05/10/2026
Why can patients still get cavities under crowns or bridges?
1. Were all cavities completely removed before the crown or bridge was cemented?
If decay is not fully removed prior to treatment, bacteria can continue progressing underneath the restoration over time.
2. How were the teeth prepared and how well were the crowns made?
The quality of the tooth preparation, crown material, and crown design are very important. Poorly fitting crowns with open margins, overhangs, or improper contours can trap plaque and bacteria, increasing the risk of recurrent decay.
3. How is the patient’s oral hygiene and home care?
Even excellent dental work still requires proper brushing, flossing, and regular maintenance. Plaque buildup around crowns and bridges can eventually lead to cavities and gum disease if not cleaned well.
Additional factors can also include:
* Dry mouth
* High sugar intake
* Teeth grinding/clenching
* Smoking
* Irregular dental visits
* Aging restorations over time
A crown or bridge is not “cavity-proof.” The longevity of dental work depends on both the quality of the dentistry and the patient’s long-term home care and maintenance.
Divine Dental Solutions, Dental Practice of Dr. Peter Vang Ly 916-399-9910
