Introduction. The aim of this study was to determine the accuracy linear measurements in dry human skulls ideal position and different deviated positions skull. Methods. 6 were included study. Opaque markers attached alveolar bone. Buccolingual mesiodistal distances heights measured 5 regions either jaws using a digital caliper. Radiographic ideal, rotation, tilt, flexion, extension skulls. physical radiographic compared estimate measurement accuracy. Results. mean difference between 0.05 ±...

Purpose . This study was carried out on an Iranian population aiming to investigate mental foramen position relative inferior border of mandible and skeletal midline its gender age differences CBCT projections. Materials Methods A number 180 images patients were analyzed in different planes (tangential, cross-sectional, axial). The distances from the superior anterior calculated. Results mean distance right side 13.26 mm (SD ± 2.34) left 13.37 2.19). There a statistically significant...

Vertical root fractures (VRFs) can significantly reduce dental prognosis. Cone-beam computed tomography (CBCT) offers better visualization of VRF than conventional radiography. However, gutta-percha creates artifacts in cone-beam CT images and reduces the diagnosis quality. The purpose this study was to evaluate accuracy CBCT detection presence absence canals.In cross-sectional study, 50 extracted mandibular premolars were selected. After preparing access cavity, canals instrumented using...

Background . Mental foramen is important in surgical operations of premolars because it transfers the mental nerves and vessels. This study evaluated variations by cone-beam computed tomography among a selected Iranian population. Materials Methods A total number 180 projections were analyzed terms shape, size, direction, horizontal vertical positions right left sides. Results The most common shape was oval, opening direction posterior-superior, position line with second premolar, apical to...

The anterior loop is an important structure in the interforaminal area of mandible. aim present study was to assess prevalence and length mental nerve using cone beam computed tomography (CBCT) scan compare differences between age, gender, side.A total 180 projections were analyzed different sectional planes. inferior alveolar determined. To measure tangential plane, two parallel lines from point foramen drawn. distance these measured by drawing a perpendicular line on them. data SPSS...

Abstract Background The aim of the present study was to investigate impact metal artifact reduction (MAR) algorithm cone‐beam computed tomography (CBCT) on diagnostic accuracy fenestration and dehiscence around dental implants. Methods Twenty‐three implants were placed adjacent 23 defects bovine bone blocks. blocks scanned with CBCT unit in two modes, without MAR algorithm. area under receiver operator characteristic (ROC) curves (Az value), specificity, sensitivity, positive predictive...

Greater palatine canal is used for maxillary nerve block. This procedure has some complications such as proptosis, blindness, and intravascular injection. study aimed to determine the mean greater length (CL) its typical anatomic routes, well provide a reliable facial index computing CL by using cone beam computed tomography (CBCT) data.A total of 138 CBCT scans (65 females 73 males) were evaluated. The path determined sex, age, side. distance from inferior border infraorbital foramen (IOF)...

Autogenous bone graft is the gold standard for repair of defects. However, osteoprogenitor stem cells are suggested as an alternative treatment. Aims: To quantitatively compare formation in autogenous and tissue-engineered using digital radiography densitometry software canine alveolar cleft model.This experimental study on animal models was conducted Isfahan University Medical Sciences.Mesenchymal (MSCs) were obtained from subcutaneous adipose tissue 4 dogs. Undifferentiated incubated with...

The silent sinus syndrome (SSS) involves painless facial asymmetry and enophthalmos, which is the result of chronic maxillary atelectasis. In most cases, it diagnosed clinically, however, using characteristic imaging features including outlet obstruction, opacification, volume loss caused by inward retraction walls. Obstruction ostium appears to play a critical role in development SSS. Treatment functional endoscopic surgery.

Objective: To evaluate the relationship between bone density measured by computed tomography (CT) and cone beam (CBCT) (Sirona’s Galileos scanner) with primary stability of dental implants. Material methods: 20 fresh bovine femoral heads were prepared removal soft tissue, sectioning bone, placement markers for location angulation Bone peri-implant areas was determined preoperatively CT CBCT scanning samples represented Hounsfield units (HUs) gray values (GVs), respectively. Then, 60 implants...

Odontogenic infections such as periapical lesions (PLs) can cause changes in the adjacent tissues. Infection of maxillary posterior teeth be easily transmitted to sinus and mucosa. Cone-beam computed tomography (CBCT) has high accuracy sensitivity for detection odontogenic is efficient assessment.This study aimed assess sinuses abnormalities mucosal thickening, polyps, periostitis, evaluate status considering presence PLs, their size distance from floor by evaluating CBCT images.This...

Sinus lift surgery allows sufficient volume of bone to be created in the posterior part maxilla. The aim this study was investigate changes maxillary sinus after a and rate increase ridge height at site graft.Eleven patients were chosen for from among those who referred radiology department implant placement region maxilla whose less than 4 mm on cone-beam computed tomography (CBCT) image. measured importing CBCT file DICOM format into Mimics software. After determining volume, underwent...

Abstract Ectopic tooth eruption in maxillary sinus is rare. usually causes sinonasal or ophthalmic symptoms, but asymptomatic cases are less reported. A 26-year-old man was referred to take a presurgical implant cone beam computed tomography of his anterior part maxilla. The projections showed an accidental finding ectopic third molar the posterior portion left sinus. patient did not report any history swelling pain. Although asymptomatic, impacted removed because tendency untreated teeth...

Central cementifying fibroma is a bony tumor, which believed to be derived from the cells of periodontal ligament. cemento-ossifying behaves like, benign bone neoplasm. This tumor consists highly cellular, fibrous tissue that contains varying amounts calcified resembling bone, cementum, or both. fibromas mandible are common; however, they rare in maxilla region. most frequent between 35 and 40 years ages. In this report we have described 37-year-old male with region mass had been appeared...

The percentage of failure endodontically treated maxillary molars is relatively high; one main reason that the second mesiobuccal canal (MB2) missing. Some techniques have been proposed for detection MB2. This study was aimed at assessing diagnostic accuracy and agreement dental microscope cone-beam computed tomography (CBCT) in comparison with microcomputed (micro-CT) MB2 first vitro.This vitro, experimental evaluated 71 permanent were stored 100% humidity room temperature. teeth mounted 9...

Background: Spheno-occipital synchondrosis is a growth center that involved in craniofacial development. Since osteogenesis of this occurs relatively later than other synchondroses, it has been taken into account for age estimation forensics. This study aimed to evaluate spheno-occipital using Cone-Beam Computed Tomography (CBCT) an Iranian population. Methods: In cross-sectional study, 148 CBCT images (76 women and 72 men) patients aged 7-25 years, with mean 19.92±6.3 were assessed by two...

Two-dimensional intraoral radiography is the most common tool for recognizing root fractures. Improving quality of images by means enhancement tools can increase recognition power them. The aim this study to evaluate effect digital image on vertical and horizontal fractures (HRFs) diagnostic accuracy.In in vitro study, 100 human extracted teeth, involving 50 mandibular premolars maxillary incisors, were investigated. In total, 25 premolar teeth vertically fractured other sound served as...