White stuff on teeth may be soft tartar, calculus, chalky white spots, enamel hypoplasia and so on. 1. Dental tartar and calculus: Inadequate oral hygiene can lead to the formation of white soft tartar attached to the teeth by food debris and oral bacteria, and long-term deposition will develop into calculus. 2. Chalky white plaque: when there is food residue on the teeth, it can be decomposed by oral bacteria to form acid, and white plaque appears on the surface of the teeth, which is commonly found in people who like to drink carbonated beverages and eat sweets, or people with poor oral hygiene. 3. Enamel hypoplasia: This disease can cause white streaks on the surface of several teeth, sometimes also manifested as yellowish-white spots or plaques. White stuff on teeth may also be related to other reasons, it is recommended to consult a doctor in time to clarify the cause and standardize the treatment. In addition, special attention should be paid to oral hygiene in general, brushing teeth and rinsing the mouth diligently.