In orthodontic treatment, the extraction space is used to release the crowded or inwardly protruding teeth, and after the orthodontic treatment is over, the doctor will close the extraction gap completely, leaving no gap after the orthodontic treatment, and the dentures certainly do not need to be set. As long as you receive the correct treatment from a professional orthodontist and follow medical advice, your teeth will not become weak after orthodontic treatment, and the roots of your teeth will generally not show pathological resorption, and you will not fall out easily in old age, not to mention other undesirable sequelae.