Automating the process of analysis of Panoramic X-Ray images is important to help dentist procedures and diagnosis. Tooth segmentation from the radiographic images and feature extraction are essential steps. The authors propose a segmentation approach based on mathematical morphology, quadtree decomposition for mask generation, thresholding, and snake models. The feature extraction stage is ste...

Recently, wavelet transform has proven to be very effective in medical image compression. So, the choice of wavelet filters is a vital factor that could determine the compression performance. This paper considered the effect of applying different types of wavelet filters belonging to orthogonal and biorthogonal wavelet families with different orders on the panoramic dental x-ray images. In addi...

background: one of the most frequent concerns encountered in dental implant treatments is inadequate pre‑operative planning. panoramic radiographs are readily accessible and cost efficient. the aim of this study is to assess the accuracy of vertical measurements in mandibular molar andpremolar region on panoramic radiography. materials and methods : panoramic radiographs were made of a partiall...

Given panoramic video taken along a self-intersecting path, we present a method for detecting the intersection points. This allows “virtual tours” to be synthesized by splicing the panoramic video at the intersection points. Spatial intersections are detected by finding the bestmatching panoramic images from a number of nearby candidates. Each panoramic image is segmented into horizontal strips...

In this paper, we propose an image rectification method to generate panoramic views from stereoscopic images. Due to different intrinsic and extrinsic characteristics of stereoscopic cameras, there are some mismatches in the vertical direction of the stereo images and they become major obstacles to make a panoramic image. Therefore, we need to reduce mismatches to generate more natural panorami...

The panorama-based annotation method described in this paper uses a panoramic image as the source of information about the positions of the annotations. It nds image alignment parameters between an input frame and the panoramic image and then maps the positions of annotations from the panoramic image to the input frame and displays the input frame overlaid with those annotations. Camera movemen...

Taurodontism is a tooth anomaly characterized by an enlarged pulp chamber and an apical displacement of the pulpal floor. It ́s more prevalent in molar teeth, with few cases reported in premolars. Objective: To describe bilateral taurodontism in lower premolars associated with supernumerary teeth in a young patient. Case report: 10-year old female patient evaluated in a routine appointment. Clin...

Head and neck soft tissues calcifications can result from physiological or pathological mineralization. Some of these calcifications may be found on panoramic radiography because of their proximity to the focal trough and their superimposition over hard and soft tissue structures. Such radiographic images are common and create a diagnostic challenge. Differentiation of these entities can be don...

The purpose of the present study was to evaluate the incidence of dental anomalies in Brazilian patients with Down syndrome. A sample with 49 panoramic x-rays of syndromic patients aged 3 to 33 years (22 male and 27 female) was used. The characteristics of dental anomalies were observed in the panoramic radiographs in both the primary and permanent dentition, according to the ICD (International...