When a child loses a tooth too early due to decay, injury, or extraction, the adjacent teeth may drift into the empty space. This can block the path for the permanent tooth to emerge properly, leading to orthodontic problems later. To prevent this, a dentist may recommend a space maintainer. These devices can be fixed or removable, depending on the child’s age and dental condition. Fixed space maintainers are usually cemented to the teeth for stability, while removable ones function like retainers and are easier to clean. The dentist regularly monitors the child’s oral development, adjusting or removing the appliance when the permanent tooth begins to erupt.