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Evaluation of the Co–Go–Me angle as a predictor in Class II patients treated with Herbst appliance and skeletal anchorage: a retrospective cohort study
- Source :
- Frontiers in Oral Health, Vol 5 (2024)
- Publication Year :
- 2024
- Publisher :
- Frontiers Media S.A., 2024.
-
Abstract
- IntroductionA condylion–gonion–menton (Co–Go–Me) angle threshold of 125.5° has been introduced as a predictive parameter of cephalometric mandibular response in the orthopedic treatment of growing Class II patients with functional appliances, despite some contradictions in the literature. Considering the lack of studies evaluating the role of skeletal anchorage, this study aims to reassess the threshold of 125.5° in the Co–Go–Me angle as a useful predictor in growing skeletal Class II patients treated with acrylic splint Herbst appliance and two mini-screws in the lower arch (STM2).MethodsThirty-five consecutively treated patients (20 males, 15 females; mean age, 11.37 years) with mandibular retrusion were classified into two groups according to their Co–Go–Me baseline values (Group 1, 125.5°). The STM2 protocol involved the use of the MTH Herbst appliance with an acrylic splint in the lower arch and two interradicular mini-screws as anchorage reinforcement. Cephalometric analysis was performed by the same operator for each patient at baseline (T0) and at the end of the Herbst phase (T1). The effects of time and group on the variables were assessed by a repeated-measures analysis of variance. The primary research outcome was the difference between the groups in terms of mandibular responsiveness to treatment referred to as the relative difference (T1−T0) in Co_Gn.ResultsThe mean duration of the treatment was 9.5 months. No statistically significant differences between groups were detected at baseline, except from the expected SN/GoMe° (p
- Subjects :
- Class II
Herbst appliance
skeletal anchorage
gonial angle
TADs
Dentistry
RK1-715
Subjects
Details
- Language :
- English
- ISSN :
- 26734842 and 70990018
- Volume :
- 5
- Database :
- Directory of Open Access Journals
- Journal :
- Frontiers in Oral Health
- Publication Type :
- Academic Journal
- Accession number :
- edsdoj.89e8778fe1ab4f70990018471cc8042f
- Document Type :
- article
- Full Text :
- https://doi.org/10.3389/froh.2024.1389628