In vitro evaluation of surface roughness of titanium abutments after air polishing with different abrasive powders.

Objectives: The purpose of this study was to evaluate the effects of air polishing with sodium bicarbonate and erythritol powders on surface roughness and morphological changes in titanium abutments.

Methods: A total of 45 grade V titanium discs were divided in three groups: Group A (Control) air polished with air/water; Group B, air polished with sodium bicarbonate powder; and Group C, air polished with erythritol powder. After air polishing, the samples' roughness (S) in micrometres were analysed with an optical profilometer.

[Validation of the Oral Impacts on Daily Performance index among the Portuguese population].

The Oral Impacts on Daily Performance (OIDP) questionnaire is an oral health-related quality of life indicator. It was developed in order to assess the influence of oral conditions on the self-ability to execute daily activities. The main goal of this research was to validate the OIDP for the Portuguese population aged 18 years and above.

Seed and Foliar Application of Amino Acids Improve Variables of Nitrogen Metabolism and Productivity in Soybean Crop.

The application of amino acids in crops has been a common practice in recent years, although most of the time they are associated with products based on algae extracts or on fermented animal or vegetable wastes. However, little is known about the isolated effect of amino acids on the development of crops. Therefore, the objective of this research was to evaluate the effect of the application of isolated amino acids on the in some steps of the soybean nitrogen metabolism and on productivity.

Foliar and Seed Application of Amino Acids Affects the Antioxidant Metabolism of the Soybean Crop.

In recent years, the application of natural substances on crops has been intensified in order to increase the resistance and yield of the soybean crop. Among these products are included plant biostimulants that may contain algae extracts, amino acids, and plant regulators in their composition. However, there is little information on the isolated effect of each of these constituents.

study of the effect of an essential oil and a delmopinol mouth rinse on dental plaque bacteria.

Context: Mouthrinses are used, by many of our patients, as a complement to daily dental hygiene routine. The use of a toothbrush and an interproximal cleaning method may not be enough to control dental plaque. Essential oils and delmopinol mouth rinses are effective for the prevention of dental caries and gingivitis.

Susceptibility of Anthonomus grandis (cotton boll weevil) and Spodoptera frugiperda (fall armyworm) to a cry1ia-type toxin from a Brazilian Bacillus thuringiensis strain.

Different isolates of the soil bacterium Bacillus thuringiensis produce multiple crystal (Cry) proteins toxic to a variety of insects, nematodes and protozoans. These insecticidal Cry toxins are known to be active against specific insect orders, being harmless to mammals, birds, amphibians, and reptiles. Due to these characteristics, genes encoding several Cry toxins have been engineered in order to be expressed by a variety of crop plants to control insectpests.

Production of transglutaminase from Bacillus circulans on solid-state and submerged cultivations.

A Bacillus circulans strain, isolated in the Amazon basin, produced a transglutaminase (EC 2.3 x 2.13) in both submerged and solid-state cultivation.