Treatment of Class II malocclusion with metallic bite plane associated to miniscrew-supported hybrid expander

Marcelo Keiji SUZUKI, Cristiane Barros ANDRÉ, José RINO NETO

Introduction: Mandibular deficiency is present in more than 70% of cases of Class II maloc- clusion and in some cases it is associated to transverse maxillary deficiency that demands both appliances for mandibular advancement and maxillary expansion. Description: This case report aims to describe the treatment of a male patient aged 11 years 7 months, with the dental characteristics aforementioned and pos-pubertal spurt stage, who was treated with an inclined bite plane of acrylic resin covered with a metal track, promoting mandibular advancement, associated with a Hyrax expander supported by mini-implants along the palatal raphe, expanding the suture in a parallel manner. In a few months, the Class II relation was corrected by dental alterations of incisors inclination, leveling the curve of Spee and increasing the upper intermolar distance. Conclusion: The hybrid appliance was efficient in sagittal, vertical and transverse correction, posing as a new approach for early intervention of Class II malocclusion.

Keywords: Malocclusion, Angle Class II. Orthodontic anchorage procedures. Palatal expansion technique. Mandibular advancement. Orthodontic appliance design.

How to cite: Suzuki MK, André CB, Rino Neto J. Treatment of Class II malocclusion with metallic bite plane associated to miniscrew-supported hybrid expander. Clin Orthod. 2020 Dez-2021 Jan;19(6):113-25.

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