Results: 259

Pro-inflammatory Analysis of Macrophages in Contact with Titanium Particles and Porphyromonas gingivalis

Braz. dent. j; 28 (4), 2017
Abstract During insertion of titanium dental implants, particles may shear from the implant to the periimplant region causing osteolysis, and their association with bacteria can exacerbate the inflammatory reaction. However, the association of a high invasive bacterium from the oral cavity, Porphyromonas...

Displacers improve the selectivity of phosphopeptide enrichment by metal oxide affinity chromatography

Abstract: Background: A key process in cell regulation is protein phosphorylation, which is catalyzed by protein kinases and phosphatases. However, phosphoproteomics studies are difficult because of the complexity of protein phosphorylation and the number of phosphorylation sites. Methods: We describ...

A retrospective study of titanium elastic stable intramedullary nailing in displaced mid-shaft clavicle fractures

Rev. bras. ortop; 52 (3), 2017
ABSTRACT OBJECTIVE: The aim of this study is to analyze the functional outcome following titanium elastic stable intra-medullary nailing (ESIN) for displaced mid-shaft clavicular fractures (DMCF). METHODS: A retrospective study of 60 patients between March 2009 and March 2015 was conducted. Patients ...

Development and mechanical properties of a locking T-plate

Pesqui. vet. bras; 37 (5), 2017
This study aimed to develop a locking T-plate and to evaluate its mechanical properties in synthetic models. A titanium 2.7mm T-plate was designed with a shaft containing three locked screw holes and one dynamic compression hole, and a head with two locked screw holes. Forty T-shaped polyurethane blocks,...

Manejo de mediastinitis posterior a cirugía cardíaca: reporte de caso

Med. UIS; 30 (1), 2017
RESUMEN La mediastinitis es una complicación rara pero devastadora en cirugía cardíaca, la cual incrementa los costos en salud. Los pacientes con mediastinitis posterior a cirugía cardíaca tienen alto índice de morbilidad y mortalidad. La obesidad es el único factor de riesgo perioperatorio que es...

Investigation on the biological effect of fluorine present on the surface of titanium implants: analysis of the reaction fluoride-titanium oxide

Actual. osteol; 13 (1), 2017
The aim of this work was to investigate the state of fluoride at the surface of fluoridemodified titanium implants, and to provide information to support or discard the hypothesis that fluoride ion participates in the osseointegration of implants. Titanium is coated with a 2-10 nm thick layer of stable a...

Osseointegration of titanium implants anodized with and without fluoride in the electrolyte: a study in rats

Actual. osteol; 13 (1), 2017
Based on the hypothesis that fluoride acts as a bone anabolic agent, the aim of this study was to measure in rats the osseointegration of implants (grade II titanium wire, 1 mm diameter, 4 mm long) submitted to anodic oxidation in 2 M phosphoric acid solution (control implants) or b) in 2 M phosphoric ac...

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 ...

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...

Influence of NiTi alloy on the root canal shaping capabilities of the ProTaper Universal and ProTaper Gold rotary instrument systems

J. appl. oral sci; 25 (1), 2017
Abstract Objective This study aimed to evaluate the influence of the NiTi wire in Conventional NiTi (ProTaper Universal PTU) and Controlled Memory NiTi (ProTaper Gold PTG) instrument systems on the quality of root canal preparation. Material and Methods Twelve mandibular molars with separate mesial c...