1, pigmentation
One is pigmentation, such as tobacco stains, tea stains, coffee stains and so on. It is difficult to brush off when brushing your teeth and can be removed by washing your teeth.
2. Tooth decay
The other is that the teeth have deep or shallow caries, which are black spots from the outside, usually located in the pit and fissure. The chief culprit of dental caries is some bacteria in the mouth, but it takes time for them to destroy teeth. It usually takes 65,438+0.5 to two years from the initial discoloration to the final tooth cavity formation. In the meantime, we should pay more attention to our teeth, which may completely nip dental caries in the bud.
Once it is confirmed that the small black spots on the teeth are dental caries, they should be repaired as soon as possible to prevent the development of the lesions. If left unchecked, it will become an obvious cavity, and patients will be sensitive to food stimuli such as cold, hot, sour and sweet; When the injury further reaches the pulp, the pain will be unbearable and seriously affect daily life.
Therefore, we should pay attention to self-examination, observe the changes of tooth color, shape and texture, and go to a specialized hospital for a comprehensive oral examination regularly. If you have dental caries, you should find it early and treat it early.