objective: optimal dentin bonding is not always obtained in clinical practice due to func-tional forces. these forces may provide stresses throughout the tooth and restorative sys-tem, which in turn may affect the adhesive bond. this experimental study evaluated the effect of load cycling on bond strength of self-etch systems. materials and methods: one third of the coronal portions of 48 intac...

background and objectives: there is a profound inclination among people toward consumption of herbs and herbal products. some of these products are harmful while health-promoting potentials of some others should be discovered. in the present study the antibacterial, antioxidant, acute and subchronic and cancer cell toxicity of methanolic and aqueous extracts of rosa damascena mill. was studied....

introduction: antibiotics as a  type of pharmaceutical compounds are widely used in modern medicine and veterinary industries. they enter the environment in different ways, including agricultural runoff, direct discharge of urban wastewater treatment or human waste, direct disposal of medical, veterinary industrial waste and etc. antibiotics have been able to influence the microbial population....

the aim of present study was to prepare gelatin nanoparticle for drug and gene delivery applications. these nanoparticles were prepared by two-step desolvation method. the body distribution of colloidal drug delivery systems was mainly influenced by two physicochemical properties namely particle size and surface characteristics. the influence of several factors on the fabrication process includ...

The aim of present study was to prepare gelatin nanoparticle for drug and gene delivery applications. These nanoparticles were prepared by two-step desolvation method. The body distribution of colloidal drug delivery systems was mainly influenced by two physicochemical properties namely particle size and surface characteristics. The influence of several factors on the fabrication process includ...

in the present study the effects of both cck receptor agonists and antagonists on antinociception induced by morphine in the tail-flick test have been evaluated. m orphine induced dose-dependent antinociception in mice. the response of morphine was potentiated by sulfated cholecystokinin-8 (cck-8s) but not by unsulfated cholecystokinin-8 (cck-8u). the cck receptor antagonists mk-329 and l-365, ...

backgrounds: all of long-acting β2-agonists are beneficial in maintenance treatment of asthma but their use in relieving acute asthma attacks is not well known. the aim of this study was to compare rapid bronchodilatory effects of salmeterol and formoterol in patient with moderate to severe asthma. methods: it was a randomized, double blind, cross-over study on 60 patients with moderate to seve...

objective: despite the strong relationship between sugars, mutans streptococcilevels and caries, relatively, little research has been carried out on one of the factors that may influ-ence sugar intake; namely sweet preference. the objective of the present study was to ex-plore the association between sweet preference and the levels of dental caries in 6-12 year-old schoolchildren in hamedan. ma...