François Wenger

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OBJECTIVES Impedance spectroscopy is a non-destructive, quantitative method, commonly used nowadays for industrial research on cement and concrete. The aim of this study is to investigate the interest of impedance spectroscopy in the characterization of setting process of dental cements. METHODS Two types of dental cements are used in this experiment: a(More)
OBJECTIVE To predict severe hyperkalemia from single electrocardiogram (ECG) tracings. METHODS Ten conditioned dogs each underwent this protocol three times: Under isoflurane anesthesia, 2 mEq/kg/hr of potassium chloride was given intravenously until P-waves were absent from the ECG and ventricular rates decreased > or =20% in < or =5 minutes. Serum(More)
OBJECTIVES The aim of our in vitro study was to quantitatively evaluate dentin microleakage by means of the impedance technique. METHODS Forty-five 2 mm thick dentin disks were embedded in a hollow polyurethane resin cylinder. The system used was a 'like' permeation cell. Standard cylindrical cavities (1.5 mm deep, 3.5 mm diameter) were prepared on the(More)
Assessment of pediatric temperature is a multistep task involving both manipulative and cognitive skills. Emergency Physicians typically assume that parents possess these skills, but this assumption has never been fully tested. A prospective survey was conducted of caretakers of children < or = 36 months of age presenting to an inner city emergency(More)
OBJECTIVES The aim of our in vitro study was to contribute to an elaboration of a protocol to evaluate the permeability of dentin and the effect of different acid conditioners by means of the electrochemical impedance technique. MATERIALS AND METHODS Twenty-four 1.1mm thick dentin disks were embedded in a hollow polyurethane resin cylinder. The system(More)
Studying fresh aspiration material from the posterior fornix and cervix, by Interference Contrast Microscopy (Nomarski) is a good method of cytologic examination. It is shown how most cell types can be observed, just as they can be by the classical Papanicolaou staining. Normal and abnormal, even dysplastic and malignant cells can be recognized. This method(More)
PURPOSE To evaluate quantitatively the effect of six contemporary self-etching systems on dentin permeability by means of the electrochemical impedance technique and to correlate these results with their acidity. METHODS 36 1.1 mm thick dentin disks were embedded in a hollow polyurethane resin cylinder. The system used was a "like" permeation cell: two(More)
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