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Veldtman Gruschen Possner Mathias Mohty Dania Issa Ziyad Alsaleh Monerah AlMarzoog AlJuhara Thaar Emmanual Shisamma Salam Yezan AlHabdan Mohammed Saleh Alsaied Tarek Rathod Rahul H. Siblini Ghassan Vriz Olga 《The international journal of cardiovascular imaging》2021,37(9):2651-2660
The International Journal of Cardiovascular Imaging - Abnormal atrial mechanics in biventricular circulations have been associated with elevated left heart filling pressures. Similar associations... 相似文献
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Ahoud AlShamrani Alhanouf AlHabdan Malak AlDaweesh Rahaf bin Hamdan Randa AlRajhi 《Saudi Dental Journal》2021,33(8):1126-1132
ObjectiveIncreasing enamel resistance to acid may be useful for preventing cavitation and could reduce changes in the enamel’s microhardness. Topical fluoride application and laser irradiation promote acid resistance of dental substrates. The aim of the study was to assess the efficacy of erbium, chromium: yttrium-scandium-gallium-garnet laser irradiation in combination with fluoride application to control enamel erosion.DesignSixty human premolar specimens were prepared (N = 60) and were randomly assigned to 5 groups, twelve specimens in each group (n = 12/group) according to surface treatment. The groups were as follows: group 1 (C): control with no treatment; group 2 (F): application of 1.23% acidulated phosphate fluoride gel alone; group 3 (L): laser irradiation alone; group 4 (F+L): acidulated phosphate fluoride gel followed by laser irradiation; group 5 (L+F): laser irradiation followed by acidulated phosphate fluoride gel. All the specimens were eroded 10 min in citric acid. Baseline measurements were performed using a Vickers microhardness tester before surface treatment. Subsequently, all specimens were subjected to a 60 min erosion-remineralization cycle for five days followed by measurements of the final surface microhardness. Statistical comparisons were performed by a one-way analysis of variance and Tukey’s post hoc analysis.ResultsThe control, laser, and fluoride + laser groups showed a statistically significant decrease in microhardness values between baseline and post-erosion measurements (P < 0.05), indicating that these treatments could not prevent erosion progression. However, the fluoride and laser + fluoride groups showed a significant increase in microhardness values compared to baseline.ConclusionsOur results suggest that compared to that of the control group, acidulated phosphate fluoride application as well as laser irradiation prior to fluoride application increased enamel surface microhardness and prevented the progression of enamel erosion. 相似文献
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A 14-year-old boy presented with an unusual bulging chest noted to be increasing slowly over the last few years. He had no
other complaints. Cardiac echocardiography and cardiac magnetic resonance imaging (MRI) showed aneurysmal dilation of the
ascending aorta with moderate aortic valve insufficiency and moderate pericardial effusion. The boy underwent reconstruction
of his ascending aorta in the form of a Bentall procedure using a 25-mm Carbomedic valve conduit. 相似文献
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