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排序方式: 共有265条查询结果,搜索用时 15 毫秒
81.
Matheus Souza
DDS MS Doglas Cecchin
DDS MS PhD Joao V.B. Barbizam
DDS MS PhD José F.A. Almeida
DDS MS PhD Alexandre Augusto Zaia
DDS MS PhD Brenda P.F.A. Gomes
DDS MS PhD Caio C.R. Ferraz
DDS MS PhD 《Australian endodontic journal : the journal of the Australian Society of Endodontology Inc》2013,39(3):107-111
To evaluate the colour change in enamel and dentine, promoted by interaction of 2% chlorhexidine gluconate (CHX) with 5.25% sodium hypochlorite (NaOCl) and 17% ethylenediaminetetraacetic acid (EDTA). Fragments containing enamel and dentine were obtained from the crowns of extracted bovine incisors. Before and after immersion of the samples in the substances, they were evaluated with reference to the colour of the enamel and dentine. The values obtained in numerical scores were subjected to statistical analysis using Wilcoxon test. A colour change in the enamel and dentine in groups treated with CHX gel + NaOCl and CHX gel + NaOCl + EDTA, and a change in colour only in the dentine in groups treated with CHX solution + NaOCl and CHX solution + NaOCl + EDTA. When used prior to NaOCl, CHX has the ability to induce a colour change in dental structures. 相似文献
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Renal stone disease treated with extracorporeal shock wave lithotripsy: short-term observations in 100 patients 总被引:1,自引:0,他引:1
Grantham JR; Millner MR; Kaude JV; Finlayson B; Hunter PT d; Newman RC 《Radiology》1986,158(1):203-206
The immediate posttreatment findings are described for 100 patients who underwent extracorporeal shock wave lithotripsy (ESWL) for renal stone disease. Excretory urography was performed both before and 24-72 hours after ESWL. In 21 patients, stones were completely disintegrated, and stone fragments were passed rapidly. Stones were fragmented but not passed entirely within 24-72 hours in 76 patients. There was no appreciable effect on stones in three patients. In nine of 27 patients who had mild to severe ureteral obstruction caused by stone fragments, relief procedures (retrograde ureteral manipulation or percutaneous stone extraction) were necessary. Overall, 70 patients experienced successful stone disintegration without complications. Continued investigation is needed to determine prevalence of residual calculi, reversibility of acute effects of ESWL on the kidney, and possible development of late hypertension. 相似文献
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Lucio RA; Garcia JV; Ramon Cerezo J; Pacheco P; Innocenti GM; Berbel P 《Cerebral cortex (New York, N.Y. : 1991)》1997,7(4):303-316
Previous studies have shown that hypothyroidism modifies the development of
callosal connections. In particular, adult hypothyroid rats have fewer
callosally projecting neurons in layers II-III of the auditory cortex and
more in layer V. This might be due to disturbance in the
stabilization/elimination of juvenile callosal axons, or to abnormal
neuronal migration during cortical histogenesis. To distinguish between
these possibilities we have studied the distribution of callosally
projecting auditory neurons at different postnatal ages using retrogradely
transported tracers, and the cortical neurogenetic gradients using DNA
labelling with 5-bromo-2'- deoxiuridine. In hypothyroid rats, injected at
postnatal day 5 (P5) and killed at P18-20, most of the neurons retrogradely
labelled from the contralateral hemisphere are distributed between layers
IV and VI, as in older rats. In hypothyroid rats, many neurons are at
locations inappropriate for their birthdate, including the subcortical
white matter, resulting in more diffuse radial neurogenetic gradients.
These results indicate that early induced hypothyroidism alters neuronal
migration and prevents the establishment of callosal connections from
cortical layers II-III.
相似文献
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BACKGROUND: Medium chain acyl-CoA dehydrogenase (MCAD) deficiency is a common disorder of fatty acid oxidation in north west Europe. It is very variable in its clinical consequences and is believed to be considerably underdiagnosed. OBJECTIVE: To investigate the diagnosis and outcome of MCAD deficiency in the UK. METHOD: A prospective surveillance study through the British Paediatric Surveillance Unit. RESULTS: Of 62 affected individuals identified, 57 were from England, giving an incidence of 4.5 cases/100,000 births. Forty six cases presented with an acute illness (10 of whom died), 13 cases were identified because of family history, and three for other reasons. Six of the survivors were neurologically impaired. CONCLUSIONS: Despite increased clinical awareness, the mortality and morbidity from MCAD deficiency remain high. The frequency and severity of the disease support the case for the introduction of universal neonatal screening in England and Scotland. 相似文献
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