When primary teeth are lost too soon, it can impact the development of adult teeth. The baby teeth either side of the gap may move into this space, preventing the permanent tooth from erupting correctly. Children who lose primary teeth to soon may need a space maintainer to hold open the correct amount of room for adult teeth and to prevent adjacent teeth from moving.As soon as your child has teeth, they are susceptible to decay and especially to a problem called early childhood tooth decay or early childhood caries.