Comparing Cone Beam Computed Tomography and Panoramic Radiography to Evaluate the Mandibular Incisive Canal Location and Prevalence PDF Download
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Author: Carlos Alberto Soares Pires
Publisher:
ISBN:
Category :
Languages : en
Pages : 62
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Author: Carlos Alberto Soares Pires
Publisher:
ISBN:
Category :
Languages : en
Pages : 62
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Author: Roberta A Wright (D.M.D.)
Publisher:
ISBN:
Category : Electronic dissertations
Languages : en
Pages :
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Statement of Problem: The anterior mandible has conventionally been deemed as a relatively â€safe zone†for dental implants due to perceived lack of innervation to the area as well as its relatively thick cortices and dense bone. However, with the evolution of cone beam computed tomography (CBCT), a number of anatomic challenges have been identified by clinicians that can lead to neuropathy and life-threatening hemorrhage if violated. The three critical anatomic structures in this area that pertain to implant placement are the sublingual artery (SLA), submental artery (SMA), and the mandibular incisive canal. Currently, there is a lack of knowledge regarding average measurements of these anatomic structures in relation to a specific non-variable landmark. Furthermore, it is not known if there are any significant variations of these anatomic structures in dentate and edentulous patients. While these structures may be identifiable on a CBCT scan, mandatory CBCTs are not required by practitioners in order to perform implant surgery in the anterior mandible. Purpose: To determine if standardized average values can be obtained for the sublingual artery (SLA), submental artery (SMA), and mandibular incisive canal (MIC), and if differences exist between dentate and edentulous patients. Materials and Methods: CBCTs of 125 edentulous and 100 dentate subjects were evaluated at the anterior mandible for incidence of visualization of the SLA, SMA, and MIC. Measurements of these three structures were also made from the inferior cortical border of the mandible to the superior border of each structure in order to gain average anatomical measurements. The cross-sectional shapes of anterior mandibles were also categorized and prevalence of each shape in this sample was calculated. Results: The incidence of visualization of the SLA on CBCT was found to be 100% for edentulous subjects and 98% for dentate subjects. The SLA was located approximately 15mm above the inferior border of the mandible. The incidence of visualization of the SMA on CBCT was 94% for edentulous subjects and 88% for dentate subjects. The SMA was located approximately 5mm above the inferior border of the mandible. The incidence of visualization of the MIC on CBCT was 61% for edentulous subjects and 59% for dentate subjects. The MIC was found to be approximately 1.5mm in diameter at the lateral incisor and canine regions. The MIC was located approximately 11mm above the inferior border of the mandible in edentulous patients, and approximately 14mm above the inferior border of the mandible in dentate patients. The edentulous mandibular ridge attained a buccal-lingual width of 6 mm at a mean distance of 4 mm below the ridge crest in this patient sample. A new classification system for the cross-sectional morphology of the anterior mandible was characterized and includes the following shapes: hourglass, ovoid, pear, sickle, and triangular. The pear was the most commonly visualized cross-sectional morphology among both edentulous and dentate patients. Conclusions: The sublingual artery and submental artery can be consistently identified in the anterior mandible using CBCT, both in dentate and edentulous patients. The SLA was located approximately 15mm above the inferior border of the mandible and the SMA was located approximately 5mm above the inferior border of the mandible. The mandibular incisive canal was not consistently visualized. The cross-sectional morphology of the anterior mandible is diverse in dentate and edentulous mandibles with pear shape being the most common in both situations. These findings should be taken into consideration when treatment planning for implants using CBCT or panoramic radiography.
Author: Dale A. Miles
Publisher: Elsevier Health Sciences
ISBN: 0323311792
Category : Medical
Languages : en
Pages : 265
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Book Description
This issue of Dental Clinics updates topics in CBCT and Dental Imaging. Articles will cover: basic principles of CBCT; artifacts interfering with interpretation of CBCT; basic anatomy in the three anatomic planes of section; endodontic applications of CBCT; pre-surgical implant site assessment; software tools for surgical guide construction; CBCT for the nasal cavity and paranasal sinuses; CBCT and OSA and sleep disordered breathing; update on CBCT and orthodontic analyses; liabilities and risks of using CBCT; reporting findings in a CBCT volume, and more!
Author: Yaser Safi
Publisher: John Wiley & Sons
ISBN: 1119667771
Category : Medical
Languages : en
Pages : 468
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Book Description
A comprehensive collection of oral and maxillofacial cases using cone beam CT imaging Atlas of Cone Beam Computed Tomography delivers a robust collection of cases using this advanced method of imaging for oral and maxillofacial radiology. The book features over 1,500 high-quality CBCT scans with succinct descriptions covering a wide range of maxillofacial region conditions, including normal anatomy, anomalies, inflammatory diseases, and degenerative diseases. Easy to navigate and featuring multiple images of normal variation and pathologies, the book offers readers guidance on the diagnostic values of CBCT, as well as CBCT images of the inferior alveolar nerve canal, dental implants, temporomandibular joint evaluations, and surgical interventions. The book also includes: A thorough introduction to cone beam computed tomography, including in vivo and in vitro preparation and evaluation, indications in dentistry, and indications in medicine Comprehensive explorations of cone beam computed tomography artefacts and anatomic landmarks Practical discussions of cone beam computed tomography of dental structure, including normal anatomy, anomalies, and the difficulties of eruption In-depth examinations of cone beam computed tomography of pathological growth and development, including maxillofacial congenital and developmental anomalies Perfect for graduate dental students and postgraduate dental students in oral and maxillofacial radiology, Atlas of Cone Beam Computed Tomography is also useful to general dentists, oral and maxillofacial radiologists, head and neck maxillofacial surgeons, head and neck radiologists, general radiologists, and ENT surgeons.
Author: Dr. SHREYA SHARMA
Publisher: Book Rivers
ISBN: 9355151470
Category : Antiques & Collectibles
Languages : en
Pages : 214
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Book Description
Author: Ryan L. Snyder
Publisher:
ISBN:
Category : Teeth
Languages : en
Pages : 324
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Book Description
The aim of the research is to determine if cone beam computerized tomography reconstructed panoramic radiography viewed in two different focal trough shapes, and three different focal trough widths changes the ability to identify high risk radiologic signs associated with an intimate anatomic relationship between third molars and the Inferior Alveolar Nerve. The basic assumption of this research is that a customized focal trough shape with a wider focal trough width at the third molar region will produce more high risk radiologic signs present when there is a relation between the third molar and the Inferior Alveolar Canal. A retrospective sample of 50 mandibular third molar teeth being less than 3mm from the Inferior Alveolar Canal were picked from the files of the i-CAT CBVCT here at the University of Louisville Radiology Department. The 50 teeth were reconstructed into panoramic images with two different arch shapes (customized and average form), and three different focal trough widths at the third molar region (10, 20, and 40mm). Six high risk radiological panoramic signs of the third molar related to the Mandibular canal will be evaluated at each tooth and determined to be present or absent by two independent observers. Each observer will also utilize the CBVCT cross sectional analysis of the mandible, measure the distance in mm, the mandibular canal to the closest part of the mandibular third molar tooth. With these observations we will be able to determine the presence or absence of the high risk radiological signs and actually see if the teeth that have the high risk radiological signs are associated with the Inferior Alveolar Nerve, related to the focal trough image layer widths. This analysis will be compared in the two focal trough image layer shapes to determine if a average form of dentition focal trough shape will present more radiographic markers than the customized focal trough shape. A Ordinal Logistic Regression will be performed to evaluate the relative impact of the predictor variables (radiographic signs, arch forms, and focal trough widths) to the outcome variables (distance of tooth to nerve-groups). Descriptive analysis will also be performed on each tooth to describe the comparison of radiological signs present, group that each tooth falls in related to distance of mandibular nerve in mm to the root of the third molar, whether nerve is buccal, lingual, or central to the root of the tooth, and if the nerve runs through the root, or the root is notched by the nerve. For all tooth images, radiographic signs will be determined whether they are present or absent using two observers as independent experts to determine accuracy. Ordinal logistic regression analysis will be used to measure the outcome of radiographic signs present with three categories (Cat. 1, 0-1mm, Cat. 2, 1.001-2mm, Cat. 3, 2+mm). Intraclass correlation coefficient will be used as a measure of agreement to measure both inter and intra rater variability. With respect to intra-observer variability, inter-observer variability, there were significant differences in intra-observer and inter-observer variability.
Author: Prashant P Jaju
Publisher: JP Medical Ltd
ISBN: 9351526399
Category : Medical
Languages : en
Pages : 133
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Book Description
Cone Beam Computed Tomography is an imaging technique in which x-rays diverge to form a cone. Cone Beam Computed Tomography: A Clinician’s Guide to 3D Imaging is a concise, highly illustrated manual on this increasingly important form of imaging in dentistry. Divided into twelve chapters, the book begins with a history of Cone Beam Computed Tomography, followed by chapters on the physics and apparatus of CBCT and the need for CBCT in dentistry. Further chapters cover the role of CBCT in specific sub-specialties of dentistry, and a glossary provides an explanation of CBCT terminology. The role of CBCT in prosthodontics, orthodontics and airway analysis, endodontics and caries diagnosis, oral and maxillofacial pathologies, periodontal disease and forensic odontology, is described in detail. This book also brings the reader up to date on possible future applications of CBCT in dentistry. Cone Beam Computed Tomography: A Clinician’s Guide to 3D Imaging includes 180 full colour images and illustrations, further enhancing this invaluable resource for dentists. Key Points Concise guide to 3D imaging in dentistry Includes a history and basics of CBCT, as well as the role of CBCT in various dentistry sub-specialties 189 full colour images and illustrations
Author: William C. Scarfe
Publisher: Springer
ISBN: 3319620614
Category : Medical
Languages : en
Pages : 1241
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Book Description
The book provides a comprehensive description of the fundamental operational principles, technical details of acquiring and specific clinical applications of dental and maxillofacial cone beam computed tomography (CBCT). It covers all clinical considerations necessary for optimal performance in a dental setting. In addition overall and region specific correlative imaging anatomy of the maxillofacial region is described in detail with emphasis on relevant disease. Finally imaging interpretation of CBCT images is presented related to specific clinical applications. This book is the definitive resource for all who refer, perform, interpret or use dental and maxillofacial CBCT including dental clinicians and specialists, radiographers, ENT physicians, head and neck, and oral and maxillofacial radiologists.
Author: Dr. NareshYedthare Shetty
Publisher: Shineeks Publishers
ISBN: 1632789523
Category : Education
Languages : en
Pages : 163
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Book Description
Cone Beam Computed Tomography is one of the new 3D imaging technologies used to identify the proximity of the inferior alveolar nerve to the impacted Mandibular third molar. Although Orthopantomogram has been used for a long period, CBCT is still considered a Gold Standard for planning the surgery and preventing nerve injury during Mandibular third molar surgery
Author: Antigoni Delantoni
Publisher: Springer Nature
ISBN: 3030968405
Category : Medical
Languages : en
Pages : 229
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Book Description
This atlas is a detailed and complete guide on imaging of the dentomaxillofacial region, a region of high interest to a wide range of specialists. A large number of injuries and patient’s treatment involve the facial skeleton. Enriched by radiographic images and illustrations, this book explores the anatomy of this region presenting its imaging characteristics through the most commonly available techniques (MDCT, CBCT, MRI and US). In addition, two special chapters on angiography and micro-CT expand the limits of dentomaxillofacial imaging. This comprehensive book will be an invaluable tool for radiologists, dentists, surgeons and ENT specialists in their training and daily practice.
