White spots on teeth may be related to enamel underdevelopment or dental fluorosis, decalcification of tooth enamel, etc. 1. Enamel hypoplasia: Most of the development of tooth enamel is completed during the mother’s pregnancy. During the period of tooth calcification, if the mother is deficient in vitamins or trace elements, especially calcium, it will lead to poor enamel mineralization and white patches on the teeth. 2. Dental fluorosis: Dental fluorosis and white patches can occur when there is a history of living in high-fluoride areas such as coal-rich areas, or when there is excessive fluoride in the water or diet. 3. Decalcification of enamel: Enamel is the hardest tissue in the tooth and is composed of organic matter and calcium. If the enamel is repeatedly soaked with acid, the acid will remove calcium ions from the enamel and form soft organic material, and white spots will appear. When white spots appear on the teeth, it is recommended to seek medical attention, follow the doctor’s instructions for further examination, clarify the cause with the doctor’s help, and carry out targeted treatment or therapy.