Study of alterations in the Class II division 1 malocclusion in young individuals treated with occipital headgear (IHG)

Rafael Pinelli HENRIQUES, José Fernando Castanha HENRIQUES, Renato Rodrigues de ALMEIDA, Marcos Roberto de FREITAS, Guilherme JANSON

Aim: This study conducted a cephalometric evaluation in young individuals with Class II division 1 malocclusion treated with IHG (Interlandi headgear). Material and methods: A total of 100 lateral cephalograms of 50 young individuals were analyzed, which were divided into two groups with 25 individuals each. The individuals in the experimental group, with an average age of 10.51 years at the beginning of treatment, was followed for 1.32 years. The subjects in the other group were kept as controls, with an average age of 10.06 years at the beginning of treatment and followed for a period of 1.35 years. Results: The interception of the Class II division 1 malocclusion in the study group was significant. The anterior maxillary displacement was significantly restricted in the study group compared to the control one. The maxillomandibular relationship was significantly improved, distal movement of the maxillary molars was significant and the upper lip presented a statistically significant retrusion as compared to the treated group. Conclusion: This treatment protocol provided relevant clinical alternations for correction of the Class II division 1 malocclusion.

Keywords: Class II, division 1. IHG (Interlandi headgear). Cephalometric. Malocclusion. Orthodontics.

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