Smile MonthBetween 11 May and 11 June 2026, the Oral Health Foundation will raise awareness of important oral health issues. Join the nation's biggest oral health campaign and help bring a smile to millions of people. This year is our biggest year yet as we get ready to celebrate the 50th anniversary of Smile Month, and we need your smiling faces to make it happen. Join our Smile Wall using the buttons below. See our online wall Add your smile There are lots of different activities you can take part in for Smile Month. Have a look at the full list here. Take part The Smile Wall About the campaign What is Smile Month? History of the campaign Why it matters today Who takes part 50 years of smiles The story of 50 years How smiles have changed Half a century of healthy smiles Our vision for the next 50 Why smiles matter Better oral health Confidence & wellbeing Social and life impact Everyday quality of life Who's behind it Oral Health Foundation Our sponsors Take part Activities For dental teams For schools & youth groups In workplaces For families and communities View all Downloads Logo & email signature Social media Digital guides Learning resources Facts and talking points For dental professionals (DCPs) Shop Fundraising Donate Set up your fundraising page Fundraising ideas Taking action Wall of Smiles Sign the Prevention Pledge Your oral health Daily habits Brushing basics Cleaning between teeth Why mouthwash matters Diet Diet and oral health Best tooth-friendly foods Foods and drinks to avoid The impact of sugar The role of hydration Children's teeth First teeth School years Teen habits Making brushing fun All ages Young adults Adults Older adults Changes to watch for Common mistakes Brushing too hard Rinsing with water Grazing all day Ignoring bleeding gums Oral Health Foundation Home The role of hydration in oral health Water is one of the most important factors in maintaining a healthy mouth. Staying hydrated doesn’t just keep you feeling refreshed - it plays a crucial role in protecting your teeth and gums. Drinking enough water helps prevent tooth decay, reduces bad breath, and keeps your smile strong. Why water is essential for oral health Every sip of water benefits your mouth in several key ways: Washes away food & bacteria Water helps rinse away food particles and sugars that would otherwise stick to your teeth and feed harmful bacteria. Neutralises acids Drinking water dilutes acids in your mouth, reducing the risk of enamel erosion and cavities. Prevents dry mouth Saliva is your mouth’s natural defence against decay, and staying hydrated helps you produce enough of it. A dry mouth can lead to increased plaque buildup and bad breath. Strengthens teeth (if fluoridated) In areas where tap water contains fluoride, drinking it regularly can help remineralise enamel and prevent cavities. The link between hydration and bad breath A dry mouth is one of the biggest causes of bad breath (halitosis). When your mouth lacks saliva, bacteria multiply, producing foul-smelling gases. Drinking water throughout the day helps keep your breath fresh by washing away these bacteria and keeping your mouth moist. How to stay hydrated for a healthier smile Drink water regularly Aim for at least 6–8 glasses a day to keep your mouth hydrated. Choose water over sugary or acidic drinks Water is the best choice for oral health, while fizzy drinks and fruit juices can damage teeth. Drink water after meals This helps wash away food particles and acids that could harm your enamel. Carry a water bottle If you’re on the go, having water with you makes it easier to stay hydrated. Use a humidifier at night If you suffer from dry mouth, a humidifier can help maintain moisture levels while you sleep. The bottom line Water is the simplest and most effective way to protect your teeth, prevent decay, and keep your breath fresh. By making hydration a priority, you’ll be taking an easy yet powerful step toward better oral health. Want to learn more ways to protect your smile? Check out our Best Foods for Teeth guide! Manage Cookie Preferences