the aim of this study was to assess the surface of yttrium-stabilized tetragonal zirconia (y-tzp) after surface treatment with lasers and airborne-particle abrasion.first, 77 samples of presintered zirconia blocks measuring 10 × 10 × 2 mm were made, sintered and polished. then, they were randomly divided into 11 groups (n=7) and received surface treatments namely, er:yag laser irradiation with ...

BACKGROUND Spitz nevus is a benign melanocytic lesion sometimes mistakenly diagnosed clinically as melanoma. OBJECTIVE Our aim was to evaluate in vivo reflectance-mode confocal scanning laser microscopy (CSLM) aspects of globular Spitz nevi and to correlate them with those of surface microscopy and histopathology. METHODS A total of 6 Spitz nevi, with globular aspects on epiluminescence obs...

objective: confocal laser scanning microscopy (clsm) is relatively a new light microscopical imaging technique with a wide range of applications in biological sciences. primary value of clsm for the biologist is its ability to provide optical sections from three-dimensional specimen. the present study was designed to assess the thickness content of in vivo accumulated dental plaque using clsm a...

Confocal microscopy allows visualization of biopolymer networks at the nano scale. Analyzing structure and assembly protein from images requires a segmentation process. This has proven to be challenging due multiple possible sources noise in as well exhibition out-of-focus planes. Here, we present deep learning-based procedure for confocal laser scanning networks. Utilizing an encoder-decoder n...

introduction: this study aimed to assess the scanning electron microscope (sem) analysis of tooth surface irradiated by erbium:yttrium–aluminum–garnet (er:yag) laser with various parameters. methods: number of 25 extracted human third molars free of caries were used in this study. the teeth were put into 5 groups for laser irradiation as follows: group 1 (power: 0.5 w, energy: 50 mj); group 2 (...

Staphylococcus aureus can adhere to most foreign materials and form biofilm on the surface of medical devices. Biofilm infections are difficult to resolve. The goal of this in vitro study was to explore the use of chitosan-coated nanoparticles to prevent biofilm formation. For this purpose, S. aureus was seeded in 96-well plates to incubate with chitosan-coated iron oxide nanoparticles in order...

The effect of low frequency sonophoresis (SN, 20 kHz) on the skin transport of sodium fluorescein (NaFI)-loaded liposomes was investigated. An in vitro skin penetration study in open and blocked hair follicles was performed, and confocal laser scanning microscopy and scanning electron microscopy were used to visualize the penetration pathways. The results showed that SN significantly increased ...

Confocal scanning microscopes are imaging systems that are mainly featured by their unique depth-discrimination capacity when imaging three-dimensional objects. Along the past few years, our research group has done several attempts to improve their axial resolution by means of the so-called point-spread-function (PSF) engineering method. That is, by designing diffractive elements that properly ...

We quantitatively analyzed, using laser scanning confocal microscopy, the three-dimensional structure of individual senile plaques in Alzheimer disease. We carried out the quantitative analysis using statistical methods to gain insights about the processes that govern Abeta peptide deposition. Our results show that plaques are complex porous structures with characteristic pore sizes. We interpr...