As swim season approaches, many families are excited to spend long days at the pool, relaxing in the sun, and cheering on their favorite local swim team! While swimming is a fantastic way for children to stay active and have fun, there’s a lesser-known side effect parents may start to notice; discoloration on their child’s teeth, often referred to as “swimmer’s stain.”
Swimmer’s stain typically appears as a yellow, brown, or even greenish stain along some of the teeth. It’s most commonly seen in children who spend extended time in pools, especially over the course of a swim season. The cause isn’t poor brushing habits, but rather a chemical reaction. Chlorine is an essential part of keeping a swimming pool clean and free of bacteria, but also may cause a decrease in the pH of the pool water. Acidic water (low pH) increases the likelihood of enamel erosion, which may allow staining particles to penetrate the surface layer of the tooth. Algaecides and pool cleaning products may contain copper and iron, which can bind to the freshly eroded enamel, resulting in that greenish/brownish discoloration.
The good news is that swimmer’s stain is largely preventable! Encouraging children to rinse their mouth with fresh water after swimming can help wash away residual pool chemicals before they settle on the teeth. Staying hydrated is also important, as saliva naturally helps protect and cleanse the teeth. Regular brushing twice a day with a fluoride toothpaste remains essential, especially after long swim sessions. For children who are frequent swimmers or part of a swim team, maintaining consistent dental checkups during the season can also help catch and manage any staining early.
If staining does occur, it’s important for parents to know that it is rarely permanent and can be treated safely and effectively! Professional dental cleanings are very successful at removing swimmer’s stain without damaging the enamel. In most cases, no additional treatment is necessary beyond a thorough cleaning performed in a dental office.
While swimmer’s stain is generally harmless, any noticeable changes in your child’s teeth can understandably raise concern. If you begin to see discoloration or have questions about your child’s oral health, it’s always a good idea to schedule a consult. A dental professional can evaluate the cause, provide reassurance, and recommend the best course of action.
As you and your family dive into swim season, a little awareness can go a long way in keeping those smiles bright. With a few simple preventive steps and routine care, your child can enjoy every moment in the pool, and leave those stains behind!
