How 8 Hours of Sleep Keeps Your Mouth Happy

Focus on a clock while a person sleeps in the background.

With long to-do lists, it’s tempting to stay up later to get stuff done. But getting the recommended amount of sleep—7 to 9 hours for adults—is still important, even more so when you feel busy and overwhelmed.

What makes sleep such an integral part of your oral health?

Well, if you’re tired and run down, your immune system probably is too. A weak immune system leaves the door open for bacteria or other germs to invade, cause canker or cold sores, and make you more susceptible to gum disease.

Sleep deprivation can also cause memory lapses, which means your usual diligence in brushing after meals and remembering to floss before bed may be left by the wayside. In fact, if you’re too tired, you may end up totally skipping your bedtime oral health routine in favor of your soft, fluffy pillow or waking up too late to do the proper brushing and flossing in the morning.

How does sleep affect your diet?

Not getting enough sleep is the cause of many failed diets, which is as bad for teeth as it is for waistlines. When we’re tired, people have a tendency to eat more and think about it less. Therefore, you may be making bad food choices for your teeth simply because you’re sleepy. If you are drinking caffeine-loaded soda and energy drinks to stay awake, you may also be harming your teeth. These drinks often contain high levels of sugar and acid that can lead to tooth decay and tooth erosion over time.

Boost your health by getting the recommended amount of sleep as often as possible. Not only will you be well rested and happy, your teeth will be too!


Editors Note: This post was originally published June 2012. The content was revised and updated October 2023.

Previous articleMouth Healthy Recipe: Watermelon Slushies
Next articleBrushing to Independence: 4 Tips for Toddler Teeth Brushing
Sandi Perez
Sandi Ernst Perez, Ph.D., joined Delta Dental of Arizona in 2006 and has a dual role as vice president of community benefit and executive director of the Delta Dental of Arizona Foundation. A champion for the mouth-body connection in health and wellness, she works to fulfill the Foundation's mission to improve the oral health of underserved and uninsured populations across the state by educating the public, increasing awareness and providing grants, leadership and technical assistance. Originally from Ohio, she has lived in Arizona since 1992 with her husband, two children (one still in braces) and four rescue dogs. That translates into 296 teeth to take care of! [Editor's Note: Sandi is no longer a current DDAZ employee.]