Caries is one of the most common dental diseases. But did you know a tooth can decay even after a filling? This is called secondary caries.
What is secondary caries?
It’s the re-decay of tooth structure under or near an existing filling, crown, or restoration. It occurs when bacteria enter microgaps between the tooth and the filling material.
Main causes:
- Poor seal between tooth and filling
- Inadequate prior treatment
- Wear of the restoration over time
- Poor oral hygiene
- Hidden decay missed during earlier check-ups
Symptoms:
- Pain or sensitivity when biting
- Discoloration around the filling
- Bad breath
- Roughness felt with the tongue
- Gaps between the filling and tooth
Note: Secondary caries may be asymptomatic.
Treatment includes
- Removal of the old filling
- Thorough cleaning of the cavity
- Root canal treatment (if needed)
- New filling or crown
Prevention tips
- Visit your dentist regularly (2x per year)
- Monitor old fillings
- Act immediately on symptoms
- Maintain hygiene: brushing, flossing, rinsing
- Use remineralizing products if teeth are sensitive
If you suspect secondary caries — don’t delay. At Kadrioru Plaza, our experienced doctors use pain-free techniques and modern diagnostics to restore your teeth and comfort.
