نتایج جستجو برای: megavoltage cone beam computed tomography

تعداد نتایج: 397607  

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...

ژورنال: :مجله دانشکده دندانپزشکی اصفهان 0
مژده مهدی زاده آرام محمدی مرجان بابادی mojdeh mehdizadeh aram mohammadi marjan babadi

مقدمه: آگاهی از موقعیت دقیق کف سینوس ماگزیلا در تعیین مکان ایمن جهت اقدام جراحی و گذاشتن ایمپلنت عاملی بسیار مهم می باشد. هدف از این مطالعه مقایسه فاصله لبه کرست تا کف سینوس ماگزیلا در سه نمای سه بعدی، کراس سکشنال و پانوراما از تصاویر cone beam computed tomography (cbct) بود. مواد و روش ها: در این مطالعه توصیفی- تحلیلی تعداد 94 تصویر cbct تهیه شده با دستگاه galileos با روش نمونه گیری آسان انتخا...

Journal: :iranian endodontic journal 0
mohsen bahmani alireza adl samane javanmardi sina naghizade

a 20-year-old man presented with the history of pain and swelling in the anterior maxillary segment. the periapical radiography was indicative of a dental anomaly in right maxillary lateral incisor. due to the insufficient information from conventional radiography, cone-beam computed tomography (cbct) was ordered. cbct showed apical root resorption, large apical lucency and two separate canals ...

Journal: :iranian endodontic journal 0
fatemeh ezzodini ardakani seyyed hossein razavi mahdi tabrizizadeh

i ntroduction: vertical root fracture (vrf) is the longitudinal fracture of the root in endodontically treated teeth. considering the limitations of two-dimensional radiographic images in detection of vrf and introduction of cone-beam computed tomography (cbct), this study was designed to find the sensitivity, specificity and accuracy of cbct and periapical (pa) radiography in detection of vrfs...

پایان نامه :وزارت بهداشت، درمان و آموزش پزشکی - دانشگاه علوم پزشکی و خدمات بهداشتی درمانی استان قزوین - دانشکده دندانپزشکی 1389

چکیده ندارد.

Journal: :journal of dentomaxillofacil radiology, pathology and surgery 0
shoaleh shahidi department biomaterial research center, oral and maxillofacial radiology, school of dentistry, shiraz university of medical sciences, shiraz, iran. barbod zamiri department of oral and maxillofacial surgery, school of dentistry, shiraz university of medical sciences, shiraz, iran. roghayeh panahi department of oral and maxillofacial radiology, school of dentistry, shiraz university of medical sciences, shiraz, iran. farin kiany oral and dental disease research center, school of dentistry, shiraz university of medical sciences, shiraz, iran

introdouction: cone beam computed tomography (cbct) is a relatively new three-dimensional imaging technology, which has been widely used in dental and maxillofacial imaging. materials and methods: cbct scans of 506 maxillary sinuses of 253 individuals (39.9% male and 60.1% female) were evaluated retrospectively for assessing the relationship between sinus mucosal thickening (mt) and dental and ...

Journal: :iranian journal of radiology 0
cihan yildirim department of endodontics, faculty of dentistry, gaziantep university, gaziantep, turkey ali murat aktan department of dentomaxillofacial radiology, faculty of dentistry, gaziantep university, gaziantep, turkey; department of dentomaxillofacial radiology, faculty of dentistry, gaziantep university, gaziantep, turkey. tel: +90-5327074499, fax: +90-3423610346 emrah karataslioglu department of endodontics, faculty of dentistry, gaziantep university, gaziantep, turkey fatih aksoy department of endodontics, faculty of dentistry, gaziantep university, gaziantep, turkey ozlem isman department of dentomaxillofacial radiology, faculty of dentistry, gaziantep university, gaziantep, turkey emre culha department of endodontics, faculty of dentistry, zirve university, gaziantep turkey

conclusion the cbct may be safe to use in determining root canal wl. because lower radiation dose, a pre-existing cbct can be useful to detect the root canal wl more precisely. results the cbct was the most accurate method to evaluate the root canal wl, with accuracy of 70%. accuracy for the apex locator and periapical radiograph were 40% and 30%, respectively. materials and methods totally, 30...

Journal: :iranian journal of radiology 0
ali murat aktan department of dentomaxillofacial radiology, faculty of dentistry, university of uşak, uşak, turkey; department of dentomaxillofacial radiology, faculty of dentistry, university of uşak, uşak, turkey. tel: +90-5327074499 cihan yildirim department of endodontics, faculty of dentistry, university of gaziantep, gaziantep, turkey emre culha department of endodontics, faculty of dentistry, university of zirve, gaziantep, turkey erhan demir department of endodontics, faculty of dentistry, university of marmara, istanbul, turkey mehmet ertugrul ciftci department of dentomaxillofacial radiology, faculty of dentistry, university of akdeniz, antalya, turkey

conclusion the determination of the presence of mb2 in the maxillary first molars may be carried out using cbct scans. if the ∠mdp was 91 degrees or greater, there was considered to be a higher probability that mb2 canals would be found in the endodontic cavity. due to the positive correlation between the ∠mdp and the ∠mdmb2, the localization of mb2 canals may be easily performed in relation to...

Journal: :مجله تحقیق در علوم دندانپزشکی و فک و دهان 0
dehghani m montazer lotf elahi h moeini m bardal r

abstract background and aim: cone beam computed tomography (cbct) produces high-quality data in periodontal diagnosis and treatment planning. the aim of this study was to compare the accuracy of cbct with intraoral digital and conventional radiography in the measurement of periodontal bone defects.  methods and materials: in this diagnostic research, two hundred and eighteen artificial osseous ...

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