نتایج جستجو برای: panoramic
تعداد نتایج: 5155 فیلتر نتایج به سال:
introdouction: the aim of this study was to determine the associations between commonly found pathologic conditions and angulation of the lower third molar teeth. materials and methods: in this retrospective study, 370 panoramic radiographs consisting of 724 lower third molars were evaluated for any pathologies according to their angulation(mesioangular, distoangular, vertical, or horizontal). ...
introdouction:the styloid process(sp) has the potential for calcification and ossification. the aim of this study was to investigate the prevalence of different patterns of elongation and calcification of the sp. materials and methods: in this cross-sectional study, 400 digital panoramic radiographs taken for routine dental examination in the dental school of shiraz university were evaluated fo...
this study was aimed to investigate the use of panoramic radiography in patients with low bone mineral density (bmd) in order to diagnose and prevent osteoporotic fractures. panoramic radiographs of 60 patients (20 men and 40 women) aged from 40 to 70 years with cortical thicknesses of less than 3 mm in the mandibular angle were selected from patients referred to a dentomaxillofacial radiology...
Introduction: Infraorbital ethmoid air cells are such anatomical variations may result sinusitis. CT scan is commonly used for imaging infraorbital ethmoid cells but panoramic radiographs often show infraorbital ethmoid cells. This study aim to determaine the prevalence of infraorbital ethmoid cells on panoramic radiographs in cases older than 4 years referred to Dental School of Islamic Azad U...
Methods of determining a child's growth and development which are exact, reliable and also recordable objectively are important in confirming, treating and controlling the effect of treatment in both medicine and dentistry. A roentgenological determination of the skeletal age is generally used in estimating the physical age of a child. In this study, (1) the dental age, which is calculated from...
Panoramic radiograph is one of the routinely used investigations in dentistry. The value of panoramic radiograph is reduced when they are of poor diagnostic quality. Therefore, the aim of the study is to be aware of the common positional and technical errors so as to minimize such errors occurring in the department. Panoramic radiographs of all the patients, who were taking radiographs for thei...
Background and aim: Considering the widespread development of implants in dental treatment plans, linear measurements on panoramic radiography are of especial importance. In the present study we investigated the effect of head misalignment up to 15° around vertical and horizontal axes on the magnification rate of digital panoramic radiography in each part of upper and lower jaws. Materia...
One of the most common positioning errors in panoramic radiography is palatoglossal air space above the apices of the root of maxillary teeth. It causes a radiolucency obscuring the apices of maxillary teeth. In the case of this positioning error, the imaging should be repeated. This causes the patient be exposed to radiation again. To avoid the repetition of exposing harmful X-rays to the pati...
OBJECTIVE It is a well-known fact that osteoporosis affects the people with old age and remains unnoticeable until the patient presents with fracture. Various studies in the literature reveal that panoramic radiographs may prove to be beneficial in the detection of Osteoporosis in patients. Henceforth this present study was aimed to validate the use of Klemetti Index (KI) on panoramic radiograp...
PURPOSE This study aimed to provide comparative measurements of the effective dose from direct and indirect digital panoramic units according to phantoms and exposure parameters. MATERIALS AND METHODS Dose measurements were carried out using a head phantom representing an average man (175 cm tall, 73.5 kg male) and a limbless whole body phantom representing an average woman (155 cm tall, 50 k...
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