That’s a hard, protective layer that helps your teeth deal with everything you put them through. When it’s gone, nerve endings that cause pain are exposed.

If you have sensitive teeth, it’s possible some of your enamel has worn away.

So, Don’t brush too hard. You might be taking off more than just plaque. Side-to-side brushing right at the gum line can make your enamel go away faster. You should use a soft-bristled brush and work at a 45-degree angle to your gum to keep enamel clean and strong.

Avoid acidic foods and drinks. Soda, sticky candy, high-sugar carbs — all of these treats attack enamel. Instead, snack on:

 Fiber-rich fruits and vegetables

 Cheese

  Milk

  Plain yogurt

These will moisten your mouth and help fight acid and bacteria that can eat away at your teeth. Saliva is one way your mouth deals with them.

You can also drink green or black tea or chew sugarless gum. If you do eat something acidic, don’t rush to brush. Wait an hour or so to strengthen before you scrub. Unclench your teeth. Over time, teeth grinding wears away your enamel. Sometimes, addressing your stress can stop the problem. If that doesn’t work, we can fit you for a splint or a mouth guard.

If the problem is severe, you may need dental work to change your teeth’s position, or a muscle relaxant. Take a break from bleaching. The quest for pearly whites may cause your pain. Thankfully, sensitivity from bleaching is usually temporary. Talk to your dentist about how the treatment might be affecting you, and whether you should continue it.

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