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 (1 st degree) Moderate (2 nd degree) Advanced (3 rd degree) Extensive (4 th degree)

Caries Progression

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

Incipient Caries

Occlusal 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

Adumbration (Cervical Burnout)

Occlusal Caries

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

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