Results: 952

Sucrose induced dentin demineralization in a microcosm biofilm model

The aim of this in vitro study was to assess the root dentin demineralization caused by a microcosm biofilm model that has been exposed to sucrose in different ways. Materials and Methods: Saliva of two volunteers was inoculated into an artificial medium for biofilm growth and dentin blocks were immersed...

Cytotoxicity Evaluation of Root Canal Sealers Using an In Vitro Experimental Model with Roots

Braz. dent. j; 28 (2), 2017
Abstract The aim of the present study was to evaluate the cytotoxicity of root canal sealers under conditions closely resembling a clinical reality. A primary human fibroblast cell line was seeded in 24-well acrylic plates with Dulbecco’s modified Eagle’s medium supplemented with 10% serum fe...

Atividade antibacteriana de tubos endotraqueais revestidos com dióxido de titânio padrão e dopados com nitrogênio: um estudo in vitro

RESUMO Objetivo: Avaliar a atividade antibacteriana contra Staphylococcus aureus e Pseudomonas aeruginosa de dois revestimentos endotraqueais com nanopartículas e fotocatálise sob luz visível. Métodos: Testaram-se dois tipos de nanopartículas de titânio: anatase padrão (TiO2) e TiO2 nano-dopada ...

Efecto inotrópico y cronotrópico del propranolol sobre aurículas extraídas de ratas con insulina-resistencia inducida por fructosa

Invest. clín; 58 (1), 2017
La insulina-resistencia (IR) es una deficiencia metabólica asociada princi palmente con diabetes tipo 2 y comúnmente relacionada a la etiopatogenia de enfermedades cardiovasculares, siendo el factor determinante del síndrome metabólico. La investigación pretende conocer los efectos cronotrópico e i...

Goat umbilical cord cells are permissive to small ruminant lentivirus infection in vitro

Braz. j. microbiol; 48 (1), 2017
Abstract Small ruminant lentiviruses isolated from peripheral blood leukocytes and target organs can be propagated in vitro in fibroblasts derived from goat synovial membrane cells. These cells are obtained from tissues collected from embryos or fetuses and are necessary for the establishment of the fibr...

Anatomy and micromorphometric analysis of leaf Catasetum x apolloi Benelli & Grade with addition of potassium silicate under different light sources

Braz. j. biol; 77 (1), 2017
Abstract The aim of this study was to compare vitroplants Catasetum x apolloi grown under natural light and artificial light and different concentrations of potassium silicate, providing data on the anatomical differentiation that aids the acclimatization process of this species. Plants from in vitro see...

Capacidade de selamento e penetração intratubular do MTA Fillapex e do AH Plus em dentes humanos

Introdução: O MTA é um importante material de uso na odontologia, com boas propriedades biológicas. As respostas experimentais aos cimentos endodônticos que utilizam este composto no selamento e preenchimento do sistema de canais radiculares, aliados a uma boa instrumentação e limpeza, podem ser i...

Microscopic evaluation of implant platform adaptation with UCLA-type abutments: in vitro study

Introduction: The fit between abutment and implant is crucial to determine the longevity of implant-supported prostheses and the maintenance of peri-implant bones. Objective: To evaluate the vertical misfit between different abutments in order to provide information to assist abutment selection. Materi...

Estudo comparativo in vitro da resistência ao desgaste entre o cimento de ionômero de vidro pó/líquido e o encapsulado

Introdução: Os cimentos de ionômero de vidro possuem limitações devido à sua baixa resistência mecânica, a qual está diretamente relacionada com a proporção pó/líquido e a sua manipulação. Com o intuito de padronizar o proporcionamento e a manipulação, surgiram os cimentos de ionômero d...

Role of Candida species from HIV infected children in enamel caries lesions: an in vitro study

J. appl. oral sci; 25 (1), 2017
Abstract Objectives This study analyzed the capacity of Candida spp. from dental biofilm of HIV infected (HIV+) children to demineralize primary molar enamel in vitro by Transversal Microhardness (TMH), Polarized Light Microscopy (PLM) and the quantity of calcium ions (Ca2+) released from the enamel. ...