Objective: The primary objective of this investigation was to evaluate the detection root fracture using cone beam CT (CBCT) images and compare these findings with real samples extracted teeth. A second aim determine importance reconstructed in diagnosis fracture. Methods: Conventional periapical radiographs CBCT 10 cases, each a suspected fracture, were evaluated accordance pre-established scoring system by maxillofacial radiologist who unaware clinical symptoms patients. Then, an...

The optimal position of the condyle in glenoid fossa is a fundamental question dentistry. There no quantitative standard for mandibular our population. purpose this study to assess by cone beam computed tomography (CBCT) images patient with normal function temporomandibular joint (TMJ).In cross-sectional study, CBCT 40 class I skeletal patients (15 males and 25 females) without history TMJ disorders were selected. Next, anterior, superior posterior spaces (Ajs, Sjs, Pjs) measured on two true...

Abstract Objectives This study aimed to assess the efficacy of deep learning applications for detection nasal bone fracture on X-ray lateral view. Methods In this retrospective observational study, 2,968 views trauma patients were collected from a radiology center, and randomly divided into training, validation, test sets. Preprocessing included noise reduction by using Gaussian filter image resizing. Edge was performed Canny edge detector. Feature extraction conducted gray-level...

Implant placement plays a vital role in oral rehabilitation following loss of the incisors. Thus, having knowledge anatomical variations adjacent neurovascular structures especially nasopalatine canal (NPC) is essential. Due to lack basic information Iran about morphology this and probability its variety different populations, study was designed on an Iranian population.In descriptive study, we selected cone-beam computed tomography images 198 patients comprising 98 males 100 females two...

Preoperative radiographic evaluation of impacted third molars is essential to determine the proximity mandibular canal minimize risk nerve injury. Our study aim was evaluate relationship between and using cone beam computed tomography (CBCT) compare findings therein with panoramic signs.CBCT images were taken from 29 patients having 43 Class C whose radiographs showed a close molars. We evaluated their tomographs course canal, its root, any narrowing presence root grooving or hooks cortex. A...

Field of view and voxel resolution cone beam computed tomography (CBCT) might affect the diagnostic capability. This study was performed to compare between standard HiRes zoom modes in diagnosis external root resorption (ERR) using CBCT.Sixty three small cavities (0.25 mm depth 0.5 diameter) were simulated on buccal, lingual, proximal surfaces at different levels 16 roots teeth. After covering with nail varnish, inserted sockets model placed a water-containing lacuna. CBCT scans taken both...

Purpose: Analyzing different patterns of maxillary sinus septa in cone-beam computed tomography (CBCT) images and predicting membrane perforations. Materials Methods:In this cross-sectional study, CBCT 222 patients ranging from 20 to 81 years old were evaluated.One hundred fifty-two (93 females 59 males) who had axial views included study.Cross-sectional used determine classifications the risk perforation using a method modified Al-Faraje et al.Variables sex, age, dental status...

To assess the effects of object position in field view (FOV) and application a metal artifact reduction (MAR) algorithm on diagnostic accuracy cone-beam computed tomography (CBCT) for detection vertical root fractures (VRFs).Sixty human single-canal premolars received canal treatment. VRFs were induced 30 endodontically treated teeth. The teeth then divided into 4 groups, with 2 groups receiving posts remaining only having an empty post space. roots from different mounted phantom made cow...

Vertical root fracture (VRF) is defined as a partial or complete longitudinal lucent line on radiograph that extends through the long axis of tooth. 1 VRFs pri-marily extend from inner portion toward outer side in buccolingual buccopalatal direction and cervical to apical third.In this phase, local inflammation usually stimulates bone resorption finally induces loss.Therefore, majority cases, radiographic findings resemble periodontal disease. 1,2ombining usage signs clinical symptoms can be...

Neurofibroma is an autosomal dominant disorder which has major criteria such as hyperpigmentation (cafe-au lait spots), cutaneous and subcutaneous tumors bone deformities. In this report, a case of multifocal intraosseous neurofibroma in 16-year-old male with right facial asymmetry, multiple unerupted maxillary posterior teeth previous history infratemporal orbital presented. The majority reported cases occurred the portion mandible limited number maxilla. Cone beam CT (CBCT) was performed...

Contrast, sharpness, enhancement, and density can be changed in digital systems. The important question is to what extent the changes these variables affect accuracy of caries detection.Forty eight extracted human posterior teeth with healthy or proximal surfaces were imaged using a photostimulable phosphor (PSP) sensor. All original images processed six-step method: (1) applying "Sharpening 2" "Noise Reduction" processing options images; (2) "Magnification 1:3" option image obtained first...

Unilateral condylar hyperplasia can lead to marked and disfiguring changes in the face occlusion. A method of determining side-to-side differences activity is an important step managing this condition.To determine growth normal mandibular condyles devise index different individuals.Thirty eight patients, ranging from 13 34 years, who were undergoing skeletal scintigraphy for a variety conditions agreed participate study. No subjects had clinical or radiographic signs hyperplasia. After...

Purpose : The purpose of this study was to compare the conventional and digital radiography in estimation working length mandibular molars.Materials Methods Sixty molar teeth were selected divided into three groups basis canal curves (0-15� , 15-30� ¤30� ).After placement a 15 K-file, radiographs taken with film (Fspeed) sensor.Canal lengths measured these images by two observers.Statistical analysis performed repeated measures ANOVA paired sample t-test 95% confidence.Results There high...

The purpose of this study was to evaluate the efficacy cone-beam computed tomography CBCT in diagnosis RF presence an intracanal posts with and without applying "metal artifact reduction" (MAR) mode.This vitro included 60 single-canal endodontically treated premolars. Post spaces were created all roots. RFs simulated 30 teeth. Dentatus cemented 15 roots RFs. Teeth arranged randomly 6 artificial dental arches. Images taken using a Vatech machine MAR (MAR WMAR, respectively). A radiologist...

The purposes of this study were to determine the midpalatal suture (MPS) opening depth and assess its relation with zygomaticomaxillary (ZMS) by age using cone beam computed tomography (CBCT).In cross-sectional study, 167 CBCT scans patients aged 7-25 years (mean age: 16.04 ± 5.17 years) selected based on predefined criteria categorized into four groups. mean percentages MPS at anterior, middle, posterior regions in coronal closure status ZMS axial views determined a maxillofacial...

This study was performed to compare the metal artifacts from common orthodontic brackets in magnetic resonance imaging.A dry mandible with 12 intact premolars prepared, and scanned ten times various types of brackets: American, 3M, Dentaurum, Masel were used, together either stainless steel (SS) or nickel titanium (NiTi) wires. Subsequently, three different sequences coronal axial images obtained: spin-echo T1 -weighted images, fast T2 fluid-attenuated inversion recovery images. In each...

The effect of metallic objects on the fractal dimension (FD), bone area fraction (BAF) and gray scale values (GSVs) cone-beam CT (CBCT) images was assessed. Also, FD, BAF GSV were compared among CBCT, digital periapical panoramic radiographies.Digital radiographs acquired from six blocks bovine rib. Additionally, different arrangements titanium implants intracanal posts created in CBCT scans taken implant-root arrangements. three radiographical modalities by analysis variance. Pairwise...

Prevalence of Developmental and Acquired Dental Anomalies on Digital panoramic Radiography in Patients Attending the Faculty Rasht, Iran

The objective of this study was to evaluate the mesiobuccal (MB) root canal(s) anatomy maxillary first and second molar teeth in an Iranian population.Cone beam computed tomography images 280 (145 molars 135 molars) were analyzed determine number types MB canals. Chi-square test used examine relationship between canals sex Mann-Whitney analysis define buccopalatal dimension roots. level interobservers' agreement assessed with Kappa test.Nearly 44.8% 18.5% had additional canal (MB2). Types I...

In order to successfully perform root canal treatment, thorough knowledge of the anatomy is essential. Cone-beam computed tomography (CBCT) has ability improve our understanding system. The goal present study was compare accuracy CBCT in revealing number and form canals different maxillary mandibular teeth with clearing staining method.CBCT images were taken from 80 extracted human fixed agar arch models. configuration each tooth determined by two observers. Then cleared stained. Two...