Cavities are a common dental problem, but what happens if decay comes back in the same spot after getting it treated? That’s called recurrent tooth decay, and it’s actually more common than you think. Tooth decay happens when bacteria in your mouth break down the enamel.
If decay creates a hole in the enamel, it forms what we call a cavity. Luckily, dentists can fix cavities with fillings, which seal up the damage and protect the tooth. But just because a cavity has been treated doesn’t mean that same tooth is completely safe from future decay. Understanding how recurrent decay happens can help you learn how to keep your teeth healthy.
Can a Cavity Come Back After Treatment?
Once a dentist removes a cavity and fills the hole, that specific spot of decay is gone for good. However, you can still get a new cavity on the same tooth, sometimes even underneath an old filling.
Fillings don’t last forever. Over time, they can wear down, crack, or even pull away from the tooth slightly. When this happens, tiny gaps can form between the filling and the tooth. The gaps allow bacteria to sneak in and start causing decay all over again.
Since these new cavities form under a filling or around its edges, they’re often harder to spot on your own. This is why regular dental checkups are so important. Your dentist can catch and treat decay before it causes bigger problems.
How Do Dentists Treat Recurrent Tooth Decay?
Fixing a new cavity on a tooth that already has a filling is a lot like treating a regular cavity. The dentist will remove the decayed portion of the tooth to prevent the damage from spreading. If the cavity is underneath a filling, the dentist will first need to take out the old filling before cleaning out the decay.
If the damage is minor, your dentist can simply place a new filling to restore the tooth. But a filling might not be enough if the decay has spread too far. In those cases, a dental crown is the better treatment. A crown is a custom-made cap that fits over the entire tooth. It provides extra strength and protection to prevent future damage.
How Can I Prevent Recurrent Tooth Decay?
The best way to avoid recurrent cavities is to take care of your fillings and keep up with healthy oral habits.
Protect Your Fillings
With proper care, a dental filling can last around ten years or more. But some habits can wear them down faster, increasing your risk of recurrent decay. To protect your fillings:
- Avoid biting on hard objects like ice, pens, or fingernails.
- If you grind your teeth at night, consider wearing a nightguard to protect your dental work.
- Be careful when eating super-sticky or chewy foods that could pull at a filling.
Practice Good Oral Hygiene
Keeping your teeth clean is key to preventing cavities, whether they’re new or recurrent. Make sure to:
- Brush twice a day with a fluoride toothpaste.
- Floss daily to remove plaque and food particles from between your teeth.
- Use a mouthwash that helps fight bacteria and strengthen enamel.
See Your Dentist Regularly
Routine dental checkups are crucial for catching problems early. Your dentist will check your fillings for signs of wear and look for any hidden decay under or around them. Professional cleanings also remove plaque and tartar buildup that brushing and flossing can’t get rid of.
If it’s been a while since your last visit, now’s a great time to schedule an appointment. Keeping up with regular care can help you avoid the hassle of dealing with recurrent tooth decay and keep your smile healthy.