By ADA dentist Dr. Gene Romo
When you have a cold or the flu, taking care of your body is your top priority—and that includes your mouth.
Practice Good Hygiene
When you’re sick, you know to cover your mouth when you cough and sneeze. Don’t forget to keep up your dental and toothbrush hygiene as well.
According to the CDC, the flu virus can live on moist surfaces for 72 hours. “The number one rule is not to share your toothbrush anytime, but especially when you are sick,” Dr. Romo says.
You also probably don’t need to replace your toothbrush after you’ve been sick. Unless your immune system is severely compromised, the chances of reinfecting yourself are very low. “But if you’re still in doubt, throw it out,” says Dr. Romo. “Especially if you’ve had your toothbrush for 3-4 months, when it’s time to replace it anyway.”
Choose Sugar-Free Cough Drops
Read the label before you pick up a bag at the drug store with an eye to avoid ingredients like fructose or corn syrup. “Many cough drops contain sugar, and it is like sucking on candy,” says Dr. Romo. “Sugar is a culprit when it comes to cavities.” The longer you keep a sugary cough drop in your mouth, the more time cavity-causing bacteria has to feast on that sugar, which produces the acid that can leave holes in your teeth.
Swish and Spit After Vomiting
One unfortunate side effect of a stomach flu, among other illnesses, is vomiting. You might be tempted to brush your teeth right away, but Dr. Romo says it’s actually better to wait. “When you vomit, stomach acids are coming in contact with your teeth and coating them,” he says. “If you brush too soon, you’re just rubbing that acid all over the hard outer shell of your teeth.”
Instead, swish with water, a diluted mouth rinse or a mixture of water and 1 tsp. baking soda to help wash the acid away. Spit, and brush about 30 minutes later.
Stay Hydrated to Avoid Dry Mouth
When you’re sick, you need plenty of fluids for many reasons. One is to prevent dry mouth. Not only is it uncomfortable—dry mouth can also put you at greater risk for cavities. The medications you might be taking for a cold or flu—such as antihistamines, decongestants or pain relievers—can also dry out your mouth, so drink plenty of water and suck on sugarless cough drops, throat lozenges or candies to keep that saliva flowing.
Choose the Right Fluids
When it comes to your mouth and your body, one beverage is always best. “The safest thing to drink is water,” Dr. Romo says. “Sports drinks might be recommended to replenish electrolytes when you’re sick, but drink them in moderation and don’t make them a habit after you’ve recovered because unless they are a sugar free version, they contain a lot of sugar.”
You might also want something to warm you up. “When you have a cold or the flu, you may want something comforting to get through it, like tea,” he says. “Try not to add sugar or lemon if you can avoid it. Sugar can helps to fuel cavity-causing bacteria, and lemon is acidic. It’s something to keep in mind once you’re feeling 100% again, as well.”