Purpose: Encouraging results have been reported for ultrashort single implants; however, long-term investigations are warranted for full-arch reconstructions. This study evaluated marginal bone loss, implant, and reconstruction survival of fiber-reinforced composite full-arch prostheses supported by 4 ultrashort implants.
Methods: Patients with severely atrophic mandibles (Cawood and Howell class V and class VI) were included in this cohort study.