Abstract: An anatomically-contoured subperiosteal jaw implant includes an annular-shaped baseplate and internal support arms corresponding to a location of a plurality of height-adjustable posts. The baseplate is configured for placement over the alveolar ridge of a mandible or maxilla bone and creates a plurality of internal apertures within the baseplate to minimize the impact on the alveolar ridge and improve re-attachment of bone and soft tissue revascularization after implant insertion. The baseplate is attached with the bone via a series of screws inserted through screw holes uniquely positioned throughout the baseplate based on individual anatomical models of a patient receiving the implant, and the height-adjustable posts are also shaped for partial insertion into the bone to reduce the height of the posts and attached dental component while also improving retention of the implant. The support arms absorb stress on the posts received via a chewing or grinding action of the jaw.