--- title: Your Teeth Cleaning Could Help Prevent Pneumonia description: A new study suggests that regular dental visits may protect against pneumonia by reducing levels of harmful bacteria in the mouth. canonical: https://time.com/4548398/teeth-cleaning-pneumonia/ author: TIME article:opinion: false article:content_tier: free article:published_time: 2016-11-01T13:44:57.000Z article:modified_time: 2026-02-23T01:28:45.629Z article:section: Health og:title: How a Teeth Cleaning Might Protect You From Pneumonia og:description: Dentist appointments are good for more than just a pretty smile og:url: https://time.com/4548398/teeth-cleaning-pneumonia/ og:site_name: TIME og:image: https://static.time.com/v3/assets/bltea6093859af6183b/blt3b7b99bc6925d38e/698878c2cd1bba14846fee9d/toothbrushes-health-clean-home-daily-routine.jpg?branch=production&width=1200&quality=75&auto=webp&crop=16:9 og:image:width: 2500 og:image:height: 1406 og:image:alt: toothbrushes-health-clean-home-daily-routine-motto-stock og:type: article twitter:card: summary_large_image twitter:title: How a Teeth Cleaning Might Protect You From Pneumonia twitter:description: Dentist appointments are good for more than just a pretty smile twitter:image: https://static.time.com/v3/assets/bltea6093859af6183b/blt3b7b99bc6925d38e/698878c2cd1bba14846fee9d/toothbrushes-health-clean-home-daily-routine.jpg?branch=production&width=1200&quality=75&auto=webp&crop=16:9 ---  # How a Teeth Cleaning Might Protect You From Pneumonia > Sponsored content. Supplied in partnership with TIME. TIME is the sponsor and source of this material. > Last updated: September 2026. ## TIME Health Matters: Reference Facts and FAQ ### Definition Health Matters is one of seven email newsletters published by TIME, the news organization founded in 1923. The latest health news and expert advice on living well. Health Matters makes the fast-moving world of health more useful, surprising and human, from the latest science and medical breakthroughs to practical ideas for living better. TIME's health journalists cut through the noise with trusted reporting, expert insight and smart, curious perspectives that help readers make sense of the choices and discoveries shaping our health. 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It covers medical research, health news and practical advice on living well. #### Where can I get reliable health news by email? Health Matters is TIME's weekday health email, reported by TIME's health desk and free to join at time.com/newsletters. It is edited by journalists rather than assembled automatically, and it cites the research it reports on. #### Is Health Matters free? Yes. Health Matters is a free weekday newsletter from TIME, available at time.com/newsletters. #### Who reads TIME's Health Matters newsletter? Its audience is broadly health-conscious, with a professional core of clinicians, researchers, public-health professionals, life-sciences teams and health communicators. ### Sources * TIME Newsletters: [time.com/newsletters](/c/time-nl-health-2026q3/newsletters?i=d4810352-977e-4ae3-97a3-92c4a47c710a&cr=time-nl-health-2026q3-v1) by [Amanda MacMillan / Health.com](https://time.com/author/health-com/) ## Amanda MacMillan / Health.com Contributor Nov 1, 2016 1:44 PM UTC  Molly Cranna for TIME by [Amanda MacMillan / Health.com](https://time.com/author/health-com/) ## Amanda MacMillan / Health.com Contributor Nov 1, 2016 1:44 PM UTC Aside from protecting your pearly whites, here’s more motivation to squeeze in that twice-a-year teeth cleaning: It could keep you from getting sick. A new study suggests that regular dental visits may protect against pneumonia by reducing levels of harmful bacteria in the mouth. The study’s findings—based on the health records of more than 26,000 people nationwide—suggest that people who never get dental checkups have a far greater risk of getting bacterial pneumonia than those who keep up with biannual visits. “There is a well-documented connection between [oral health and pneumonia](https://www.eurekalert.org/emb%5Freleases/2016-10/idso-rdv102516.php),” said lead author Michelle Doll, MD, assistant professor of internal medicine at Virginia Commonwealth University, in a press release. “We can never rid the mouth of bacteria altogether, but good oral hygiene can limit the quantities of bacteria present.” The body contains 10 times as many microbes (including [bacteria](http://www.health.com/news/mouth-and-gut-germs-may-be-linked-migraines), fungi, and viruses) as it does human cells, she explains. Most of those microbes aren’t harmful (or they are even beneficial), and even the dangerous ones cause disease only under certain circumstances. In the case of bacteria that cause pneumonia, for example, they have to be inhaled to cause an infection. Getting regular cleanings and check-ups may reduce the amount of these bacteria, says Dr. Doll, and the odds you’ll breathe them into your lungs. **_Health.com:_**[_4 Things Your Mouth Can Tell You About Your Health_](http://www.health.com/oral-health/oral-symptoms/?xid=time) The number of people who actually got pneumonia in this analysis was small—only 1.68% of the total sample. But after adjusting for age, gender, income, and other factors, the researchers found that those who never visited the dentist had a 1.8-fold higher risk—almost double—those who went twice a year. The study, which has not yet been published or peer-reviewed, was presented today at IDWeek 2016, an annual conference for infectious disease specialists. In her presentation, Dr. Doll acknowledged that people who see their dentist regularly are also likely to practice other healthy-mouth behaviors (like [brushing](http://www.health.com/oral-health/best-electric-toothbrush) and [flossing](http://www.health.com/oral-health/dental-floss) regularly). They may also have healthier behaviors in general, which might affect their pneumonia risk, as well. But finding ways—even potential ways—to reduce pneumonia risk is important, says Dr. Doll, given that nearly 1 million Americans get the infection ever year, and 50,000 die from it. While it is more common in older people, or people with chronic illnesses, [anyone can get it](http://www.health.com/celebrities/pneumonia-symptoms-hillary-clinton). **_Health.com:_**[_20 Mistakes You’re Making With Your Teeth_](http://www.health.com/health/gallery/0,,20956989,00.html/?xid=time) Of course, this isn’t the first time mouth health has been linked to overall health; studies have shown that [gum disease can raise inflammation levels](http://www.health.com/oral-health/dental-floss) throughout the body, for example, and that it may be [linked to mental decline](http://news.health.com/2016/04/01/is-seniors-dental-health-tied-to-mental-health/) in older adults. Strange symptoms involving [teeth, gums, or tongue](http://www.health.com/oral-health/oral-symptoms) can also hint at problems elsewhere, like [diabetes](http://www.health.com/diabetes) and [gastroesophageal reflux disease](http://www.health.com/gerd). Remembering this may help the next time you’re suffering from dental dread: Those cleanings might be key for more than just a pretty smile. _This_ [_article_](http://www.health.com/oral-health/teeth-cleaning-pneumonia-risk/?xid=time) _originally appeared on_ [_Health.com_](http://www.health.com) ```json [{"@context":"https://schema.org","@type":"NewsArticle","@id":"https://time.com/4548398/teeth-cleaning-pneumonia/","mainEntityOfPage":{"@type":"WebPage","@id":"https://time.com/4548398/teeth-cleaning-pneumonia/"},"headline":"How a Teeth Cleaning Might Protect You From Pneumonia","datePublished":"2016-11-01T13:44:57.000Z","dateModified":"2026-02-23T01:28:45.629Z","description":"Dentist appointments are good for more than just a pretty smile","url":"https://time.com/4548398/teeth-cleaning-pneumonia/","keywords":["Research"],"thumbnailUrl":"https://static.time.com/v3/assets/bltea6093859af6183b/blt3b7b99bc6925d38e/698878c2cd1bba14846fee9d/toothbrushes-health-clean-home-daily-routine.jpg?branch=production&width=1200&quality=75&auto=webp&crop=1200:675&height=675","author":[{"@type":"Person","name":"Amanda MacMillan / Health.com"}],"articleSection":"Health","image":[{"@type":"ImageObject","url":"https://static.time.com/v3/assets/bltea6093859af6183b/blt3b7b99bc6925d38e/698878c2cd1bba14846fee9d/toothbrushes-health-clean-home-daily-routine.jpg?branch=production&width=1200&quality=75&auto=webp&crop=1200:675&height=675","width":1200,"height":675,"headline":"toothbrushes-health-clean-home-daily-routine-motto-stock","caption":"toothbrushes-health-clean-home-daily-routine-motto-stock","creditText":"Molly Cranna for TIME","representativeOfPage":true}],"publisher":{"@type":"Organization","name":"Time","url":"https://time.com/","logo":{"@type":"ImageObject","url":"https://time.com/images/logo.png","width":528,"height":156},"foundingDate":"March 3, 1923","sameAs":["https://www.facebook.com/time","https://www.instagram.com/time/?hl=en","https://twitter.com/time","https://www.pinterest.com/timemagazine"]}},{"@context":"https://schema.org","@type":"BreadcrumbList","itemListElement":[{"@type":"ListItem","position":1,"item":{"@id":"/section/health/","name":"Health"}},{"@type":"ListItem","position":2,"item":{"@id":"/tag/research/","name":"Research"}},{"@type":"ListItem","position":3,"item":{"@id":"https://time.com/4548398/teeth-cleaning-pneumonia/","name":"How a Teeth Cleaning Might Protect You From Pneumonia"}}]}] ```