Early mixed dentition treatment: postretention evaluation of stability and relapse.
Twenty-five patients who underwent early mixed dentition treatment were evaluated during the following stages: pretreatment (early mixed dentition), phase 2 (early permanent dentition), and postretention (average of 9.5 years). All patients were treated with a removable passive lingual arch. The mandibular incisors were judged to have satisfactory alignment at phase 2 evaluation and had no further orthodontic treatment. Nineteen of 25 cases (76%) demonstrated clinically satisfactory mandibular alignment postretention. Intercanine width decreased in 72% of the cases postretention and arch length decreased in 100% postretention. Intermolar width increased in 18 of 25 (72%) of the cases during treatment and remained stable in 17 of 25 (68%) of the cases. No predictors or associations could be found to help clinicians in determining the long-term prognosis of dental stability.
University of the Pacific, School of Dentistry, Department of Orthodontics, San Francisco, Calif., USA.
S A
SA
Dugoni
J S
JS
Lee
J
J
Varela
A A
AA
Dugoni
D000293:Adolescent; D000328:Adult; D002648:Child; D003481:Cuspid / Q000473:pathology; D003724:Dental Arch / Q000473:pathology; D003818:Dentition, Mixed; D005069:Evaluation Studies as Topic; D005260:Female; D005500:Follow-Up Studies; D005544:Forecasting; D006801:Humans; D007180:Incisor / Q000473:pathology; D008297:Male; D008310:Malocclusion / Q000473:pathology / Q000628:therapy*; D008334:Mandible / Q000473:pathology; D008963:Molar / Q000473:pathology; D009968:Orthodontic Appliances, Removable; D018704:Orthodontic Retainers; D009969:Orthodontic Wires; D009972:Orthodontics, Interceptive; D011379:Prognosis; D012008:Recurrence