Children’s primary (baby) teeth play a key role in dental development. They are important as they not only hold space for permanent teeth, but they are essential for chewing, biting, speaking and appearance. In addition, they guide the permanent teeth into place.
Since primary teeth guide the permanent teeth into place, young children with missing primary teeth or who prematurely lose primary teeth may require a space maintainer, a device used to hold the natural space open. Without a maintainer, the teeth can tilt toward the empty space and cause permanent teeth to come in crooked.

After all, the conservation of deciduous teeth is also fundamental for a correct chewing as well as in the development of speech and psychosocial involvement of the child with others.