Many people don’t think that primary (baby) teeth are important since they’ll just be lost. However, primary teeth serve a number of functions, including serving as the guide for permanent teeth as they develop. If kids lose their baby teeth too soon, the permanent tooth below may be unable to erupt or develop at a correct angle. In these cases, space maintainers may be necessary to keep the socket open for the developing permanent tooth. These appliances are easy to place and remove, and they utilize temporary teeth to keep the space open for permanent teeth.