Orlando Motohiro TanakaOscar Mario AnteloThiago Martins MeiraA G Diego IturraldeLara Guimarães2026-03-222026-03-22201810.5005/jp-journals-10015-1541https://doi.org/10.5005/jp-journals-10015-1541https://andeanlibrary.org/handle/123456789/66838Introduction: Mandibular retrognathism is the most common feature in class II malocclusions. Functional appliance therapy focuses on reducing the increased overjet and overbite, establishing better conditions for mandible growth response in phase I. Phase II corrects the position of the teeth and gives an adequate stable occlusal relationship.enDivision (mathematics)OrthodonticsMalocclusionMathematicsDentistryMedicineClass II, Division 1 Malocclusion treated with the Andresen Appliance followed by Fixed Orthodonticsarticle