A Space Maintainer is a custom-made dental device used primarily in children to preserve the space left by a prematurely lost baby tooth. When a primary tooth is lost too early, the surrounding teeth can shift into the empty space, potentially leading to misalignment and crowding of permanent teeth. Space maintainers help prevent this by holding the space open until the permanent tooth erupts in its proper position. These devices can be fixed or removable and are carefully designed to suit each child’s needs. Timely use of space maintainers supports proper dental development and can reduce the need for extensive orthodontic treatment in the future.