Fabrication of a Maxillary Implant Retained Overdenture Using an Existing Subperiostal Implant: A Clinical Report

Carlos Barrero1, *, Michael B. Border2, Sompop Bencharit3
1 Department of Prosthodontics, School of Dentistry, University of North Carolina, Chapel Hill, NC, USA
2 University of Mount Union, Alliance, OH, USA; and Research Assistant, Department of Prosthodontics, School of Dentistry, University of North Carolina, Chapel Hill, NC, USA
3 Department of Prosthodontics, School of Dentistry, and Department of Pharmacology, School of Medicine, University of North Carolina, Chapel Hill, NC, USA

Article Metrics

CrossRef Citations:
Total Statistics:

Full-Text HTML Views: 439
Abstract HTML Views: 155
PDF Downloads: 68
Total Views/Downloads: 662
Unique Statistics:

Full-Text HTML Views: 202
Abstract HTML Views: 115
PDF Downloads: 62
Total Views/Downloads: 379

Creative Commons License
© Barrero et al.; Licensee Bentham Open.

open-access license: This is an open access article licensed under the terms of the Creative Commons Attribution Non-Commercial License ( which permits unrestricted, non-commercial use, distribution and reproduction in any medium, provided the work is properly cited.

* Address correspondence to this author at the Department of Prosthodontics School of Dentistry University of North Carolina, Chapel Hill, NC 27599-7450, USA; Tel: 919 966 2712; Fax: 919 966 3812; E-mail:


Subperiosteal implants used to be prescribed to partially and fully edentulous patients to restore occlusion and esthetics prior to the emergence of the more successful endosseous implants that are used today. Because subperiosteal implants had a high incidence of failure, difficulty of placement, and post-operative complications, the use of subperiosteal implants declined significantly. However, some subperiostal implants placed 20-30 years ago still survive. Little information is available in the literature on how to treat patients whose subperiosteal implants still remain. This clinical case report thereby describes a treatment for a patient with a maxillary subperiosteal implant placed 23 years ago. The patient was offered a treatment option that included surgical implant removal, bone grafting and placement of endosseous implants to support a new maxillary overdenture. This treatment plan was not feasible due to the financial constraints of the patient and the complexity of the treatment. The patient chose a more conservative treatment plan, preserving the existing implant. The existing maxillary subperiosteal implant was restored with MICRO ERA attachments and a maxillary implant-retained overdenture was fabricated. The patient was satisfied with the esthetics and functional aspects of the treatment. No further peri-implant bone loss or other complications were found after a six-month recall. This clinical report suggests an alternative treatment plan for patients with existing subperiosteal implants that wish to avoid complex surgical procedures.

Keywords: Subperiosteal implant, overdenture, implant-retained overdenture, overdenture attachment.