The white substance on the teeth is tartar and calculus.
1. Tartar: i.e. soft tartar, mainly formed by the mixture of food debris, epithelium off the oral mucosa, mucus in saliva, bacteria, etc., is a soft white substance that can be removed by standardized brushing.
2. Dental calculus: on the basis of soft scale, plus mineral salts such as calcium salts deposited to form a hard texture, and with the teeth attached to the very tight, not easy to brush off the white material, usually need to dentists to use instruments to scrape off. Its formation is related to the lack of attention to dental cleaning or improper brushing methods, misalignment of the teeth, dental disease is afraid to chew the wasted teeth.
Therefore, when a white substance appears on the teeth, you should first ensure that your teeth are clean and hygienic, or go to a hospital dentist to be helped by a professional doctor to solve the problem.