Results: 3070

Analysis of Interleukin 17A in periapical abscess and granuloma lesions

Braz. oral res. (Online); 30 (1), 2016
Abstract Interleukin 17A (IL-17A) is a proinflammatory cytokine responsible for the initiation and propagation of inflammation. One of its actions is the recruitment of neutrophils to the site of infection. The aim of this study was to investigate whether there is association between IL-17A expression an...

Effects of different desensitizing treatments on root dentin permeability

Braz. oral res. (Online); 30 (1), 2016
Abstract The objective of this study was to evaluate the effects of diode laser and a desensitizing dentifrice on dentin permeability. Fifty-two root dentin fragments were obtained (5 × 5mm) and treated with 24% EDTA gel. The samples were divided into 4 groups (n = 13): G1, control (no treatment); G2, d...

Cytotoxic effects of new MTA-based cement formulations on fibroblast-like MDPL-20 cells

Braz. oral res. (Online); 30 (1), 2016
Abstract The present study aimed at evaluating the cytotoxic effects of a novel cement called CER on periodontal fibroblast-like cells of mice (MDPL-20), in comparison with different formulations of Mineral Trioxide Aggregate (MTA), by means of the cell viability test (MTT) and cell morphology analysis. ...

Histomorphometric evaluation of strontium-containing nanostructured hydroxyapatite as bone substitute in sheep

Braz. oral res. (Online); 30 (1), 2016
Abstract The aim of this study is to evaluate the biocompatibility and osteoconductivity in surgical defects of sheep tibias filled with 1% strontium-containing nanostructured hydroxyapatite microspheres (SrHA), stoichiometric hydroxyapatite without strontium microspheres (HA), or blood clots. Santa Ines...

Effect of different salivary exposure times on the rehardening of acid-softened enamel

Braz. oral res. (Online); 30 (1), 2016
Abstract This in situ study assessed the effect of different times of salivary exposure on the rehardening of acid-softened enamel. Bovine enamel blocks were subjected in vitro to a short-term acidic exposure by immersion in 0.05 M (pH 2.5) citric acid for 30 s, resulting in surface softening. Then, 40 s...

Optimizing light-cured composite through variations in camphorquinone and butylhydroxytoluene concentrations

Braz. oral res. (Online); 30 (1), 2016
Abstract The use of a free-radical polymerization inhibitor, butylhydroxytoluene (BHT), and a common photo-initiator, camphorquinone (CQ), to reduce polymerization stress in dental composite was investigated in this study. Samples were prepared by mixing Bis-GMA, UDMA, and TEGDMA at a 1:1:1 ratio (wt%), ...

Quantitative transportation assessment in curved canals prepared with an off-centered rectangular design system

Braz. oral res. (Online); 30 (1), 2016
Abstract The purpose of this study was to assess the ability of an off-centered rectangular design system [ProTaper Next (PTN)] to maintain the original profile of the root canal anatomy. To this end, ProTaper Universal (PTU), Reciproc (R) and WaveOne (WO) systems were used as reference techniques for co...

Push-out bond strength of MTA HP, a new high-plasticity calcium silicate-based cement

Braz. oral res. (Online); 30 (1), 2016
Abstract This study was designed to investigate the resistance to dislodgment provided by MTA HP, a new high-plasticity calcium silicate-based cement. Biodentine and White MTA Angelus were used as reference materials for comparison. Three discs 1 ± 0.1 mm thick were obtained from the middle third of the...

Dissolution of a mineral trioxide aggregate sealer in endodontic solvents compared to conventional sealers

Braz. oral res. (Online); 30 (1), 2016
Abstract The aim of this study is to evaluate the solubility of a Mineral Trioxide Aggregate sealer (MTA-Fillapex) compared with five other sealers, calcium hydroxide (Sealapex), resin (Realseal), zinc oxide-eugenol (Tubli-Seal), and two epoxy resins (AH-26 and AH-Plus), in chloroform and eucalyptoil in ...

Effects of alpha-tocopherol on fracture resistance after endodontic treatment, bleaching and restoration

Braz. oral res. (Online); 30 (1), 2016
Abstract This study evaluated the effects of 10% alphatocopherol on the fracture resistance of endodontically treated teeth subjected to tooth bleaching with hydrogen peroxide and immediately restored with composite resin. Fifty bovine incisors were selected, including 10 sound teeth that constituted the...