Objective treatment outcome assessment of a completely customized lingual appliance: A retrospective study

Autor: Rainer Schwestka-Polly, Fawzi M. AlQatami, Michael Knösel, Ons Alouini, Hans-Joachim Helms
Rok vydání: 2021
Předmět:
Zdroj: International orthodontics. 19(3)
ISSN: 1879-680X
Popis: OBJECTIVE To assess the outcome quality of subjects treated with a completely customized lingual appliance (CCLA) in a postgraduate university program, using the ABO Objective Grading System (OGS), by testing the null-hypothesis of a significant proportion of post-treatment cases exceeding an adjusted 'exam failure' threshold value of OGS=24. MATERIALS AND METHODS This retrospective single-arm study included 66 consecutively debonded CCLA cases (m/f 19/47; mean age: 25.1±9 years) treated at Hannover Medical School (MHH, Hannover, Germany). The discrepancy index (DI) was assessed on initial plaster casts. The OGS of the cast-radiograph evaluation was scored for both set-up and post-treatment casts, including the seven components of alignment/rotation, marginal ridges, buccolingual inclination, overjet, occlusal contacts, occlusal relationships and interproximal contacts, to parameterize differences between those. RESULTS DI score distribution (≥20
Databáze: OpenAIRE