A lot of people know tetracycline teeth, also know that tetracycline teeth bring us very great harm, but there are still a lot of people on tetracycline teeth some knowledge is not very understand, tetracycline teeth will be hereditary this problem have questions, now come to give you an introduction. The formation of tetracycline teeth is caused by taking too much tetracycline drugs later in life, the human body in the absorption of drugs at the same time, due to the teeth are also developing, but also absorbed the pigment therein, after a long time, the formation of a thin film-like yellow layer around the teeth. Thus, tetracycline teeth are formed. The principle here is that tetracycline teeth are not hereditary from a genetic point of view. Some children have yellowish teeth, and it is believed that tetracycline is hereditary. Some children have yellow teeth because they took tetracycline drugs during pregnancy, or took too much tetracycline drugs during infancy or mother’s pregnancy and lactation, which caused yellowing of the teeth. This is not caused by heredity, so tetracycline teeth are not hereditary. Children are advised not to take tetracycline medications until they are 8 years old. As long as we know that the cause of tetracycline teeth is due to the use of tetracycline medication, the question of whether tetracycline teeth are contagious will naturally be solved: tetracycline teeth are neither hereditary nor contagious.