A 5-month-old quarter horse filly was presented for evaluation of a congenital overbite. The horse was diagnosed with a class 2 malocchtsion. A non-removable, acrylic bite plane was constructed to provide a surface for the ocdusal forces to be directed in a manner maintaining the normal anatomic position of the premaxilla. The preservation of normal anatomic relationships provided free rangc of motion of the mandible and maximized its growth potential, limiting the malocchmon. Although normal occlusion was not attained, partial incisor occlusion was present 20-months following initial treatment. Regular occlusal equilibration is mandatory to optimize occlusion and minimize future complications associated with malocdusion.
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