Results: 259

Rugosidade dos implantes dentários: análise comparativa da reutilização de ácidos no tratamento de superfície
Roughness of dental implants: comparative analysis of reuse of acids in surface treatment

Introdução: A importância da rugosidade para a osseointegração se dá pela correlação das interações das proteínas com a superfície do implante, a adsorção. Diferentes métodos são utilizados nos tratamentos de superfície, em que ocorre a remoção de partes da camada superficial, como o a...

Mechanical Properties of Mini-Implants Used in Extra-Radicular Anchorage

ABSTRACT Objective: To evaluate the mechanical properties of mini-implants (MIs) manufactured from stainless steel and compare them with conventional titanium-aluminum-vanadium alloy MIs. Material and Methods: The following groups were formed: G1 (n=24), 8×1.5 mm steel MIs; G2 (n=24), 12×2.0 mm steel...

Retiro de elementos de osteosíntesis en trauma maxilofacial

Rev. cir. (Impr.); 74 (3), 2022
Resumen Objetivo: Analizar la prevalencia y los factores en la remoción de elementos de osteosíntesis (OTS) de pacientes tratados quirúrgicamente debido a fracturas maxilofaciales. Materiales y Método: Estudio retrospectivo descriptivo, donde fueron incluidos todos los pacientes con diagnóstico de f...

Fatigue failure of NiTi endodontic files: scoping review

Abstract Introduction: Nickel-Titanium (NiTi) endodontic files are made of hyperelastic material with shape memory. However, these files suffer a sudden fracture during the endodontic treatment, which is considered an unfavorable prognosis. Many studies have been conducted to establish fatigue resistanc...

Avaliação da formação de biofilme bacteriano em diferentes ligas metálicas ortopédicas
Evaluation of the formation of bacterial biofilm in different orthopedic metallic alloys

Rev. bras. anal. clin; 54 (1), 2022
Objetivo: Esse trabalho objetiva identificar e caracterizar o desenvolvimento da bactéria Pseudomonas aeruginosa forte produtora de biofilme nos seguintes materiais ortopédicos: hastes de titânio e de cromo-cobalto. Método: A quantidade de biofilme formada nas amostras foi avaliada com base na quanti...

The influence of haematogenous bone marrow on the early osseointegration of a titanium implant which penetrates the endosteum

Int. j. morphol; 40 (1), 2022
SUMMARY: The utility of metallic bio-medical implants in osseous or dental affections is irrefutable. The paper aims to test the tolerance of the bone marrow to titanium implants. Titanium implants were inserted in the femur of 11-months old rabbits. The implants penetrated the endosteum, half of their l...

Photocatalytic activity, water absorption capacity, and thermal stability of white cement-based mortars with polysiloxane silicone and different doses of titanium dioxide nanoparticles

Cienc. tecnol. salud; 9 (1), 2022
White cement-based mortars in urban areas are usually discolored and altered their esthetic properties due to air pollutants. The addition of nanoparticles in these mortars can provide photocatalytic properties that can decompose pollution agents. Likewise, other hydrophobic agents have been individually...

Influence of titanium nanotubular surfaces, produced by anodization, on the behavior of osteogenic cells: in vitro evaluation

Braz. dent. sci; 25 (1), 2022
Objective: The objective of this study was to evaluate in vitro the influence of the anodized surface of Ti35Nb7Zr alloy on the behavior of osteogenic cells, for future application in biomedical implants. Material and Methods: For the development of this research, samples of commercially pure titanium (...

Postoperative anterior uveitis in a patient submitted to combined treatment with cataract surgery and iStent inject®. How to manage?

Rev. bras. oftalmol; 81 (), 2022
ABSTRACT Minimally invasive glaucoma surgeries are surgical treatment alternatives for glaucoma aimed at reducing intraocular pressure with a better safety profile compared to traditional trabeculectomy. However, in spite of less invasive techniques, complications may develop in any surgical procedure. T...

TiO2 nanoparticles and salinity stress in relation to artemisinin production and ADS and DBR2 expression in Artemisia absinthium L

Braz. j. biol; 82 (), 2022
Artemisia absinthium L. is an important herb that is widely cultivated in different parts of the world for its medicinal properties. The present study evaluated the effects of four concentrations of nanoparticles treatment (0, 10, 20 and 30 mg L-1) and NaCl salinity stress (0, 50, 100 and 150 mM NaCl) an...