A New α + β Ti-15Nb Alloy with Low Elastic Modulus: Characterization and In Vitro Evaluation on Osteogenic Phenotype.

This study aimed to produce Ti-15Nb alloy with a low elastic modulus, verify its biocompatibility, and determine whether the alloy indirectly influences cellular viability and morphology, as well as the development of the osteogenic phenotype in cells cultured for 2, 3, and 7 days derived from rat calvarias. Two heat treatments were performed to modify the mechanical properties of the alloy where the Ti-15Nb alloy was heated to 1000 °C followed by slow (-5 °C/min) (SC) and rapid cooling (RC). The results of structural and microstructural characterization (XRD and optical images) showed that the Ti-15Nb alloy was of the α + β type, with slow cooling promoting the formation of the α phase and rapid cooling the formation of the β phase, altering the values for the hardness and elastic modulus.

[Periodic occupational examination: an opportunity for diagnosis and monitoring of chronic noncommunicable diseases in men].

The study aimed to estimate the prevalence of arterial hypertension as the principal marker of chronic noncommunicable diseases (NCDs) and to identify associated modifiable factors in male workers. Baseline data were used from a longitudinal study with a sample of 1,024 male workers 18 years or older in a municipality in Northeast Brazil. The marker for NCDs was arterial hypertension, defined as systolic pressure ≥ 140mmHg and/or diastolic pressure ≥ 90mmHg and/or prior diagnosis of arterial hypertension and/or use of antihypertensive medication.

Color stability of an artificially aged nanofilled composite resin post-cured with different techniques.

Post-cured composite resins exhibit improvements in physical and mechanical properties due to additional polymerization conversion. However, the post-curing techniques might influence the color stability of composite resin materials. Thus, this study evaluated the color stability of a nanofilled composite resin (Filtek Z350 XT - 3M ESPE) subjected to different post-curing techniques.

Exoantigens of spp. Promote Proliferation and Modulation of Human and Mouse Pulmonary Fibroblasts.

Paracoccidioidomycosis (PCM) is a systemic granulomatous fungal infection caused by thermally dimorphic fungi of the genus . Endemic in Latin America, PCM presents with high incidence in Brazil, Colombia, and Venezuela, especially among rural workers. The main clinical types are acute/subacute (AF) form and chronic form (CF).

Development of novel Ti-Mo-Mn alloys for biomedical applications.

Due to excellent biocompatibility and corrosion resistance, the application of titanium alloys in orthopedic and dental implants has been increasing since the 1970s. However, the elasticity of these alloys as measured by their Young's modulus is still about two to four times higher than that of human cortical bone. The most widely used titanium alloy for biomedical applications is Ti-6Al-4V, however, previous studies have shown that the vanadium used in this alloy causes allergic reactions in human tissue and aluminum, also used in the alloy, has been associated with neurological disorders.