Boven, G Carina Maxillary implant overdentures retained by use of bars or locator attachments: 1-year findings from a randomized controlled trial. [electronic resource] - Journal of prosthodontic research Jan 2020 - 26-33 p. digital Publication Type: Journal Article; Randomized Controlled Trial ISSN: 2212-4632 Standard No.: 10.1016/j.jpor.2019.04.013 doi Subjects--Topical Terms: Dental ImplantsDental Prosthesis, Implant-SupportedDenture RetentionDenture, OverlayHumansJaw, EdentulousMaxillaPeriodontal Index