When the pit and fissure on the tooth surface is closed, the original nutrient source of bacteria in the pit and fissure is excluded, which plays a role in preventing dental caries on the one hand, and can also prevent the development of existing early caries on the other hand, so it is used for treatment before the early caries become cavities. It can effectively prevent the occurrence and development of dental caries with high quality.
(1) The best time for pit and fissure sealing is when the teeth completely erupt until the caries have not occurred.
(2) Pit and fissure sealing refers not only to children, but also to adults.
(3) When the deciduous molars are 3-4 years old.
(4) The first permanent molar is 6-7 years old. Second permanent molar 1 1 ~ 13 years old.
(5) The second permanent molar 1 1 ~ 13 years old.
(6) The sealant for children aged 5-7 years is easy to fall off, and it should be rechecked once every six months to one year. After falling off, it will be sealed again, and it will not fall off for about three years.
(7) Permanent teeth are usually closed once every two years, and then closed again after falling off. After 5 ~ 10 years, it will basically not fall off.