Current trend for maxillary implant overdenture

The purpose of this review was to provide the current research trend for the maxillary implant overdenture, and to provide an update of recent research focused on the numbers of implants and attachment types. A literature search was conducted on the maxillary overdenture research which was published during 2020. We excluded studies that contained tooth-supported overdenture and denture fabrication, or designed a case report or pilot study. After screening the title, abstract, and full-text, sixteen studies were included for this review. Although many studies were tried to reduce the numbers of implants, in conclusion, four regular implants with proper attachment systems are still recommended for the overdenture in contemporary dentistry with proper attachment systems, excepting magnet attachment.