In real life, especially in interpersonal communication, if your smile is not natural enough and your teeth are not white enough, then you will not be able to leave a good impression on others. Therefore, many people with black teeth want to know what is the reason for their black teeth. a thing? In order for you to understand this aspect more clearly, take a look at the following content answers.
1. Plaque enamel teeth: Also known as dental fluorosis, it is caused by excessive fluoride concentration in drinking water. When the fluoride concentration exceeds one part per million, it will affect the calcification process of the tooth germ, and the tooth surface will become yellow, uneven, and point or strip-shaped concave defects will appear. Plaque enamel often occurs when teeth develop calcification before the age of 5.
2, Tetracycline teeth: caused by the frequent use of tetracycline in childhood. It combines with calcium in the body to form a yellow complex of calcium tetracycline, which is deposited on the crown of the tooth.
3. Smoking: The yellow substance in tobacco adheres to the teeth.
