Classification of discoloration
- Intrinsic discoloration
- Extrinsic discoloration
- Combination of both
1.Based on the Etiology of tooth discoloration
Intrinsic stains
- • Pre-eruptive causes– Disease
i. Alkaptonuria - iiHematological disorders
iii. Disease of enamel and dentin - iv. Liver diseases.– Medications
i. Tetracycline stains and other antibiotic use - ii. Fluorosis stain.
- • Posteruptive causes of discoloration– Pulpal changes– Trauma– Dentin hypercalcification– Dental caries– Restorative materials and operative procedures – Aging
– Functional and parafunctional changes.
Extrinsic stains
• Daily acquired stains
– Plaque– Food and beverages – Tobacco use– Poor oral hygiene– Swimmer’s calculus
– Gingival hemorrhage.