نتایج جستجو برای: beam computed tomography canal instrumentation

تعداد نتایج: 412530  

Journal: :dental research journal 0
asieh zamani naser bahar behdad mehr

background: cross- sectional tomograms have been used for optimal pre-operative planning of dental implant placement. the aim of the present study was to assess the accuracy of cone beam computed tomography (cbct) measurements of specifi c distances around the mandibular canal by comparing them to those obtained from multi-slice computed tomography (msct) images. materials and methods: ten hemi...

Background and purpose: In order to achieve a successful root canal treatment, knowledge on root canal morphology and anatomy is essential. This study investigated the prevalence and morphology of the C- shaped canal in the mandibular second molar. Materials and methods: In this cross sectional study, we used cone-beam computed tomography (CBCT) images of 260 patients obtained from a radiology...

Background and Aim: Maintaining the original central canal path during cleaning and shaping of the root canal system plays an important role in the success of endodontic treatment. This study sought to compare canal transportation and centering ability of WaveOne and SafeSider rotary files using cone-beam computed tomography (CBCT). Materials and Methods: This in-vitro, experimental study was ...

ژورنال: مجله دندانپزشکی 2016
خیاوی, حسام میکاییلی, رموزی, الهام, مصطفوی, مریم, نیکنامی, مهدی,

Background and Aims: Considering importance of recognizing the position of incisive canal before inserting intraosseous implants and bone harvesting from the symphysis and to preventing from adverse effects after these surgeries, using appropriate imaging method is essential and necessary. Due to the high accuracy measurement and high quality of CBCT and also low received dose to patien...

Journal: :journal of dentomaxillofacil radiology, pathology and surgery 0
abolfazl dadbin shahed school of dentistry, shahed university of medical sciences, tehran, iran abbas salehivaziri department of orthodontics, shahed school of dentistry, shahed university of medical sciences, tehran, iran maryam basirat department of oral medicine, rasht school of dentistry, guilan university of medical sciences, rasht, iran shahab shahriar department of oral & maxillofacial radiology, shahed school of dentistry, shahed university of medical sciences, tehran, iran imohsen nouri sari department of orthodontics, shahed school of dentistry, shahed university of medical sciences, tehran, iran

introduction: this study aims at examining the difference of pharyngeal airways in patients with different occlusion postures, hoping to im prove diagnostic methods and provide a stable treatment plan for orthodontic patients. materials and methods: the data were ga-thered through cbct radiographies of patients from a specialized center for radiology. in each occlusion group according to the pe...

Journal: :journal of dentomaxillofacil radiology, pathology and surgery 0
safa motevasseli department of maxillofacial surgery, guilan university of medical sciences, dental school, rasht, iran zahra dalili oro-maxillofacial developmental diseases research center, department of maxillofacial radiology, guilan university of medical sciences, dental school, rasht, iran pouya nejadshamsi department of endodontics, guilan university of medical sciences, dental school, rasht, iran

introduction: panoramic view as a routine dental radiograph has an important role in diagnosis of other facial abnormalities accompanied with dento- alveolar structures. in this case presentation, we discuss this subject and also the efficacy of cone-beam computed tomography in localization of foreign body in complex anatomy of nasal cavity.

Journal: :journal of dentistry, tehran university of medical sciences 0
daryoush goodarzi pour elham romoozi yadollah soleimani shayesteh

objectives : bone assessment is essential for diagnosis, treatment planning and prediction of prognosis of periodontal diseases. however, two-dimensional radiographic techniques have multiple limitations, mainly addressed by the introduction of three-dimensional imaging techniques such as cone beam computed tomography (cbct). this study aimed to assess the accuracy of cbct for detection of marg...

Journal: :journal of dentistry, tehran university of medical sciences 0
shirin sakhdari azad dental branch ahmad reza talaeipour azad dental branch maziar talaeipour azad dental branch maryam pazhutan sanaz heidarkhan tehrani azad dental branch mohammad javad kharazifard

objectives: this study sought to assess the diagnostic accuracy of cone beam computed tomography (cbct) with different voxel sizes and intraoral digital radiography with photostimulable phosphor (psp) plate for detection of periapical (pa) bone lesions. materials and methods: in this ex vivo diagnostic study, one-millimeter defects were created in the alveolar sockets of 15 bone blocks, each wi...

Journal: :iranian journal of radiology 0
preetam bhujagonda patil department of radiodiagnosis and imaging, s.d.m college of medical sciences and hospital,dliswwed-580009, karnataka state, india +91-8362447798, [email protected] muralidhar gururajrao kamalapur department of radiodiagnosis and imaging, s.d.m college of medical sciences and hospital,dliswwed-580009, karnataka state, india +91-8362447798, [email protected]; department of radiodiagnosis and imaging, s.d.m college of medical sciences and hospital,dliswwed-580009, karnataka state, india +91-8362447798, [email protected] jayaraj chandrashekhar sindhur department of medicine, s.d.m college of medical sciences and hospital dharwad, india shyamsundar krishnabhat joshi department of radiodiagnosis and imaging, s.d.m college of medical sciences and hospital,dliswwed-580009, karnataka state, india +91-8362447798, [email protected]

abstract deep seated cavernous angioma (ca) is a very rare entity, those occurring in the hypothalamus are still less common. we present a case of a 52-year-old man who presented with behavior and memory disturbance attacks. he had a ca of the hypothalamus as revealed by magnetic resonance imaging (mri). we will discuss the role and importance of imaging in such scenario and also the differenti...

Journal: :iranian journal of radiology 0
zahra dalili department of maxillofacial radiology, dental school, o}imatnivesky:ov1}}wm{u5wciences, iran +98-1313230775, [email protected]; department of maxillofacial radiology, dental school, o}imatnivesky:ov1}}wm{u5wciences, iran +98-1313230775, [email protected] gholamhossein adham department of maxillofacial surgery, dental school, guilan university of medical sciences, iran

neurofibroma is an autosomal dominant disorder which has major criteria such as hyperpigmentation (cafe-au lait spots), cutaneous and subcutaneous tumors and bone deformities. in this report, a case of multifocal intraosseous neurofibroma in a 16-year-old male with right facial asymmetry, multiple unerupted maxillary posterior teeth and a previous history of infratemporal and orbital neurofibro...

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