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In the field of dentistry, prospective clinical study reports affirm the need for approximate growth analysis of endodontic tooth post treatment. There is no difference in the frequency, appearance or extent of root resorption in the teeth. It is necessary to elucidate the role of endodontic treatment in the root resorption. Differences between the two samples (radiographs), which are taken with specified...
2-D radiographs, while commonly used for evaluating sub-surface hard structures of teeth, have low sensitivity for early caries lesions, particularly those on tooth occlusal surfaces. Radiographs are also frequently refused by patients over safety concerns. Translucency of teeth in the near-infrared (NIR) range offers a non-ionizing and safe approach to detect dental caries. We report the construction...
Subjective evaluation of the abnormalities in dental images faces a few challenges such as low contrast. The problem arises due to the fix regulation of small X-ray dosage. Thus there are applications of image enhancement on the dental images and it is an acceptable technique to improve image quality and better diagnosis. Low contrast images could hinder the subjective evaluation and contribute to...
Diagnosis of dental diseases is conventionally carried out with the help of radiographic films. As a result of noise and other environmental interferences, use of radiographic films introduces errors. This paper presents an algorithm to use digital periapical radiographic images to detect enamel caries and interproximal caries. This will help dental practitioners to identify caries lesion with ease...
The study aims to highlight the role of radiodensitometric method (based on video processing) in the analysis of endodontic therapy used in some severe cases of chronic apical periodontitis (CAP). Three patients (age 20–30) with severe chronic apical periodontitis were treated using non-surgical endodontic treatment. For each patient, conventional periapical radiographs were taken before and after...
Radiographs are essential to all phases of endodontic therapy. They inform the diagnosis and the various treatment phases and help evaluate the success or failure of treatment. Because root canal treatment relies on accurate radiographs, it is necessary to master radiographic techniques to achieve films of maximum diagnostic quality. Such mastery minimizes retaking of films and reduces the radiation...
The aim of this paper is to propose a method to enhance the acquisition resolution of dental radiographic images to facilitate the clinical examination and interpretation. The algorithm is based on the approximation properties of spline-type spaces with multiple generators. These spaces are obtained by applying a discrete group of translation operators to a finite set of smooth functions, forming...
Osteoporosis is a degenerative disease characterized by low bone density and micro architectural deterioration of bone tissue with a consequent increase in bone fragility and decreasing bone mechanical force on supporting body normal activity. One of common technique used for measurement bone mass, bone mineral density or other aspect related bone structure is Dual Energy X-ray Absorptiometry (DXA)...
Osteoporosis is the systemic bone disease that is characterized by a generalized reduction of bone mass. It is main cause of fractures in elderly women. The panoramic radiographs are most widely used in the field of dentistry with a low radiation dose and are relatively inexpensive. So it is very useful for early detection of osteoporosis. Orthopantogram shows the entire mandible. The mineral content...
Panoramic radiographs synthesized from dental CT images manifest high quality than conventional dental panoramic radiograph and have been used in clinical treatment, but some manual operations are needed in current synthesizing algorithms. This paper presents a new algorithm to synthesize panoramic radiographs from dental CT images automatically. Firstly, projection image of the horizontal CT image...
The purpose of this study is to develop an automated carotid artery calcification (CAC) detection scheme on dental panoramic radiographs (DPRs). The CAC is one of the indices for predicting the risk of arteriosclerosis. First, regions of interest (ROIs) that include CACs were determined on the basis of inflection points of the mandibular contour. Initial CAC candidates were detected by using a grayscale...
This paper presents a method of dental work (DW) extraction and matching for bitewing radiographs. The method includes an algorithm that can correctly extract DW's from radiograph images and two matching metrics (dFD of frequency domain and dXOR of spatial domain) that can effectively match a postmortem DW to the genuine antemortem DW in the database. The experimental results show that our method...
Radiographic interpretation is crucial for the excellence of quality patient care. Image enhancements can contribute to better image that allow the clinician to derive the optimum amount of information from the radiographic data. However, the degree of enhancement applied to the original image can produce distortions that will lead to misinterpretation. This research presents the effect of Intra-oral...
Supporting systems for diagnosis and/or treatment planning in medical/dental area have been one of the applications of information technologies highly demanded in society. In orthodontics, it is very helpful in making treatment plans for orthodontists to know when second molars of each patient erupt. In this study, a system for prediction of the remaining period of pre-emergent eruption of lower second...
In tooth implantation surgery, dentist or surgeon needs to derive quantitative information about the place each implant should be go, the length and width of each implant should be, as well as the angle each implant should be inserted, based on the 3D CT image of jaw of a patient. In existing techniques, the information is measured from such slices that are generated from virtually cutting teeth-ridge...
We describe improvements to a method of detecting patients at risk of osteoporosis from automatic measurement of the inferior mandibular cortex on panoramic dental tomograms. Previous work had used an Active Shape Model (ASM) to locate the mandibular edges. However, the edge-based ASM has little lateral positioning information and in osteoporotic cases the superior border is often poorly defined....
The image quality obtained by a radiographic equipment is very useful to characterize the physical properties of the image radiographic chain, in a quality control of the radiographic equipment. In the radiographic technique it is necessary that the evaluation of the image can guarantee the constancy of its quality to carry out a suitable diagnosis. In this work we have designed some radiographic...
In this paper a computer vision system is proposed for automatic examination of implant placements based on the maxillary radiograph images. To find rotated and scale changed implants the system does template matching in the extended log-polar space. Matching is proposed to be performed in the anisotropic scale-space, starting from the coarse level. The precise location of an implant is then refined...
This paper proposes improvement for the detection method for carotid artery calcification in dental panoramic radiographs. The existence of the carotid artery calcification as an index for arteriosclerosis attracts a great deal of attention. The detection method for carotid artery calcification has been proposed. However the detection rate is about 50% for real data and its improvement should be required...
Dental panoramic radiography, which plays an important part in the diagnosis of oral diseases especially the plastic, has been widely used in hospitals as a branch of radiography. The dental panoramic X-ray images show a two-dimensional view of whole teeth from left second molar to right second molar only, but they do not contain the 3D information of patients' oral and maxillofacial anatomical structure...
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