Custom fabricated subperiosteal implants for sectional rehabilitation of severely atrophic maxillae: a technical note

Severe atrophy in isolated posterior maxillary sectors poses challenges for dental rehabilitation, especially in partially dentate patients where traditional graftless techniques are unsuitable. This study retrospectively analyzed the outcomes of sectional rehabilitation in 16 consecutive patients with Cawood and Howell class V to VI atrophy treated with 21 custom fabricated subperiosteal implants. Patients were followed for a median of 36 months (interquartile range: 24 to 48). Implant survival and success rates at 1 and 5 years were 95.2%, with minimal complications. Radiological assessments showed no significant bone resorption beneath abutments (mean: 0.18 mm at 1 year). Soft tissue health improved over time, with bleeding on probing affecting 10% of abutments at 6 months and only 2.5% at 4 years. These findings suggest that subperiosteal implants offer a viable graftless solution for sectional rehabilitation in partially dentate patients, combining high survival rates with favorable radiological and soft tissue outcomes. Further studies are needed to confirm long-term effectiveness.