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artículo
Publicado 2021
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Objetive: To determine the photodynamic effect of methylene blue (MB) and toluidine blue (TBO) activated with therapeutic laser on Streptococcus mutans and Candida albicans biofilms. Material and methods: Sixty-one biofilm samples were analyzed in brain heart culture media (BHI) for 6 days, the samples were divided into 4 groups and immersed in: experimental group in 0.01% MB and 0.05% TBO, positive control group in 0.12% chlorhexidine gluconate (CHX) and negative control group in 0.9% sodium chloride (NaCl). The MB and TBO samples were irradiated with therapeutic laser with a wavelength of 660 nm, and 9 J/cm2 of power, each enamel block was in post-irradiation culture. The samples were cultured separately for the S. mutans and C. albicans strains, the method used was that of serial dilutions for the quantification of CFU after 5 days of culture. For the analysis, Student's T and Anov...
2
artículo
Publicado 2025
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Objective: To validate a virtual reality (VR) model designed for neuroanatomy learning by evaluating its impact in terms of realism, usefulness, practicality, enjoyment, and recommendation. Materials and methods: A descriptive, instrument-validation study was conducted to assess the model through expert judgment in the field of neuroscience. Forty-two professionals in neurology, neurosurgery, and psychiatry participated in the study. The system was rated for realism, usefulness, practicality, enjoyment, and recommendation using a structured 13-item questionnaire based on a five-point Likert scale. The VR model, developed through advanced photogrammetry, enabled interactive manipulation of three-dimensional (3D) brain structures. Participants employed VR headsets and hand controllers to explore, in detail, the anatomical and functional relationships within the brain. Results: Participants...