N Bock1, J Ruehl2, S Ruf2. 1. Department of Orthodontics, University of Giessen, Schlangenzahl 14, 35392, Giessen, Germany. niko.c.bock@dentist.med.uni-giessen.de. 2. Department of Orthodontics, University of Giessen, Schlangenzahl 14, 35392, Giessen, Germany.
Abstract
OBJECTIVES: The aim of this retrospective investigation was to assess the efficiency and outcome quality of Class II:1 treatment (Tx). MATERIAL AND METHODS: The investigation is based on the evaluation of all Class II:1 patients that ever (1986-2014) started Tx with a Herbst appliance and subsequently a multibracket appliance (MBA) at the study center. Study casts from before Tx, after Herbst-MBA Tx, and (if available) after ≥ 24 months of retention were evaluated using the Peer Assessment Rating (PAR) index, the Ahlgren scale, and standard occlusal variables. RESULTS: In total, 526 Class II:1 patients with a mean pre-Tx age of 14.4 years (range 9.8-44.4) had received Herbst-MBA Tx; 18 patients discontinued Tx before completion. For 240 patients, data from ≥ 24 months of retention were available. The pre-Tx PAR score of 32.4 ± 8.83 was reduced to 8.0 ± 4.51 during Tx. A slight increase to 8.8 ± 5.11 occurred during retention. The percentage of patients which could be assigned to the category "greatly improved" was 62% after Tx and 57% after retention; only 2-3% had to be assigned to the category "worse/no different." The outcome ratings according to the Ahlgren scale revealed 17% excellent, 35% good, 45% satisfactory, and 3% unsuccessful results. CONCLUSIONS: Class II:1 Tx using Herbst-MBA is an efficient approach in orthodontic care. During a mean active Tx period of 2 years, high-quality results can be obtained in the majority of patients. CLINICAL RELEVANCE: The present investigation is the first to investigate a large unselected cohort of consecutive Herbst-MBA patients to determine representative data on the efficiency and the outcome quality of this Tx approach.
OBJECTIVES: The aim of this retrospective investigation was to assess the efficiency and outcome quality of Class II:1 treatment (Tx). MATERIAL AND METHODS: The investigation is based on the evaluation of all Class II:1 patients that ever (1986-2014) started Tx with a Herbst appliance and subsequently a multibracket appliance (MBA) at the study center. Study casts from before Tx, after Herbst-MBA Tx, and (if available) after ≥ 24 months of retention were evaluated using the Peer Assessment Rating (PAR) index, the Ahlgren scale, and standard occlusal variables. RESULTS: In total, 526 Class II:1 patients with a mean pre-Tx age of 14.4 years (range 9.8-44.4) had received Herbst-MBA Tx; 18 patients discontinued Tx before completion. For 240 patients, data from ≥ 24 months of retention were available. The pre-Tx PAR score of 32.4 ± 8.83 was reduced to 8.0 ± 4.51 during Tx. A slight increase to 8.8 ± 5.11 occurred during retention. The percentage of patients which could be assigned to the category "greatly improved" was 62% after Tx and 57% after retention; only 2-3% had to be assigned to the category "worse/no different." The outcome ratings according to the Ahlgren scale revealed 17% excellent, 35% good, 45% satisfactory, and 3% unsuccessful results. CONCLUSIONS: Class II:1 Tx using Herbst-MBA is an efficient approach in orthodontic care. During a mean active Tx period of 2 years, high-quality results can be obtained in the majority of patients. CLINICAL RELEVANCE: The present investigation is the first to investigate a large unselected cohort of consecutive Herbst-MBA patients to determine representative data on the efficiency and the outcome quality of this Tx approach.
Authors: Paloma González-Gil de Bernabé; José María Montiel-Company; Vanessa Paredes-Gallardo; Jose Luis Gandía-Franco; Carlos Bellot-Arcís Journal: Angle Orthod Date: 2016-09-06 Impact factor: 2.079
Authors: I Graf; N C Bock; T Bartzela; V Röper; U Schumann; K Reck; H Christ; K Höfer; U Fritz; D Wiechmann; P-G Jost-Brinkmann; M Wolf; S Ruf; B Braumann Journal: J Orofac Orthop Date: 2021-06-17 Impact factor: 2.341