title: Distal extension space maintenance: a new technique.
mesh_terms: D002675:Child, Preschool; D005260:Female; D006801:Humans; D008963:Molar / Q000503:physiopathology; D009967:Orthodontic Appliances; D013027:Space Maintenance, Orthodontic / Q000295:instrumentation* / Q000379:methods; D014080:Tooth Exfoliation / Q000628:therapy