Definition: Non-physiologic wearing of teeth caused by external objects such as toothbrushes, toothpicks, or hairpins.
Radiographic Features:
- Location:
- Toothbrush: Cervical region on facial surfaces
- Toothpick: Interproximal areas
- Hairpin: Incisal edges
- Edge: Well-defined area of missing tooth structure
- Shape:
- Toothbrush: Linear
- Others: Matches shape of abrasive object
- Internal: Radiolucent area where tooth structure is missing
- Number: May be single or multiple
Key Diagnostic Signs:
- Well-defined radiolucent area in characteristic locations
- Shape often indicates cause of abrasion
Clinical Significance:
- Can lead to tooth sensitivity
- May predispose to caries if in areas of plaque accumulation
- Indicates need for patient education on proper oral hygiene techniques
- Severe cases may require restoration to protect remaining tooth structure
Note: Radiographic appearance should be correlated with clinical examination. Differentiation from erosion and attrition is important for proper management. Identifying the cause is crucial for preventing further damage.