From Fragile Enamel to Functional Harmony: A Case Report of the Twin-Stage Approach to Amelogenesis Imperfecta

Amelogenesis imperfecta (AI) is a hereditary enamel defect that leads to compromised esthetics, tooth sensitivity, and functional impairment. The case report describes the rehabilitation of a 24-year-old male patient diagnosed with hypoplastic AI associated with reduced vertical dimension of occlusion (VDO). A systematic treatment approach was adopted, including diagnostic evaluation, occlusal splint therapy to assess adaptability to increased VDO, and definitive prosthetic rehabilitation using the Hobo twin-stage technique. The VDO was increased by 2 mm to restore functional harmony and provide adequate restorative space. Porcelain-fused-to-metal restorations were fabricated following controlled occlusal principles with canine-guided occlusion. Post-treatment evaluation demonstrated significant improvement in mastication, esthetics, and patient comfort. The Hobo twin-stage technique proved to be a predictable and efficient method for achieving stable occlusion without complex mandibular recordings.