softone released a higher concentration of drugs than Trusoft did, guiding the future treatment of denture stomatitis.


Subject(s)
Humans , Stomatitis, Denture , Denture Liners , Stomatitis, Denture/drug therapy , Surface Properties , Materials Testing , Candida albicans , Nystatin , Ketoconazole , Antifungal Agents
2.
Rev. estomatol. Hered ; 13(1/2): 5-8, ene.-dic. 2003. ilus, tab
Article in Spanish | LILACS, LIPECS | ID: lil-401653

ABSTRACT

El objetivo del presente estudio fue determinar la radiopacidad de los ionómeros de vidrio comparados con esmalte y dentina. Se utilizó un tercer molar permanente del cual se obtuvo un modelo en yeso extraduro con una preparación cavitaria oclusomesial de 3 milímetros de extensión bucopalatina y 4 milímetros de profundidad, en el cual se prepararon retauraciones indirectas utilizando los ionómeros: Ketac Molar (ESPE), Fuji IX (GC-América), Chemflex (Dentsply), Medifil IX (Promédica), Fuji II LC (GC-América) y Vitremer (3M). Se prepararon cilindros de 3 mm de grosor y 5 mm de diámetro de cada material. se tomaron registros radiográficos digitales con una distancia cono-placa de 5 centímetros de las diferentes muestras, se utilizó un captador CCD con fibra óptica (RVG by Trophy, Francia) de 41 x 25 mm. Cada imagen digital incluyó al diente con una muestra, los cilindros de cada material y uno de aluminio. Las imágenes fueron analizadas en el programa Trophy 2000. Los datos obtenidos fueron sometidos al análisis de varianza (ANOVA) donde se encontraron diferencias estadísticamente significativas entre los materiales y las estructuras dentarias. Todas las muestras presentaron una radiopacidad menor a la del esmalte. El ionómero Fuji IX fue el material más aceptable por presentar una radiopacidad intermedia entre el esmalte y dentina.


Subject(s)
Humans , Dental Enamel , Dentin , Glass Ionomer Cements , In Vitro Techniques , Radiography, Dental, Digital , Cross-Sectional Studies , Epidemiology, Descriptive
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