How do cavities form between teeth?
You’re probably aware that cavities form when bacteria feed on sugars and starches, producing acid that eats away at enamel. But did you know that cavities can also develop in hidden areas — including between your teeth?
With nearly 90 percent of adults over age 20 having had at least one cavity, the likelihood of developing an interproximal cavity (a cavity between the teeth) is relatively high. Luckily, these cavities can be filled just like any other.
How is a cavity between teeth filled?
An interproximal cavity forms on the surface of a tooth that touches the neighboring tooth. These cavities are often more difficult to spot during a standard exam, so your dentist will likely use a bite-wing X-ray to detect them. This imaging technique allows your dentist to see decay hidden between teeth.
- Early-stage cavities may appear as white spots and can sometimes be reversed with a fluoride treatment.
- Advanced cavities that cause pain or sensitivity will require a filling.
Filling an interproximal cavity is similar to a routine cavity filling. Your dentist will remove the decayed portion and restore the tooth using one of the following materials:
- Gold: Long-lasting and durable, but also expensive
- Composite resin: Matches tooth color but may chip or wear over time
- Silver amalgam: Strong and long-lasting, though not recommended for some women due to mercury content
- Ceramic/porcelain: Stain-resistant and durable, but as costly as gold
For teeth that can’t support a regular filling but don’t require a crown, indirect fillings are a great option. These are custom-made in a dental lab and placed during a second visit.
Taking care of your filling
You may experience mild soreness or sensitivity for up to two weeks after receiving a filling. Tip: Avoid extremely hot, cold, or sugary foods during this time, and use desensitizing toothpaste if needed.
If sensitivity lasts beyond two weeks or if your filling cracks or feels off, visit your dentist for an evaluation.
To make your filling last as long as possible:
- Brush carefully around the filling
- Floss daily to reach tight spaces between teeth
- Use fluoride-infused mouthwash to protect enamel and strengthen teeth
Schedule an appointment with Espire Dental today!
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