Background: 3-dimensional (3D) imaging, such as cone beam computed tomography (CBCT), has recently become more widely utilized. While one eventual goal of 3D imaging is to provide a means of replacing traditional dental casts, further research needs to be done in testing the accuracy of these scans when used to produce tooth models. Objective: To objectively examine the accuracy of tooth models...

AIM: The aim of the study is to compare accuracy surgical guided implant produced by intraoral scanner, desktop and CBCT cast scan. SUBJECTS AND METHODS: A total 63 dental implants were placed using 14 guides. 15 subjects, eight males seven females (eight bilateral cases unliteral cases), with mean age 45 years (38–55 years) included in study. Patients randomly divided into three groups (n = 21...

Introduction: The aim of this study was to investigate the accuracy of Cone-beam computed tomography(CBCT) in detecting the horizontal root fractures (HRFs) in teeth with and without gutta-percha. Materials & Methods: This in vitro study was performed on 100 mandibular and maxillary single-rooted teeth. In 55 samples, the canals were prepared. Then, the horizontal fracture was induced randomly...

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...

X-ray grating interferometer can simultaneously retrieve attenuation, refraction, and scattering signals of the imaged sample, which shows its great potential in biomedical imaging. However, fast scan gratings high centrifugal forces during rotating grating-based cone-beam computed tomography (CBCT) system may lead to phase-stepping (PS) errors position fluctuations, cause reconstruction failur...

Intraoperative imaging offers a means to account for morphological changes occurring during the procedure and resolve geometric uncertainties via integration with a surgical navigation system. Such integration requires registration of the image and world reference frames, conventionally a time consuming, error-prone manual process. This work presents a method of automatic image-to-world registr...

Introduction Up to now, standardized and validated methods for monitoring linear scleroderma of the face are still lacking. Therefore, it is difficult to assess, in these patients, the disease progression both for therapeutic purposes and maxillofacial surgery procedures. The Cone Beam Computed Tomography (CBCT) is an imaging technique that has good sensitivity for both soft and the bony tissue...

A 28-year-old male patient with a history of cystic fibrosis (CF) was referred to the University of Connecticut School of Dental Medicine for an evaluation of a cystic lesion in the right maxilla using cone-beam computed tomography (CBCT). CF is an autosomal recessive disease characterized by an abnormal production of viscous mucus, affecting the mucociliary clearance. The CBCT scan revealed a ...

In this paper we describe a novel approach for introducing true material selectivity as a fourth dimension into cone-beam CT (CBCT) imaging by integrating means for energy-dispersive X-ray diffraction (EDXRD) measurements into the system. In order to minimize the acquisition time for the diffraction data, a compressed sensing reconstruction scheme requiring only a dilute set of projections was ...