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The clinical value of X-ray images of the teeth and jawsLaetitia BROCKLEBANK University of Glasgow, Scotland © l.m.brocklebank 1
Wilhelm Roentgen 27.03.1845 Lennep 8.11.1895 Wurzburg© l.m.brocklebank
von Kölliker’s hand © l.m.brocklebank
why X-ray the teeth and jaws? © l.m.brocklebank
Abnormalities affecting the teeth and jawsdevelopmental traumatic inflammatory cystic neoplastic osteodystrophies metabolic/systemic idiopathic foreign bodies © l.m.brocklebank
Presentation plan what is a radiographic image?radiographic views for teeth and jaws critical production factors types of abnormalities normal dental development examples © l.m.brocklebank
Image - radiographic imagea pictorial representation of a part of the body a record of the pattern of attenuation of the X-ray beam after it has passed through matter © l.m.brocklebank
Dental radiographic viewsIntra-oral bitewings periapicals occlusals Extra-oral panoramic © l.m.brocklebank 39 25
Bitewings side teeth (premolars and molars)symmetry of upper and lower teeth minimal overlap of adjacent teeth inter-dental bone © l.m.brocklebank
Periapical shows the full length of at least one tooth peri = aroundapical - the apex or tip of the tooth surrounding anatomical features © l.m.brocklebank
Periapical similar to a zoom image© l.m.brocklebank
Panoramic like a wide-angle view© l.m.brocklebank
Occlusal radiography © l.m.brocklebank
Critical production factorsadequate kV: for intra-orals fastest image receptor available – F, E or digital correct positioning: use of film holders correct horizontal and vertical angulation appropriate collimation correct exposure time proper processing facilities © l.m.brocklebank
Abnormalities affecting the teeth and jaws - examplesdevelopmental traumatic inflammatory cystic neoplastic osteodystrophies metabolic/systemic idiopathic foreign bodies artefacts iatrogenic © l.m.brocklebank
Normal dental developmentdeciduous - 20: incisors canines premolars - 0 molars permanent - 32: incisors canines premolars - 8 molars <12 © l.m.brocklebank
Dental development and abnormalitiesnumber increase or decrease position form individual or multiple © l.m.brocklebank
Inflammatory lesions tooth - dental caries (decay)supporting structures periodontal disease - bone level around the root tip bone - inflammation and infection © l.m.brocklebank
Cystic lesions of the jawsodontogenic radicular dentigerous keratocyst non-odontogenic nasopalatine solitary bone cyst Stafne cavity © l.m.brocklebank
Neoplastic, odontogenicbenign cementomas cementifying fibroma myxoma ameloblastoma * adenomatoid odontogenic tumour calcifying epithelial odontogenic tumour © l.m.brocklebank
Neoplastic, odontogenicameloblastoma * Neoplastic, odontogenic male, 15, clinical expansion definite root resorption thinning of cortex lingually no cortex evident buccally findings suggest a locally aggressive lesion © l.m.brocklebank
What do you see? © l.m.brocklebank
family group Bart van der Leck The family, 1921 © l.m.brocklebank
Hidden pathology © l.m.brocklebank
EXPOSURE AND TECHNIQUE ERRORS
Copyright ©2012 by Pearson Education, Inc. All rights reserved. Essentials of Dental Radiography for Dental Assistants and Hygienists, Ninth Edition Evelyn.
Copyright © 2012, 2006, 2000, 1996 by Saunders, an imprint of Elsevier Inc. Chapter 20 Exposure and Technique Errors.
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Resource Reading: Chapter 17 – pp. 158 – end of chapter.
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14 The Periapical Examination-Paralleling Technique.
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OCCLUSAL EXPOSURE TECHNIQUES. At times, more extensive radiographic views of oral tissues are desired than are obtainable with periapical or bite-wing.
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18 Identifying and Correcting Undiagnostic Radiographs.
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Copyright © 2012, 2006, 2000, 1996 by Saunders, an imprint of Elsevier Inc. Chapter 21 Occlusal and Localization Techniques.
24 The Use of Radiographs in the Detection of Dental Caries.
M. Malik Afroz. FORMAT INTRODUCTION HISTORY CLASSIFICATION OF FILMS COMPOSITION OF FILMS CONCLUSION.
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Copyright © 2006 Thomson Delmar Learning. ALL RIGHTS RESERVED. 1 PowerPoint ® Presentation for Dental Radiology with Labs Module: Dental Radiology.
Radiography. Roentgen tube – x- ray tube: Cathode – anode – tension Catode (heated) - electrons –against anode – brake - x ray radiation originates.
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22 Recognizing Normal Radiographic Anatomy.
1 MEET DEXTER!. 2 Our TOUGHEST Patient! 3 Your Clinical Requirements DEXTER- FOR PRACTICE –A FULL SERIES USING ANALOG FILM AND RINNS. –A FULL SERIES.
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