Does It Matter if I Brush My Teeth With Cold or Warm Water?

Do you ever take into account what temperature your water is that you use to brush your teeth? Do you use cold water? Hot water? Any water?
Afro Woman Brushing Teeth In Bathroom, Panorama

Do you have no preference at all? If you are now thinking about what kind of water you should brush your teeth with, it’s important to know that we also use hot or cold water for different purposes outside of cleaning. Many dentists claim that there is no preference to water temperature when brushing your teeth, but there are definitely some differences with using warm and cool water in general.

Effects of Warm Water on the Teeth

Warm water, for instance, is known to aid in digestion, improve blood circulation, and loosen up fats. The hotter the water, you more effective water is when washing hands, washing clothes, and cleaning dishes. That is why you are often advised to wash hands with warm water. We often do not brush with water that is hot enough, however. 

For one, that water does not stay in our mouth long enough to bare any results on our teeth. You can try to keep warm water in your mouth, but it will tend to cool after a few seconds. You can try brushing with very hot water, but you might risk burning your mouth as a result. Very hot water can also potentially damage your brush’s bristles in the long run.

Toothpaste also contains soap, which is meant to dissolve fat, anyway, so it is uncertain if using warm or hot water for brushing your teeth would make a difference, if any.

But warm water is not all that insignificant when brushing. If you tend to have sensitive teeth, warm water will be more tolerable to them. Cold water can really cause dentine sensitivity. In other words, the water will trigger the nerves in your teeth and cause them to hurt, so they will take warmer water more-kindly.

Effects of Cold Water on the Teeth

If your Spruce Grove dentist doesn’t tell you that there is no preference in water temperature when brushing teeth, then they would say that cold water will be better than warm water. The primary reason for this is that cold water gives you and your mouth a refreshing and invigorating sensation.

Drinking cold water is meant to be energizing, but considering we do not consume this water at all, this hardly makes a difference when brushing our teeth with it.

Should I Rinse With Water After Brushing My Teeth?

What may be surprising to many, water is the least necessary component to brushing teeth, and it actually might be a detriment than a benefit. Using water to rinse can tamper with the effects of toothpaste with fluoride. It is important for fluoride to remain on your teeth for as long as possible, as it continues to work to limit bacteria on the teeth’s surface, even long after you brush. So, if you rinse your mouth out with water following brushing your teeth, you might want to reconsider doing so. Although that isn’t to say that you should do away with water entirely. Water does give teeth benefits, regardless of whether it is hot or cold.

Water Contains Fluoride

Water in North America is known for containing fluoride that works to fight bacteria. Not only are you encouraged to use water along with toothpaste to brush your teeth, but you are also recommended to drink glasses of water throughout the day so that your teeth continue to get plenty of exposure to fluoride.

Water Freshens the Breath

Water is capable of washing away food particles so that bacteria doesn’t develop inside your mouth. This means using water, no matter if it’s to rinse with or drink, can be helpful to keep your mouth feeling clean. If you rinse your mouth with water, we advise you to do so at a time when you aren’t brushing your teeth beforehand.

Water Keeps Your Mouth Hydrated

Water, of course, is moist, so drinking it will help prevent your mouth from getting dry and you getting sensations of thirst. When your mouth is dry, it isn’t capable of producing much saliva, which you need in order to wash away bacteria. So long as you drink water, you’ll create enough saliva in your mouth to limit how much bacteria you have in there.


Some dentists prefer warm water to prevent tooth sensitivity. Some prefer cold water as it feels refreshing. Others will say there is no real difference when you are brushing your teeth. Regardless of what kind of water you prefer, be sure you drink plenty throughout the day, but try to not use as much when you are brushing your teeth, as it can limit the performance of your toothpaste.

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