Tawse-Smith, A One-stage operative procedure using two different implant systems: a prospective study on implant overdentures in the edentulous mandible. [electronic resource] - Clinical implant dentistry and related research 2001 - 185-93 p. digital Publication Type: Clinical Trial; Journal Article; Randomized Controlled Trial ISSN: 1523-0899 Standard No.: 10.1111/j.1708-8208.2001.tb00140.x doi Subjects--Topical Terms: AgedAged, 80 and overChi-Square DistributionDental Implantation, Endosseous--methodsDental Implants--adverse effectsDental Prosthesis DesignDental Prosthesis RetentionDental Prosthesis, Implant-SupportedDental Restoration FailureDenture, Complete, LowerDenture, OverlayFeasibility StudiesFemaleHumansJaw, Edentulous--rehabilitationMaleMandibleMiddle AgedPeriodontal Attachment Loss--etiologyProspective StudiesStatistics, Nonparametric