نتایج جستجو برای: Cone-beam computed tomography, Dimensional measurement accuracy, Dental

تعداد نتایج: 1588311  

Journal: :journal of dental school, shahid beheshti university of medical sciences 0
mahkameh moshfeghi dept. of oral & maxillofacial radiology, dental school, shahid beheshti university of medical sciences, tehran, iran. mohammad amintavakoli dept. of oral & maxillofacial radiology, dental school, shahid beheshti university of medical sciences, tehran, iran dara ghaznavi private practice, te . hran aisan ghaznavi dept. of oral and maxillofacial radiology, school of dentistry, urmia university of medical sciences, urmia, iran

objective: cone beam computed tomography (cbct) is applied for the imaging of the maxillofacial and dental structures, particularly for surgical treatments and dental implants. the aim of this study was to assess the effect of slice thickness on the accuracy of cbct linear measurements. methods: in this diagnostic accuracy study, forty-two titanium pins with the same dimensions were inserted in...

Journal: :journal of dentistry, tehran university of medical sciences 0
amir reza rokn rokn kazem hashemi solmaz akbari mohammad javad kharazifard hamidreza barikani mehrdad panjnoosh

objectives: this study sought to evaluate the accuracy and errors of linear measurements of mesiodistal dimensions of kennedy class iii edentulous space using cone beam computed tomography (cbct) in comparison with clinical measurements. materials and methods: nineteen kennedy class iii dental arches were evaluated. an impression was made of each dental arch and poured with dental stone. the di...

Journal: :journal of dentistry, tehran university of medical sciences 0
roghieh bardal bardal hassan jahanihashemi maryam mostafavi esmaeil kalhor maryam tofangchiha mahdieh dehghani

objectives: the optimal goal of radiography is to provide high-quality diagnostic images with the least patient radiation dose. the aim of this study was to evaluate the accuracy of cone-beam computed tomography (cbct) and intraoral photostimulable phosphor plate (psp) digital and film-based conventional radiography for detection of artificial cancellous bone defects. materials and methods: fiv...

J Porsamimi M Mobini M Tofanghchiha S Kafilzadeh

Background & Aims: The aim of this study was to evaluate the accuracy of Cone-beam Computerized Tomography (CBCT) linear measurements in dry mandibles by comparing them with direct measurements. Methods: Two human dry mandibles were used in this study. Thirteen sites were selected on each mandible. Specimens were scanned by CBCT and linear measurements were made using Planmeca Romexis 2.3.0.R s...

Journal: :iranian journal of radiology 0
sima nikneshan department of radiology, school of dentistry, shahid beheshti university of medical sciences, tehran, iran solmaz valizadeh department of radiology, school of dentistry, shahid beheshti university of medical sciences, tehran, iran anahita javanmard dentist, 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

conclusion considering the similar diagnostic efficacy of all voxel sizes, 300 µm voxel size can be used with adequate efficacy for detection of external root resorption defects with minimal patient radiation dose and the shortest scanning time. background selecting a voxel size that yields minimal radiation dose with no significant compromise of the diagnostic accuracy of cone beam computed to...

Journal: :avicenna journal of dental research 0
mahkameh moshfeghi department of oral and maxillofacial radiology, dental faculty, shahid beheshti university of medical sciences, tehran, ir iranسازمان اصلی تایید شده: دانشگاه علوم پزشکی شهید بهشتی (shahid beheshti university of medical sciences) shadi hamidiaval department of oral and maxillofacial radiology, dental faculty, lorestan university of medical sciences, khorramabad, ir iran; department of oral and maxillofacial radiology, dental faculty, lorestan university of medical sciences, khorramabad, ir iran. tel: +98-2188077784, fax: +98-2122371485سازمان اصلی تایید شده: دانشگاه علوم پزشکی لرستان (lorestan university of medical sciences) mohsen pakghalb faculty of technical and engineering, science and research branch, islamic azad university, tehran, ir iranسازمان اصلی تایید شده: دانشگاه آزاد اسلامی علوم و تحقیقات (islamic azad university science and research branch) alireza akbarzadeh baghban department of basic sciences, school of rehabilitation, shahid beheshti university of medical sciences, tehran, ir iranسازمان اصلی تایید شده: دانشگاه علوم پزشکی شهید بهشتی (shahid beheshti university of medical sciences)

conclusions the type of materials can influence the obtained gsv. different materials cause various amounts of artifacts due to differences in density and atomic number. results according to the mean gsv of the five different materials, the majority of artifacts produced were as follows: tempbond > zoe > mta > gi (chemfil dentsply) > gi (gc, fuji ιx). materials and methods samples of five cemen...

Journal: :iranian endodontic journal 0
amir hosein kiarudi mohammad jafar eghbal yaser safi mohammad mehdi aghdasi mahta fazlyab

by producing undistorted three-dimensional images of the area under examination, cone-beam computed tomography (cbct) systems have met many of the limitations of conventional radiography. these systems produce images with small field of view at low radiation doses with adequate spatial resolution that are suitable for many applications in endodontics from diagnosis to treatment and follow-up. t...

Journal: :journal of dental research, dental clinics, dental prospects 0
saurabh kumar gupta government college of dentistry, indore, m.p., india payal saxena government college of dentistry, indore, m.p., india shaleen khetarpal government college of dentistry, indore, m.p., india mishthu solanki modern dental college and research centre, indore, india

we report a rare case of a two-rooted maxillary central incisor, stressing the importance of three-dimensional imaging in treatment planning and conservative approach of management. endodontic treatment of this central incisor was carried out with a successful outcome.

Journal: :iranian endodontic journal 0
daniela cristina miyagaki unicamp jefferson marion caio cézar randi ferraz

a definitive diagnosis of vertical root fracture (vrf) is often a challenging task for clinicians. this is because two dimensional periapical radiographs are usually unable to detect the fracture line due to the direction of the x-ray beam. this report presents a set of 3 cases of endodontically treated teeth that were diagnosed with vrfs based on findings from clinical, radiographic, and cone-...

Journal: :avicenna journal of dental research 0
janet moradi haghgoo department of periodontics, school of dentistry, hamadan university of medical sciences, hamadan, ir iranسازمان اصلی تایید شده: دانشگاه علوم پزشکی همدان (hamadan university of medical sciences) abbas shokri department of radiology, school of dentistry, hamadan university of medical sciences, hamadan, ir iranسازمان اصلی تایید شده: دانشگاه علوم پزشکی همدان (hamadan university of medical sciences) amin khodadoustan department of periodontics, school of dentistry, hamadan university of medical sciences, hamadan, ir iranسازمان اصلی تایید شده: دانشگاه علوم پزشکی همدان (hamadan university of medical sciences) masoumeh khoshhal department of periodontics, school of dentistry, hamadan university of medical sciences, hamadan, ir iranسازمان اصلی تایید شده: دانشگاه علوم پزشکی همدان (hamadan university of medical sciences) nazli rabienejad department of periodontics, school of dentistry, hamadan university of medical sciences, hamadan, ir iran; department of periodontics, school of dentistry, hamadan university of medical sciences, hamadan, ir iran. tel: +98-8138381085, fax: +98-8138381085سازمان اصلی تایید شده: دانشگاه علوم پزشکی همدان (hamadan university of medical sciences) maryam farhadian department of epidemiology and biostatistics, school of public health, hamadan university of medical sciences, hamadan, ir iranسازمان اصلی تایید شده: دانشگاه علوم پزشکی همدان (hamadan university of medical sciences)

background radiography is as a part of periodontal examination. early detection of periodontal disease is important in the prevention of tooth loss and patient’s general health. objectives the objective of this study was to compare diagnostic accuracy of cone-beam computed tomography (cbct) with digital direct intraoral radiography, in assessment of periodontal osseous lesions. materials and me...

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