title: Treatment of unilateral posterior crossbite with quad-helix and removable plates. A retrospective study.
mesh_terms: D000293:Adolescent; D002648:Child; D003362:Cost-Benefit Analysis; D004867:Equipment Design; D005260:Female; D006801:Humans; D008297:Male; D008310:Malocclusion / Q000628:therapy*; D009967:Orthodontic Appliances / Q000009:adverse effects / Q000191:economics; D009968:Orthodontic Appliances, Removable / Q000009:adverse effects / Q000191:economics; D010155:Palatal Expansion Technique / Q000009:adverse effects / Q000191:economics / Q000295:instrumentation*; D012189:Retrospective Studies