نتایج جستجو برای: cone beam

تعداد نتایج: 145331  

Journal: :avicenna journal of dental research 0
masoumeh khoshhal department of periodontics, 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, 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, hamadan university of medical sciences, hamadan, ir iranسازمان اصلی تایید شده: دانشگاه علوم پزشکی همدان (hamadan university of medical sciences) ali heidari department of oral and maxillofacial surgery, hamadan university of medical sciences, hamadan, ir iranسازمان اصلی تایید شده: دانشگاه علوم پزشکی همدان (hamadan university of medical sciences) fariborz vafaee dental research center, department of prosthodontics, hamadan university of medical sciences, hamadan, ir iran; dental research center, department of prosthodontics, hamadan university of medical sciences, hamadan, ir iran. tel/fax: +98-8138241961سازمان اصلی تایید شده: دانشگاه علوم پزشکی همدان (hamadan university of medical sciences)

discussion in this patient we preferred following up. afterwards, total surgical lesion resection can be performed. after a long-term follow-up, the area may receive an implant. case presentation a 40-year-old female patient presented an opaque lesion at the left mandibular side of face, in a cone-beam computerized tomography (cbct) view, during the implant placement evaluations. the patient ha...

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 ...

Journal: :iranian journal of radiology 0
saeedeh khajehahmadi dental research center, faculty of dentistry, mashhad university of medical sciences, mashhad, iran amin rahpeyma oral and maxillofacial diseases research center, faculty of dentistry, mashhad university of medical sciences, mashhad, iran; oral and maxillofacial diseases research center, faculty of dentistry, mashhad university of medical sciences, mashhad, iran. tel: +98-5118829501, +98-5118829500 seyed hosein hoseini zarch dental research center, faculty of dentistry, mashhad university of medical sciences, mashhad, iran

objectives: to compare the thickness of the lateral wall of the maxillary sinus in individuals with and without teeth to determine if extraction of the teeth can lead to a significant reduction in the thickness of the maxillary sinus lateral wall or not. patients and methods: in a retrospective study on fifty patients with an edentulous space, the thickness of the lateral wall of the maxillary ...

Journal: :journal of dentistry, tehran university of medical sciences 0
masoud varshowsaz sepideh goorang sara ehsani zeynab azizi sepideh rahimian

objectives: bone quality and quantity assessment is one of the most important steps in implant treatment planning. different methods such as computed tomography (ct) and recently suggested cone beam computed tomography (cbct) with lower radiation dose and less time and cost are used for bone density assessment. this in vitro study aimed to compare the tissue density values in hounsfield units (...

Journal: :journal of dentistry, tehran university of medical sciences 0
mehrdad panjnoush zonnar sadat rabiee yasaman kheirandish

objectives: this study aimed to evaluate the location and characteristics of mental foramen, anterior loop and mandibular incisive canal using cone beam computed tomography (cbct). materials and methods: this retrospective cross-sectional study evaluated 200 mandibular cbct scans for the location of mental foramen, anterior loop prevalence and mandibular incisive canal visibility, its mean leng...

Journal: :iranian endodontic journal 0
solmaz valiozadeh shahid beheshti university of medical sciences maryam khosravi shahid beheshti university of medical sciences zeynab azizi shahid beheshti university of medical sciences

introduction: vertical root fracture (vrf) is a common failure in endodontically treated teeth. due to vrf’s poor prognosis, a reliable and valid detection method is critical for treatment planning. conventional and digital radiographs are limited in vrf detection. recently, cone beam ct (cbct) system has been introduced. this study aimed to compare the diagnostic accuracy of these three imagin...

Journal: :journal of dental school, shahid beheshti university of medical sciences 0
s. valizadeh dept. of oral & maxillofacial radiology, school of dentistry, shahid beheshti university of medical sciences, tehran, iran. f. azimi dept. of oral & maxillofacial radiology, school of dentistry, gilan university of medical sciences, gilan, iran. h. babazadeh z. azizi dept. of oral & maxillofacial radiology, school of dentistry, shahid beheshti university of medical sciences, tehran, iran.

objective: diagnosis of vertical root fractures (vrfs) is critical in endodontics which most of the times occurs in endodontically treated teeth with root canal fillings such as gutta percha. despite cone beam computed tomography (cbct) has significantly enhanced image quality compared to digital radiography (dr) which aid the diagnosis, artifacts has remained as a problem in vrf detection . th...

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