ntroduction: the aim of this study was to compare the accuracy of cone-beam computed tomography (cbct), digital radiography and tooth sectioning in evaluating root canal morphology of mandibular incisors in an in vitro setting. methods and materials: a total of 76 samples were imaged using cbct, and digital radiography in straight and angled views. the samples were then sectioned at different d...

introduction: the aim of this study was to compare the diagnostic value of cone-beam computed tomography (cbct) and periapical (pa) radiography in detecting internal root resorption. methods and materials: eighty single rooted human teeth with visible pulps in pa radiography were split mesiodistally along the coronal plane. internal resorption like lesions were created in three areas (cervical,...

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...

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-...

conclusion we conclude that coronary calcium scoring provided useful information in the management of patients. in cacs less than 100, it has a npv of 87% in excluding significant stenosis in patients with the risk of cad but it does not have enough diagnostic accuracy for surely excluding coronary stenosis, so we should perform a combination of cacs and coronary ct angiography for patients. re...

communication between subarachnoid and per lymphatic spaces can be due to a deficiency of lamina crib rosa (stapes gusher). recognition of the condition may alter the course of treatment that can avoid perilymph gushing. a five-year-old boy presented with a history of congenital hearing loss and recurrent meningitis. the computed tomography (ct) of the temporal bone showed severe bilateral dysp...

objective: the knowledge of anatomic landmarks’ positions, including inferior alveolar nerve’s canal, is crucial for dentist, who has to master it. it is important to know the exact location and anatomic variety of this canal for different procedures of mandibular surgeries. the aim of the present study was to evaluate inferior mandibular canal’s anatomic position by cone-beam computed tomograp...

case a, a 27-year-old iranian male and case b, a 22-year-old afghani male, both presented to the emergency department of shohadaye hafte-tir hospital with multiple traumas due to car accidents. neither was aware of his unusual anatomy. one case unaware two just right heart. both patients were referred to the imaging department for ct scans and some radiographic studies. we discovered they were ...

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...

introduction: conventional methods for diagnosis of external root resorption (err) are based on clinical findings and x-ray observations which are not appropriate for early diagnosis. the present study assessed the effect of different sizes and field of views (fovs) in the diagnosis of simulated external root resorption by cone-beam computed tomography (cbct). methods and materials: in this dia...