Stay Hydrated
Saliva plays a significant role in oral health, and drinking water can promote saliva production and keep your mouth moist. Without enough saliva, your mouth is less efficient in removing plaque and bacteria, resulting in increased chances of tooth decay and gum disease.
Many researchers have proven that drinking fluoridated water can strengthen teeth and prevent cavities. The U.S. Public Health Service suggests that having 0.7 to 1.2 milligrams per liter (mg/L) of fluoride concentrations in drinking water can achieve the best preventing effect.
In addition, drinking water can wash away food residue and clean your mouth. Cavity-causing bacteria rely on these food leftovers to grow. Therefore, it suppresses the reproduction of cavity-causing bacteria when people stay hydrated by drinking plenty of water. [6]
