Publications by authors named "B A Vela"
Objectives: This study aimed to verify if composites containing dicalcium phosphate dihydrate particles (DCPD) are able to induce dentin remineralization in vitro. Additionally, the mechanical properties of the materials were tested.
Methods: Four composites with 50 vol% inorganic content and 1 BisGMA: 1 TEGDMA (mols) were prepared, with different DCPD:glass ratios (50:0, 40:10, 30:20 and 0:50).
Objective: To investigate the effect of hydrophilic/permeable polymer matrices on water sorption/solubility (WS/SL), Ca release, mechanical properties and hydrolytic degradation of composites containing dicalcium phosphate dihydrate (DCPD) particles.
Methods: Six composites were tested, all with 10 vol% of glass particles and either 30 vol% or 40 vol% DCPD. Composites containing 1BisGMA:1TEGDMA in mols (at both inorganic levels) were considered controls.
Article Synopsis
- The study examined how handling, degree of conversion, mechanical performance, and calcium release in composites are influenced by the mix of dicalcium phosphate dihydrate (DCPD) and glass content.
- Twenty-one composite formulations were tested for their viscosity, degree of conversion, fracture toughness, and calcium release over 14 days, using specific analytical techniques and statistical analysis.
- Results indicated that increasing the DCPD: glass ratio improved viscosity and degree of conversion, while a DCPD content of up to 30 vol% provided the best balance of mechanical properties and calcium release, with a warning that higher DCPD levels could compromise mechanical integrity.
Objective: The COVID-19 protective motivation scale (EMP-COVID-19) has been developed for the assessment of protective motivation. This study aims to examine the psychometric properties of the EMP-COVID-19 for its application in the Peruvian community.
Methods: This is an observational, cross-sectional, instrumental design study, 483 adults (≥18 years) participated in the study, in 2 samples of 81 and 402 participants from the different macro-regions of Peru through an online survey using non-probabilistic sampling.
Aim: Cardiac myxomas are uncommon tumors and have a wide clinical spectrum. Their diagnosis can therefore be elusive because symptoms are nonspecific and misleading. Our aim was to characterize and analyze the clinical findings in patients presenting with cardiac myxomas.
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