introduction: radiography is one of the most important diagnostic methods for evaluation of dental caries. on the other hand, the least amount of radiation along with high quality is a main gold standard. the purpose of this study was to compare the diagnostic accuracy of primax, insight radiographic films, and direct digital images (schick cmos-aps), in detection of interproximal natural carie...

Purpose: The aim of this research was to compare different methods of geometric alignment produced by two programs developed to be utilized for digital subtraction radiography (DSR). Material and Methods: Material consists of 50 pairs of intra-oral radiographs taken in 50 patients during normal oral clinical treatment. Two programs invented by the authors of this article: ToothVis 1.4 (TV) and ...

Increasingly, veterinarians are using medical imaging to diagnose their patients. There is a corresponding tendency towards replacing conventional film-screen systems with digital medical imaging systems, such as computed radiography (CR) and direct radiography (DR). With these systems, many veterinarians around the world are enjoying considerable benefits, including time savings and optimal im...

Dental Radiographs have a valuable aid in the diagnosis of periodontal diseases and the evaluation of treatment effects. Computer-based image acquisition and processing techniques will now further increase the importance of radiography in periodontal diagnosis. Digital Subtraction Radiography (DSR) requires a pair of images with identical gray-level distribution and projection geometry is neede...

The purpose of this study was to compare the efficiency of conventional and digital panoramic images for localization of mental and mandibular foramens. Six dry edentulous human mandibles were used in the study. Conventional and digital panoramic images were obtained and the vertical and horizontal measurements were performed for localization of mental and mandibular foramens on the images. The...

introduction: the aim of this study was to compare digital and conventional radiography in determining the working length of dilacerated canals.methods: thirty nine human extracted single-rooted teeth with root curvature more than 35 degrees were included in this study. after access preparation, a file was inserted into the canal and advanced until the file tip was visualized at the foramen. wi...

  Objective: Diagnosis of vertical root fractures (VRFs) is critical in endodontics which most of the times occurs in endodontically treated teeth with root canal fillings such as gutta percha. Despite Cone Beam Computed Tomography (CBCT) has significantly enhanced image quality compared to digital radiography (DR) which aid the diagnosis, artifacts has remained as a problem in VRF detection . ...

This paper addresses the problem of estimating the model parameters of a piecewise multi-linear (PML) approximation to a probability density function (PDF). In an earlier paper, we already introduced the PML model and discussed its use for the purpose of designing Bayesian pattern classifiers. The estimation of the unknown model parameters was based on a least squares minimisation of the differ...

For many years, radiographs have been a valuable aid in the diagnosis of periodontal disease and the evaluation of treatment effects. Computer-based image acquisition and processing techniques will now further increase the importance of radiography in periodontal diagnosis. Temporal changes of lesions can be made easily visible by means of subtraction radiography based on digital images. This p...