Because early childhood caries invade infants,the ages of patients are very early, and affects multi-toothsurface, it is difficult to treat and very important to prevent early childhood caries.

• 婴幼儿龋发病年龄低,可以波及多个乳牙引起广泛龋损,不仅严重的影响了患儿的健康,并且给治疗带来很大难度。