View
221
Download
2
Tags:
Embed Size (px)
Citation preview
DENT 5102, Fall 2007
Unit 2. Restorative Materials
Unit 3. Dental Caries
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
Restorative Materials (Cont.)
• Group III. Porcelain
• Group IV. Radiolucent. Calcium hydroxide, composite, resin
Radiographic Interpretation of Dental Caries
Unit 3
Severity of Caries
• Early, incipient (1st degree)
• Moderate (2nd degree)
• Advanced (3rd degree)
• Extensive (4th degree)
Caries Progression
Location of Caries
• Occlusal, incisal
• Proximal
• Lingual, palatal
• Facial
• Cemental
• Recurrent
Incipient Caries
Occlusal Caries
Occlusal Caries
Proximal Caries
Proximal Caries
Proximal Caries
Cemental Caries
Recurrent Caries
• Caries immediately next to a restoration
• Inadequate margins or excavation
• Pulpal necrosis
• Metallic restorations often hide
• Clinical examination
Recurrent Caries
Recurrent Caries
Adumbration (Cervical Burnout)
Occlusal Caries
Adumbration
Adumbration
• Between CEJ and alveolar crest
• Diffuse radiolucency
• Ill-defined borders
• Presence of the edge of root
• Clinical evaluation
Adumbration
Caries: Xerostomia
• Therapeutic radiation
• Xerostomia
• Sjogren’s syndrome
• Caries begins at cervical region
• Extensive decay
Rampant Caries
• Children
• Poor dietary habits
• Extensive caries
• Proximal and smooth surface
• Socio-economic factors
Rampant Caries
Rampant Caries
Factors In Caries Diagnosis
• Location of the tooth
• Surface involved
• Size of the carious lesion
• Restoration, material
• X-ray beam angulation
• Film placement
Factors In Caries Diagnosis
• Film type
• Developer solution – age
• kVp
• mAs
• Room lighting
• Observer