نتایج جستجو برای: cone beam computed tomography cbct
تعداد نتایج: 398840 فیلتر نتایج به سال:
statement of the problem: most of the soft tissue calcifications within the head and neck region might not be accompanied by clinical symptoms but may indicate some pathological conditions. purpose: the aim of this research was to determine the prevalence of soft tissue calcifications in cone beam computed tomography (cbct) images of mandibular region. materials and method: in this cross sectio...
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 (...
Conventional radiographs used for the management of endodontic problems yield limited information because of the two-dimensional nature of images produced, geometric distortion and anatomical noise. This newer review paper seeks to clarify three-dimensional imaging techniques that have been suggested as adjuncts to conventional radiographs. These include tuned aperture computed tomography, magn...
Introduction: Cone beam computer tomography (CBCT) suffers inferior image quality due to scatter and other problems. We are developing a novel tetrahedron beam computed tomography (TBCT) imaging system which consists of a linear scan x-ray source and a linear x-ray detector array. TBCT system avoids the inherent problems of CBCT, thereby can significantly improve the quality of online images in...
Recent advancements in Cone Beam Computed Tomography (CBCT) have identified the importance of providing outcomes related to the appropriate use of this innovative technology in dentistry. To assist in determining whether evidence exists, the authors conducted a PubMed search in September, 2012 using the key words “cone beam in Dentistry.” This search revealed 1038 articles with 65 reviews recen...
The introduction of cone beam computed tomography (CBCT) devices, changed the way oral and maxillofacial radiology is practiced. CBCT was embraced into the dental settings very rapidly due to its compact size, low cost, low ionizing radiation exposure when compared to medical computed tomography. Alike medical CT, 3 dimensional evaluation of the maxillofacial region with minimal distortion is o...
Imaging is a highly dependent technology in the clinical assessment of a patient. With respect to the dental field, imaging has travelled a long way from the conventional radiographs to modern techniques like the computed tomography (CT) and the cone-beam computed tomography (CBCT). This article describes the evolution made in the CT in the field of dental imaging and attempts to compare the CT...
Introduction: Diagnosis of lesions and bone defects is very important and there is a lack of substantial studies on the most appropriate method for bone defect measurement. Hence, the aim of this study is to evaluate the accuracy of multi-slice computed tomography (MSCT) and cone-beam computed tomography (CBCT) in the diagnosis of mandibular bone defects present in sheep. Material & Methods: T...
OBJECTIVES Cone beam computed tomography (CBCT) is an innovative dental of imaging system characterized by rapid volumetric imaging with patient exposure to a single dose of radiation. The present study was carried out to compare the linear measurements obtained with CBCT and digital caliper in 20 mandibles from human cadavers. STUDY DESIGN A total of 4800 linear measurements were measured be...
this report describes the non-surgical treatment of an invaginated maxillary lateral incisor with two fused roots. the mesial root had a c-shaped canal, while the distal one had a type iii dens invagination. cone-beam computed tomography (cbct) was used to help with the diagnosis and treatment decision making. clinical and radiographic follow-up revealed satisfactory periapical repair and absen...
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