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EO 005.06 Abnormal Radiographic Anatomy. UNCLASSIFIED//REL TO NATO/ISAF. Radiographic Interpretation of Dental Caries. Severity of Caries. Early, incipient Moderate Advanced and Extensive . Caries Progression. Location of Caries. Occlusal, incisal Proximal Lingual, palatal Facial
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EO 005.06 Abnormal Radiographic Anatomy UNCLASSIFIED//REL TO NATO/ISAF
Severity of Caries • Early, incipient • Moderate • Advanced and Extensive
Location of Caries • Occlusal, incisal • Proximal • Lingual, palatal • Facial • Cemental • Recurrent
Recurrent Caries • Caries immediately next to a restoration • Inadequate margins or excavation • Pulpal necrosis • Metallic restorations often hide • Clinical examination
Caries: Xerostomia • Therapeutic radiation • Xerostomia • Caries begins at cervical region
Adumbration • Between CEJ and alveolar crest • Diffuse radiolucency • Ill-defined borders • Presence of the edge of root • Clinical evaluation
Usefulness of Radiographs • Amount of bone present • Condition of alveolar crest • Bone loss in furcation areas • Width of periodontal ligament • Local factors: calculus, overhanging restorations • Crown/root ratio
Limitations of Radiographs • No indication of morphology of bony defects • No indication of successful management • No indication of hard/soft tissue relationship, i.e., depth of pockets
Normal Alveolar Crest • 1.0-1.5 mm apical to cemento-enamel junction • Parallel to line joining the CEJ of adjoining teeth • Smooth • Continuation of lamina dura, has the same radiopacity
Evidence of Early Periodontitis • Localized erosion of crest of bone • Blunting of crest- anterior teeth • Loss of sharp angle between lamina dura and crest • Widening of PDL near crest
Local Factors • Calculus • Overhanging restorations • Poor restoration contours
Direction Of Bone Loss Horizontal Bone Loss: Crest of bone is parallel to CEJ line between adjoining teeth. The remaining bone is still horizontal but may be positioned apically.
Direction Of Bone Loss Vertical bone loss Crest of remaining bone is not parallel to the CEJ line between adjoining teeth (displays an oblique angulation to the CEJ line )
Bitewing Radiographs Most Reliable For Crestal Bone Evaluation