dent 5102, fall 2007 unit 2. restorative materials unit 3. dental caries
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DENT 5102, Fall 2007
Unit 2. Restorative Materials
Unit 3. Dental Caries
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Restorative Materials
• According to radiographic density beginning with most radiopaque
• Group I. Gold alloys, amalgam,silver• Group II. Gutta percha, zinc
oxyphosphate or other base materials, composite with opacifier, rubber base impression material, calcium hydroxide with opacifier
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Restorative Materials (Cont.)
• Group III. Porcelain
• Group IV. Radiolucent. Calcium hydroxide, composite, resin
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Radiographic Interpretation of Dental Caries
Unit 3
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Severity of Caries
• Early, incipient (1st degree)
• Moderate (2nd degree)
• Advanced (3rd degree)
• Extensive (4th degree)
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Caries Progression
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Location of Caries
• Occlusal, incisal
• Proximal
• Lingual, palatal
• Facial
• Cemental
• Recurrent
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Incipient Caries
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Occlusal Caries
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Occlusal Caries
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Proximal Caries
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Proximal Caries
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Proximal Caries
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Cemental Caries
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Recurrent Caries
• Caries immediately next to a restoration
• Inadequate margins or excavation
• Pulpal necrosis
• Metallic restorations often hide
• Clinical examination
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Recurrent Caries
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Recurrent Caries
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Adumbration (Cervical Burnout)
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Occlusal Caries
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Adumbration
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Adumbration
• Between CEJ and alveolar crest
• Diffuse radiolucency
• Ill-defined borders
• Presence of the edge of root
• Clinical evaluation
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Adumbration
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Caries: Xerostomia
• Therapeutic radiation
• Xerostomia
• Sjogren’s syndrome
• Caries begins at cervical region
• Extensive decay
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Rampant Caries
• Children
• Poor dietary habits
• Extensive caries
• Proximal and smooth surface
• Socio-economic factors
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Rampant Caries
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Rampant Caries
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Factors In Caries Diagnosis
• Location of the tooth
• Surface involved
• Size of the carious lesion
• Restoration, material
• X-ray beam angulation
• Film placement
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Factors In Caries Diagnosis
• Film type
• Developer solution – age
• kVp
• mAs
• Room lighting
• Observer