Enamel surface roughness after orthodontic adhesive removal: an in vitro study comparing four clearance methods.

Purpose: Adhesive remnants removal is the last key step influencing orthodontic treatment outcomes. Four different clearance methods (CM) of orthodontic adhesive were evaluated to determine, which achieved the smoothest enamel surface in the shortest time.

Materials And Methods: 75 intact premolars extracted for orthodontic purposes were included, sixty had an orthodontic bracket bonded and subsequently removed, and fifteen served as the control group.

Oral health in youth with visual impairment: A longitudinal survey.

This longitudinal survey aims to demonstrate improvement in oral hygiene among a group of youth with visual impairment (VI) achieved by repeated oral hygiene training, compare their progress with healthy peers (CG) and assess their oral health knowledge. In 100 VI (55♀, 45♂; ± 17.8 years) and 45 CG (23♀, 22♂; ± 17.

Congestive heart failure in a veiled chameleon (): A case report.

A two-year-old male veiled chameleon () was referred for a gular oedema and bilateral blepharoedema. The echocardiography revealed a ventricular hypertrophy, pericardial effusion, and valvular regurgitation of the right atrioventricular valve. Treatment with hydrochlorothiazide, enalapril, and carvedilol was commenced.

The influence of land-use on tropical soil chemical characteristics with emphasis on aluminium.

Composition of soil vegetation cover and land management directly influences the cycling of chemical elements and is a key factor for soil biogeochemistry and also Al behaviour. Moreover, Al is an important factor limiting the growth of cultural plants. Our results are based on long-term observations of soils translocated from selected small areas of eight 1 ha plots of different land-use gradient, with identical geological, climatic and geographical conditions, located in the North of Congo Basin (near Mbalmayo, Cameroon).

Abnormal myocardial and coronary vasculature development in experimental hypoxia.

Oxygen availability is one of the necessary prerequisites for normal embryonic development. In our previous study we found that quail embryos incubated under hypoxic conditions (16% O(2)) die at embryonic day (ED) 9 with signs of heart failure. By ED4 and ED6 we found thinner ventricular wall and increased capillary density.

Hemocompatible albumin-heparin coatings prepared by the layer-by-layer technique. The effect of layer ordering on thrombin inhibition and platelet adhesion.

Using the layer-by-layer technique, ELISA polystyrene plates were coated with multilayer assemblies of albumin with various heparins or with multilayer assemblies of albumin. The coatings containing heparin were tested for their ability to potentiate thrombin inhibition by antithrombin and its dependence on the layer arrangement. The order of activities of surface bound heparins matched their order in solution; however their activity was reduced to less than 10% due to binding.

Oxidative stress and platelet function in multiple myeloma and renal insufficiency: clinical relations of different tests.

Hemorrhagic tendency is frequent in uremic patients and is often associated with prolonged bleeding time and decreased platelet functions in vitro. Similarly, in multiple myeloma, platelet functions are affected, mainly by the inhibitory effect of paraprotein. We have studied patients with renal insufficiency and multiple myeloma to investigate the possible relation of oxidative stress to platelet functions, adhesion and aggregation activity.