Can weakened tooth enamel be repaired? Yes, as long as the erosion hasn't caused it to disappear entirely. But keeping tooth enamel healthy is most effective when done through prevention. Using an enamel-strengthening toothpaste is a great first step, but you can also change some damaging behaviors to do your teeth a lasting favor. If bruxism is a problem, talk to your dentist about receiving a mouth guard to avoid enamel erosion as you sleep. You can also avoid acidic foods, or opt to drink soda or juice through a straw so it avoids your teeth. If you do indulge in sweet or acidic treats, sip water while you eat to help wash away particles that can cling to your teeth.
Lastly, keep in mind a medication you're taking may be causing any ongoing enamel erosion (aspirin is a common issue). So, talk to your doctor. In some cases, you may be able to alter dosages or switch to a similar medication. And if you must stay on a current prescription, your doctor might suggest taking a calcium supplement to help your body protect your enamel in the process.
From food, to medication, to drinks and the daily grind, enamel can take a beating. But you don't need to live with enamel erosion; the right products and care can help ensure your smile is as strong as it is healthy.