Abstract
BackgroundTo compare dentoskeletal changes produced by the maxillary splint headgear and cervical headgear appliance during the early phase of Class II treatment, specially the initial overjet and upper incisors position.Subjects and methodsIn this retrospective study, 28 Class II patients treated with the maxillary splint headgear (MSG, mean age 10.1 ± 1.9 years) and 28 Class II patients treated with cervical headgear (CHG, mean age 9.5 ± 1.9 years) were evaluated before and after treatment. Statistical comparisons between the two groups for cephalometric measurements at T1 and for T2-T1 changes were performed by means of independent sample t tests.ResultsThe MSG showed a significantly greater reduction of the overjet in comparison to the CHG (− 2.4 mm and − 0.7 mm, respectively) and a significantly greater maxillary incisor uprighting (− 1.8 mm and 0.4 mm, respectively). In the MSG, overjet correction was due mainly to mandibular advancement (3.5 mm), while the correction of molar relationship (3.9 mm) was 64% skeletal and 36% dentoalveolar. In the CHG, the overjet correction was also more skeletal, due to mandibular growth (1.8 mm), while correction of molar relationship (3.5 mm) was 63% dentoalveolar and 37% skeletal.ConclusionsBoth groups showed favorable skeletal mandibular changes, which was more significant in the MSG. Regarding tooth movement, the maxillary splint headgear was more effective in uprighting upper incisors and reducing the overjet than cervical headgear appliance.
Highlights
Treatment of Class II consists of two phases of treatment, with the objective of improving patient’s growth pattern and preventing risks associated with this malocclusion [1]
Both groups showed favorable skeletal mandibular changes, which was more significant in the maxillary splint headgear group (MSG)
The maxillary splint headgear was more effective in uprighting upper incisors and reducing the overjet than cervical headgear appliance
Summary
Treatment of Class II consists of two phases of treatment, with the objective of improving patient’s growth pattern and preventing risks associated with this malocclusion [1]. Miguel et al Progress in Orthodontics (2020) 21:11 performed a meta-analysis and observed that the proportion of dental trauma on permanent teeth in people with an overjet of 3 to 4 mm and 5 to 7 mm that are attributable to these overjets is 21.8% and 10.2%, respectively. Another reason for early treatment of Class II is the possibility of bullying among children, since teeth are the characteristic most frequently targeted for bullying, and proclined upper incisors are one of the three most commonly reported dentofacial features targeted by bullies [8]. To compare dentoskeletal changes produced by the maxillary splint headgear and cervical headgear appliance during the early phase of Class II treatment, specially the initial overjet and upper incisors position
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