Patient satisfaction and survival of maxillary overdentures supported by four or six splinted implants: a systematic review with meta-analysis.
Fabrizio Di FrancescoGennaro De MarcoEstefani B CapchaAlessandro LanzaCorina M CristacheRolando VernalEmilio Alfredo CafferataPublished in: BMC oral health (2021)
Within the limits of this systematic review, we can conclude that the bar-supported overdenture on four implants is not inferior to the overdenture supported by six implants for rehabilitating the edentulous maxilla, in terms of patient satisfaction, survival rates of implants and overdentures, and prosthodontic complications.