It is best not to brush your teeth with cold water

Oral experts caution against brushing your teeth with cold water, as this may cause discomfort or sensitivity in some people. Cold water constricts the blood vessels in your gums, causing a temporary tightening sensation that makes brushing uncomfortable. Additionally, cold water may not remove plaque and debris from your teeth as effectively as using warm or room temperature water.

Brushing your teeth with cold water can also exacerbate tooth sensitivity, especially in people who are already sensitive to cold temperatures. Sudden changes in temperature may trigger tooth pain or discomfort, especially if the enamel is worn or there is exposed dentin.

Cold water may not be effective in loosening food particles and plaque from your teeth and gums. Warm water, on the other hand, can help soften plaque and make it easier to remove when brushing. It is generally recommended to use warm or room temperature water when brushing your teeth. This temperature is more comfortable for most people and can effectively remove plaque without causing sensitivity or discomfort.