Summer means more time in the pool, and there’s nothing better than a long swim on a hot day. But most swimmers likely don’t think about what all that pool time is doing to their teeth. While stains and discoloration are a concern, teeth whitening can fix that issue. Where it gets dangerous is enamel erosion. Keep reading to see how pools affect teeth and learn what you can do to protect your smile.
What’s the Deal with Pool Water?
Swimming pools are treated with chlorine to keep the water clean and safe, but it’s not the chemical itself that does the most damage. The real culprit is the pool’s pH level. Properly maintained pools are kept at a slightly alkaline pH around 7.2 to 7.8. This is pretty close to neutral, so it poses little risk to your enamel. However, when pools aren’t looked after carefully—whether residential, commercial, or public—the pH can drop into acidic territory.
When this happens, it can gradually erode tooth enamel over time—a condition sometimes called “swimmer’s erosion.” While it won’t happen just because you spent a few hours in the pool one weekend, regular, prolonged exposure to improperly balanced water adds up.
Chlorine and Tooth Staining
Even in properly maintained pools, chlorine can cause surface staining over time. Swimmers who spend a lot of time in the water may notice a yellowish-brown tinge developing, sometimes called “swimmer’s calculus.”
This type of staining tends to accumulate on the front teeth and can be stubborn to remove with brushing alone. Professional teeth whitening is often the most effective way to address it once it develops.
What About Saltwater Pools?
Saltwater pools are a popular alternative, and many swimmers assume they’re automatically gentler on teeth. Saltwater pools do still use chlorine—they just generate it differently through a saltwater system. The pH concerns are similar, so the same measures need to be taken regardless of the pool type.
How to Protect Your Smile
A few simple habits go a long way toward protecting your teeth during swim season:
- Keep your mouth closed while swimming whenever possible to reduce exposure to pool water.
- Rinse your mouth with plain water after swimming to wash away any residual chemicals.
- Stay hydrated. Saliva is your mouth’s natural defense against acid, and drinking water helps it flow.
- See your dentist for regular checkups so they can catch signs of enamel erosion or staining before they get worse.
If you’ve noticed sensitivity or discoloration after a summer of swimming, it’s worth bringing up at your next dental appointment. Your dentist can check your teeth and recommend just the right treatment to get your smile back in shape.
About The Author
Dr. Steve Cha is a talented dentist with a doctorate from the Loma Linda University School of Dentistry. With over 20 years of experience and extensive training through SPEAR Education, Dr. Cha offers professional teeth whitening and comprehensive dental care at Lake Forest Dental of McKinney. To brighten your swimmer’s smile, give us a call at (972) 529-1800.