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Among 47 patients with stroke evaluated clinically and videofluoroscopically, one-half aspirated. Patients with combined cerebral-brainstem strokes with bilateral cranial nerve signs were at greatest risk, but aspiration also occurred in the context of unilateral signs. Dysphonia was the common clinical characteristic of aspirating patients. Single chest(More)
The purpose of this study was to measure the permeability of primary molar and permanent premolar dentin at various thicknesses from the pulp and to correlate permeability with the tubule density and diameter of dentin using SEM. The data were examined for statistically significant differences using two-way analysis of variance, multiple comparison Scheffe,(More)
We studied 23 individuals (16 men, seven women; mean age 57 years) who had brainstem strokes confirmed by computed tomography of the head or magnetic resonance imaging. Videofluoroscopic modified barium-swallowing examination showed aspiration in 15 of 23 patients. Of the 15 aspirating patients, the majority had bilateral strokes with multiple lesion loci,(More)
We validated the predictive accuracy of an "old" regression model in a "new" sample of bilateral stroke patients (N = 38). Abnormal gag reflex and impaired voluntary cough accurately predicted radiographically verified aspiration in both samples. A final model, using both samples, grouped patients into three risk strata: low risk of 14% (cough and gag(More)
Most microleakage studies involve quantitating the magnitude of movement of a tracer molecule through a gap between restorative materials and the wall of cavity preparations. The present microscopic study examined the migration of silver nitrate into the interface between dentin and five different dentin bonding agents used to restore class 5 cavities, in(More)
The permeability of dentin to adhesive agents is of crucial importance in obtaining good dentinal bonding. In those systems that remove the smear layer, the opportunity exists for resin to infiltrate both tubules and intertubular dentin. Resin penetration into tubules can effectively seal the tubules and can contribute to bond strength if the resin bonds to(More)
Aspiration is a common problem following stroke, resulting in feeding difficulties and aspiration pneumonia. Despite past studies using clinical assessments and computed tomographic (CT) scans of the head, the correlation of stroke location with aspiration remains unclear. Since brain magnetic resonance imaging is more sensitive than CT for many stroke(More)
OBJECTIVES The demand for restoration of root dentine defects such as cervical erosion and root caries has significantly increased recently, but there is limited information on the performance of the adhesive resins to radicular dentine. The purpose of this study was to measure the regional tensile bond strength (TBS) of composite bonded to human root and(More)
We have recently demonstrated that rat liver can synthesize and secrete corticosteroid-binding globulin (CBG). The present study extends these observations and examines the hormonal regulation of hepatic CBG production. Male rats were pretreated by adrenalectomy and/or glucocorticoid or estrogen administration and the rate of CBG production was measured in(More)