نتایج جستجو برای: intraoral digital radiography

تعداد نتایج: 328480  

Journal: :journal of dentistry, tehran university of medical sciences 0
mehrdad abdinian dental implants research center, department of radiology, school of dentistry, esfahan university of medical sciences, esfahan, iran sayedmohammad razavi torabinejad dental research center and department of oral and maxillofacial pathology, school of dentistry, esfahan university of med- ical sciences, esfahan, iran. reyhaneh faghihian postgraduate student of pediatric dentistry, department of pediatric dentistry, faculty of dentistry, esfahan university of medical sciences, esfahan, iran amirabbas samety dentist, esfahan , iran elham faghihian postgraduate student of oral medicine, department of oral medicine, faculty of dentistry, esfahan university of medical sciences, esfa- han, iran

o bjectives : dental caries are common and have a high incidence among populations. radiographs are essential for detecting proximal caries. the best technique should be recognized for accurate detection of caries. the aim of this study was to compare the accuracy of detection of proximal caries using intra oral bitewing, extra oral bitewing, improved interproximal panoramic, improved orthogona...

Journal: :Radiologic technology 2012
Quentin T Moore Steven Don Marilyn J Goske Keith J Strauss Mervyn Cohen Tracy Herrmann Robert Macdougall Lauren Noble Greg Morrison Susan D John Lois Lehman

Digital radiography has become the norm in U.S. hospitals. The ability to view images, postprocess, and transmit the images systemwide immediately are distinct advantages. Yet, these technical advances create challenges for the radiology community, including the need to re-educate the workforce and prevent unnecessary radiation exposure. This education process is even more important for those w...

2008
Solmaz Valizadeh Sara Ehsani Farzad Esmaeili Mohammad Amin Tavakoli

BACKGROUND AND AIMS Radiography is used to diagnose the demineralization process and carious lesions; however, conventional radiography and direct digital images do not show these lesions when the amount of demineralization is less than 40%. Digital subtraction radiography has recently been used to improve the diagnostic quality of these le-sions. The purpose of this study was to compare the ca...

Journal: :avicenna journal of dental research 0
k. ghazikhanlou sani medical p hysics, department of r adiology, faculty of paramedical, hamadan university of medical sci ences,سازمان اصلی تایید شده: دانشگاه علوم پزشکی همدان (hamadan university of medical sciences) a. eskandarlou assistant professor of dental and maxillofacial radiology, department of radiology, faculty of dentistry, hamadan university of medical sciences, iranسازمان اصلی تایید شده: دانشگاه علوم پزشکی همدان (hamadan university of medical sciences) e. tahmasebi dental student, hamadan university of medical sciences, iranسازمان اصلی تایید شده: دانشگاه علوم پزشکی همدان (hamadan university of medical sciences) p. akbari dental student, hamadan university of medical sciences, iranسازمان اصلی تایید شده: دانشگاه علوم پزشکی همدان (hamadan university of medical sciences)

statement of the problem nowadays in many of the dental radiography centers in iran, three types of intraoral films are being used. there is a controversy about the best film regarding to sensitivity properties. purpose in this study, we aimed to compare sensitivity characteristics and detail recording of intraoral films. material and methods in this experimental study, three types of intraoral...

2015
Ye-Kyu Rhee Yoon-Hyuk Huh Lee-Ra Cho Chan-Jin Park

PURPOSE The aim of this study is to evaluate the appropriate impression technique by analyzing the superimposition of 3D digital model for evaluating accuracy of conventional impression technique and digital impression. MATERIALS AND METHODS Twenty-four patients who had no periodontitis or temporomandibular joint disease were selected for analysis. As a reference model, digital impressions wi...

Journal: :Biomedical journal 2013
Abbas Shokri Hamed Mortazavi Fatemeh Salemi Adineh Javadian Hamidreza Bakhtiari Hooman Matlabi

BACKGROUND Diagnosis of external root resorption (ERR) cavities may be challenging, especially when no clinical signs are seen. Therefore, the aim of this study was to compare the efficacy of conventional intraoral film radiography, charge-coupled device (CCD) detector, photostimulable phosphor plate (PSP) detector, and cone beam computed tomography (CBCT) for the detection of ERR. METHODS Th...

Journal: :journal of dentistry, shiraz university of medical sciences 0
vahid rakhshan iranian tissue bank and research center, tehran university of medical sciences, dept. of dental anatomy and morphology, dental branch, islamic azad university, tehran, iran.

digital radiographs need additional metadata in order to be accurate when being converted to analog media. resolution is a major reason of failures in proper printing or digitizing the images. this letter shortly explains the overlooked pitfalls of digital radiography and photography in dental practice, and briefly instructs the reader how to avoid or rectify common problems associated with res...

Journal: :Journal of Medical Radiation Sciences 2020

2011
Julio Cezar de Melo Castilho Roberto Hiroshi Matsui Miriam Yumi Matsui Mônica Fernandes Gomes

Objective – Technological improvement is usually followed by comparisons between conventional and new. Those who work with radiographic assessment, such as cephalometric analysis for orthodontic diagnosis, have been living a new challenging and learning phase since the introduction of digital images. It is possible to obtain reproducible and clear images with digital radiography, but radiograph...

Journal: :iranian journal of radiation research 0
r. paydar medical physics and biomedical engineering department, school of medicine, tehran university of medical sciences, tehran, iran a. takavar medical physics and biomedical engineering department, school of medicine, tehran university of medical sciences, tehran, iran m.r. kardan nuclear sciences research school, radiation applications research school, tehran, iran a. babakhani national radiation protection department, iranian nuclear regulatory authority, teheran iran m.r. deevband national radiation protection department, iranian nuclear regulatory authority, teheran iran s. saber pulmonary ward, shariati hospital, school of medicine, tehran university of medical sciences, tehran, iran

background: the radiation doses resulting from diagnostic x-ray examinations are routinely measured in terms of entrance surface dose (esd) and effective dose (ed). in this study, for the purpose of radiation protection, the radiation doses received from digital chest x-ray examination were evaluated in terms of esd and ed. material and methods: the ed was calculated by using the mcnp monte car...

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