White calcification of teeth may be the manifestation of early caries, or enamel underdevelopment and other reasons. 1. Early caries: related to the usual lack of attention to oral hygiene, patients usually do not brush their teeth carefully, resulting in food residues and thus corrosion of teeth, enamel mineral loss, showing the phenomenon of calcification of teeth. 2. Enamel hypoplasia: it is a disease of abnormal tooth structure, mainly due to virus infection during mother’s pregnancy, high fever in infancy, malnutrition, vitamin deficiency, and periapical infection of milk teeth. Therefore, patients with white calcified teeth should go to the hospital stomatology department in time for examination, or do the corresponding treatment.