Space Maintainer is an appliance which is used to preserve and maintain tooth space or regain minor amounts of space lost, so as to guide the unerupted tooth into a proper position in the arch. They're necessary when one or more primary molars have been prematurely lost due to trauma or disease. It allows the permanent teeth to erupt, or grow, into the correct alignment with proper tooth-to-tooth contact. A Space Maintainer offers a viable option if your child’s deciduous tooth is lost before the permanent tooth is ready to erupt or if a permanent tooth is missing altogether. In fact, a Space Maintainer will ensure your child’s teeth will develop correctly by keeping a space open until a permanent teeth fully develops.