title: Residual extraction sites after orthodontic treatment. Part II. At the end of retention.
mesh_terms: D003970:Diastema / Q000209:etiology / Q000628:therapy*; D006801:Humans; D008137:Longitudinal Studies; D008310:Malocclusion / Q000628:therapy*; D009967:Orthodontic Appliances; D012690:Serial Extraction / Q000009:adverse effects; D013997:Time Factors; D014087:Tooth Movement Techniques