How Long Do Dental Sealants Last?

Dental sealants can last for several years, although there is no exact expiration date. One person may keep the same sealants for a long time, while another may need a repair much sooner. It depends on where the sealant was placed, how the teeth come together, and how much wear it gets from chewing.

A sealant is a thin coating placed over the grooves of a back tooth. Those grooves can be surprisingly deep. Food and plaque settle into them easily, and sometimes a toothbrush cannot reach the bottom. The sealant covers the area and helps keep bacteria away from the tooth.

Most sealants stay in place for a number of years. Five years is a common estimate, but some last longer. Others may begin wearing down before then. This does not always happen all at once. A sealant can slowly become thinner or lose a small piece around the edge without causing pain or any obvious change.

That is why dentists look at sealants during regular checkups. They can usually tell right away whether the material is still covering the tooth properly. When only a small section has worn away, more sealant can often be added. The entire coating does not always have to be removed and replaced.

Regular eating and chewing are enough to cause some wear over time. Back teeth handle a great deal of pressure, especially when biting into hard or crunchy foods. That does not mean someone with sealants has to follow a special diet. Most people can eat normally. Still, chewing ice, biting fingernails, or using the teeth to tear open packaging can damage both the sealant and the tooth underneath.

Grinding and clenching can make sealants wear down faster too. People who grind their teeth at night may not know they are doing it. A dentist may notice flattened teeth, small cracks, or unusual wear during an exam. In some cases, a night guard may be recommended to protect the teeth.

Children often receive dental sealants soon after their permanent molars come in. Because their mouths are still changing, those sealants should be checked regularly. New teeth may change the bite, and children are also more likely to chew on pencils, toys, or other hard objects.

If a sealant falls off, it is usually not painful. In fact, many people never notice. The tooth underneath is not damaged simply because the sealant is gone. It has just lost that extra layer of protection, which means food and plaque can begin collecting in the grooves again.

There is no special cleaning routine for sealed teeth. They should be brushed just like the rest of the mouth. Flossing is still needed as well, since sealants do not cover the spaces between teeth or the area near the gums. They are helpful, but they do not prevent every type of cavity.

The age of a sealant is not always the best way to judge whether it is still working. A sealant that has been in place for seven years may still look fine. Another may need attention after only a couple of years. What matters is whether the material is still attached and covering the grooves.

So, how long do dental sealants last? For many patients, they provide protection for several years. Regular dental visits are the easiest way to make sure they are still doing their job.

If you or your child has sealants that have not been checked recently, call our dental office today. We can examine them, repair any worn areas, and help keep the back teeth protected from cavities.

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