نتایج جستجو برای: cone beam computed tomography cbct

تعداد نتایج: 398840  

2016
Melek Tassoker Sevgi Ozcan

Salivary gland stones can be detected with different diagnostic methods. Plain radiography, sialography, computed tomography (CT), cone-beam CT (CBCT), ultrasonography (US), magnetic resonance imaging (MRI), and nuclear scintigraphy / positron emission tomography (PET) all play roles in the diagnosis of salivary gland lesion. The aim of this report was to present clinical and radiological featu...

Journal: :American journal of orthodontics and dentofacial orthopedics : official publication of the American Association of Orthodontists, its constituent societies, and the American Board of Orthodontics 2009
Dan Grauer Lucia S H Cevidanes William R Proffit

The increasing use of cone-beam computed tomography (CBCT) requires changes in our diagnosis and treatment planning methods as well as additional training. The standard for digital computed tomography images is called digital imaging and communications in medicine (DICOM). In this article we discuss the following concepts: visualization of CBCT images in orthodontics, measurement in CBCT images...

Journal: :dental research journal 0
shoaleh shahidi nahal kazerooni zadeh farahnaz sharafeddin shahriar shahab ehsan bahrampour shahram hamedani

background: this study was aimed to compare the diagnostic accuracy and feasibility of cone beam computed tomography (cbct) with phosphor storage plate (psp) in detection of simulated occlusal secondary caries. materials and methods: in this in vitro descriptive-comparative study, a total of 80 slots of class i cavities were prepared on 80 extracted human premolars. then, 40 teeth were randomly...

Journal: :iranian journal of radiology 0
solmaz valizadeh department of radiology, school of dentistry, shahid beheshti university of medical sciences, tehran, iran; dental research center, research institute of dental sciences, shahid beheshti university of medical sciences, tehran, iran hamidreza pouraliakbar dental research center, research institute of dental sciences, shahid beheshti university of medical sciences, tehran, iran leila kiani rajaie cardiovascular medical and research center, iran university of medical sciences, tehran, iran yaser safi department of radiology, school of dentistry, shahid beheshti university of medical sciences, tehran, iran leila alibakhshi department of radiology, school of dentistry, shahid beheshti university of medical sciences, tehran, iran; department of radiology, school of dentistry, shahid beheshti university of medical sciences, tehran, iran. tel: +98-2122907040, fax: +98-2188804037

conclusions ultrasound is recommended as the first choice when fb is located within the superficial soft tissues with no bone around it. in case of penetration of fb into deeper tissues or beneath bone, ct or cbct are recommended. otherwise, considering lower dose, cbct is preferred over ct. we can use mri if the fb is not ferromagnetic. however, ct is the first choice in emergency situations b...

Journal: :iranian journal of otorhinolaryngology 0
amin rahpeyma oral and maxillofacial diseases research center, school of dentistry, mashhad university of medical sciences, mashhad, iran. saeedeh khajehahmadi dental research center, school of dentistry, mashhad university of medical sciences, mashhad, iran. parvin amini dental material research center ,school of dentistry, mashhad university of medical sciences, mashhad, iran.

introduction: knowledge of the presence of the alveolar antral artery in the lateral maxillary sinus wall is essential for surgeons who operate in this region. the purpose of this study was to investigate the correlation between alveolar antral artery diameter and lateral maxillary bony wall thickness in dentate patients.   materials and methods: thirty five cone-beam computed tomography (cbct)...

Journal: :iranian journal of radiology 0
ismail uzun department of endodontics, faculty of dentistry, ondokuz mayis university, samsun, turkey kaan gunduz department of dentomaxillofacial radiology, faculty of dentistry, ondokuz mayis university, samsun, turkey peruze celenk department of dentomaxillofacial radiology, faculty of dentistry, ondokuz mayis university, samsun, turkey hakan avsever department of dentomaxillofacial radiology, gulhane military medical academy (gata), ankara, turkey kaan orhan department of dentomaxillofacial radiology, faculty of dentistry, ankara university, ankara, turkey; department of dentomaxillofacial radiology, faculty of dentistry, near east university, mersin, turkey gozde canitezer department of dentomaxillofacial radiology, faculty of dentistry, ondokuz mayis university, samsun, turkey; department of dentomaxillofacial radiology, faculty of dentistry, ondokuz mayis university, samsun, turkey. tel: +90-3623121919, fax: +90-3624576032

conclusion no significant differences were found among observers or voxel sizes, with high az results reported for all groups. results no significant differences were found among observers or voxel sizes, with high average z (az) results being reported for all groups. both intra- and inter-observer agreement values were relatively better for 3d accuitomo 170 images than the images from newtom 3...

Journal: :journal of dentomaxillofacil radiology, pathology and surgery 0
faegheh gholinia department of orthodontics, guilan university of medical sciences, dental school, rasht, iran zahra dalili department of oral maxillofacial radiology, guilan university of medical sciences, dental school, rasht, iran azam nahvi department of pediatric dentistry, tehran university of medical sciences dental school, tehran, iran ali khalighi sigaroudi department of oral maxillofacial surgery, guilan university of medical sciences, dental school, rasht, iran

introduction: a study model is a precise three dimensional replica of patient’s dentition and plays an important role in treatment planning. many digital multi-media applications have become available to the clinician and his or her staff to facilitate standard procedures in practice and management. the aim of this study is to evaluate reliability and validity of dental measurement made on digi...

Journal: :journal of dentomaxillofacil radiology, pathology and surgery 0
najme anbiaee oral and maxillofacial radiologist, department of oral and maxillofacial radiology, maxillofacial diseases research center, school of dentistry, mashhad university of medical sciences, mashhad, iran. saeede ebrahimi department of oral and maxillofacial radiology, maxillofacial diseases research center, school of dentistry, mashhad university of medical sciences, mashhad, iran. hamed ebrahimnejad department of oral and maxillofacial radiology, maxillofacial diseases research center, school of dentistry, mashhad university of medical sciences, mashhad, iran. maryam mohammadzade rezaie department of oral and maxillofacial radiology, maxillofacial diseases research center, school of dentistry, mashhad university of medical sciences, mashhad, iran. zoha sahebnasagh department of oral and maxillofacial radiology, maxillofacial diseases research center, school of dentistry, mashhad university of medical sciences, mashhad, iran.

parotid stafne bone defect is a very rare and infrequent variant, which is located on the buccal or lingual surface of the mandibular ascending ramus. in this paper, a case of parotid stafne defect, which was incidentally discovered during dental radiographic examination, is reported. this bone defect was observed as a lucent oval-shaped defect on the lingual aspect of the right mandibular ramu...

Journal: :journal of dentomaxillofacil radiology, pathology and surgery 0
pegah bronoosh department of oral and maxillofacial radiology, dental school, shiraz university of medical science, shiraz, iran leila khojastepour department of oral and maxillofacial radiology, faculty of dentistry, shiraz university of medial science, shiraz, iran. shabnam charlie mohammad dental school, international branch, shiraz university of medical science, shiraz, iran

introdouction: the aim of this study was to compare information regarding pharyngeal airway sizes in adolescent subjects with different malocclusion classes obtained from lateral cephalograms and 3–dimensional (3d) cone-beam computed tomography (cbct) scans. materials and methods: in this prospective cross-sectional study, cbct scans and lateral cephalograms of 35 subjects, taken within one wee...

Journal: :iranian endodontic journal 0
saeed rahimi hadi mokhtari bahram ranjkesh masoomeh johari mohammad frough reyhani shahriar shahi

introduction: having knowledge about the anatomy of root canal system is essential for success of endodontic treatment. the present study used cone-beam computed tomography (cbct), to evaluate the prevalence of third root in mandibular first molars in a selected iranian population. methods and materials: a total of 386 cbct images from subjects referred to oral and maxillofacial radiology depar...

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