The success of any endodontic therapy depends on factors such as correct diagnosis and prognosis. Unawareness or failure to locate additional canals, such as the mesiopalatal canal in the upper first molar, may lead to unsuccessful treatment. Hence, it is valid to consider all the resources available for locating this anatomic structure, e.g. the Cone-Beam Computed Tomography (CBCT). The purpos...

Oral submucous fibrosis (OSMF) is a potentially malignant condition, chiefly associated with the practice of chewing arecanut. Though numerous treatment modalities have been tried but all are palliative and have no curative value. Hence, present preliminary clinical trial was undertaken to evaluate the efficacy of PRAK-20; a herbomineral compound and Garlic in the management of OSMF. METHODS: F...

Inspired by optical recordings from visual cortex which show maps of orientation selectivity, and the finding that very similar patterns of population activity occur when the neurons fire spontaneously [T. Kenet, D. Bibitchkov, M. Tsodyks, A. Grinvald, A. Arieli, Spontaneously emerging cortical representations of visual attributes, Nature 425 (2003) 954–956], we approach the question of how the...

We seek unbiased methods for estimating the target vergence required to maximize visual acuity based on wavefront aberration measurements. Experiments were designed to minimize the impact of confounding factors that have hampered previous research. Objective wavefront refractions and subjective acuity refractions were obtained for the same monochromatic wavelength. Accommodation and pupil fluct...

Recently, 3-T magnetic resonance imaging (MRI) has been introduced for bone imaging. Through higher signal-to-noise ratios, as compared to 1.5-T MRI, it promises to be a more powerful tool for the assessment of cortical and trabecular bone measures. The goal of our study was to compare MRI-derived cortical and trabecular bone measures to quantitative computed tomography (QCT)-derived bone miner...

The limitations of the current methods of quantifying the surgical movements of facial bones inspired this study. The aim of this study was the assessment of the accuracy and reproducibility of directly landmarking of 3D DICOM images (Digital Imaging and Communications in Medicine) to quantify the changes in the jaw bones following surgery. The study was carried out on plastic skull to simulate...

Image compression plays a vital role in digital image processing. The need for image compression becomes apparent when number of bits per image are computed resulting from typical sampling rates and. quantization methods. For example, the amount of storage required for given images is (i) a low resolution, TV quality, color video image which has 512 x 512 pixels/color,8 bits/pixel, and 3 colors...

Endocrine regulation of reproductive processes of the snail Biomphalaria alexandrina is poorly recognized. Thus, the aims of the study were: (1) to acquire histological images of the ovotestis; (2) to determine the hemolymph concentrations of testosterone (T) and gonadotropic hormones (luteinizing hormone: LH and follicle stimulating hormone: FSH), (3) to demonstrate androgen receptor (AR) immu...

As resinas de baixa viscosidade na técnica injetável ganharam espaço Odontologia por serem um material mais econômico e conservador quando comparadas com os laminados cerâmicos técnicas que dispõem maior tempo clínico. A envolve enceramento dentário confecção uma matriz silicone transparente, onde foi injetada a resina Beautiful Flow Plus (Shofu) F03 cor A2. silicona deve possuir translucidez p...

Computed tomography confirmed the recurrence of cholelithiasis in the common bile duct (CBD) and in the dilated right hepatic duct associated with atrophy of S6–7 hepatic segments (●" Fig.1). Multiple stones and pus were extracted from the CBD during endoscopic retrograde cholangiopancreatography, which revealed a tight stricture, which could not be bypassed using several guide wires and upstre...