title: Quad-helix treatment in general practice. A retrospective study of failures of appliance and estimation of costs.
abstract: From a Public Dental Service register of patients with malocclusion, 1688 patients were selected at random. Ninety-nine patients, 5.9 per cent, had received treatment with quad-helix appliance in General Practice and were selected for the study. From the patient's records the cost of quad-helix treatment was estimated and failure of the appliance was recorded. The mean quad-helix treatment cost was 2900 SEK (range 1298-6534). At the time of the study (1991) 10 SEK was equivalent to approximately 1 pound sterling. Fifty-nine per cent of the patients had at least one failure of the appliance, on average 2.5 number of times (range 1-11). Forty-six per cent of the patients had a minimum of one loose band.
authors.affiliation: Department of Orthodontics, Faculty of Odontology, University of Göteborg, Sweden.
authors.forename: M E
authors.initials: ME
authors.lastname: Follin
authors.forename: A
authors.initials: A
authors.lastname: Milleding
mesh_terms: D000293:Adolescent; D002648:Child; D003362:Cost-Benefit Analysis; D005069:Evaluation Studies as Topic; D005260:Female; D005792:General Practice, Dental / Q000706:statistics & numerical data; D006801:Humans; D008297:Male; D008310:Malocclusion / Q000191:economics / Q000628:therapy*; D009967:Orthodontic Appliances / Q000191:economics*; D010155:Palatal Expansion Technique / Q000191:economics / Q000295:instrumentation*; D012189:Retrospective Studies; D013548:Sweden; D017211:Treatment Failure