2. DENT 5102, Fall 2007 Unit 2. Restorative Materials Unit 3. Dental Caries

3. 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

4. Restorative Materials (Cont.) Group III. Porcelain Group IV. Radiolucent. Calcium hydroxide, composite, resin

13. Radiographic Interpretation of Dental Caries Unit 3

14. Severity of Caries Early, incipient (1 st degree) Moderate (2 nd degree) Advanced (3 rd degree) Extensive (4 th degree)

15. Caries Progression

16. Location of Caries Occlusal, incisal Proximal Lingual, palatal Facial Cemental Recurrent

17. Incipient Caries

19. Occlusal Caries

22. Proximal Caries

26. Cemental Caries

27. Recurrent Caries Caries immediately next to a restoration Inadequate margins or excavation Pulpal necrosis Metallic restorations often hide Clinical examination

28. Recurrent Caries

30. Adumbration (Cervical Burnout)

31. Occlusal Caries

32. Adumbration

33. Between CEJ and alveolar crest Diffuse radiolucency Ill-defined borders Presence of the edge of root Clinical evaluation

34. Adumbration

35. Caries: Xerostomia Therapeutic radiation Xerostomia Sjogren’s syndrome Caries begins at cervical region Extensive decay

39. Rampant Caries Children Poor dietary habits Extensive caries Proximal and smooth surface Socio-economic factors

40. Rampant Caries

42. Factors In Caries Diagnosis Location of the tooth Surface involved Size of the carious lesion Restoration, material X-ray beam angulation Film placement

43. Factors In Caries Diagnosis Film type Developer solution – age kVp mAs Room lighting Observer