Implant-Supported Overdenture Therapy: A Retrospective Study

Ekfeldt, Anders; Johansson, Lars-Åke; Isaksson, Sten
July 1997
International Journal of Prosthodontics;Jul/Aug1997, Vol. 10 Issue 4, p366
Academic Journal
All patients (n = 46) treated with implant-supported overdentures at the Department of Prosthetic Dentistry, Dental and Medical Health Centre, Halmstad, Sweden, from 1986 to 1993 were studied. The clinical examination was completed in 1994. The material was divided into two subgroups: Group A had been initially treatment planned for an implant-supported overdenture, and Group B had been planned for fixed prostheses but because of loss of implants before loading, treatment with a fixed prosthesis was not possible. The authors present their experience and patient reactions to overdenture therapy in two defined groups of patients. The implant failure rate before loading for Group A (n = 12) was 15% (six implants out of 39), and the rate before loading for Group B (n = 29) was 43.6% (68 implants out of 156). After prosthodontic treatment in Group A, the implant success rate after loading was 87.9%, and the overdenture stability was 84.6%. In group B, 17 implants placed in the maxillae were lost after overdenture therapy, which resulted in an implant success rate of 79.3%. A total of eight overdentures, all of which had been placed in the maxillae, were lost, resulting in an overdenture stability of 73.3% In this study "change of retentive clips" was the predominant prosthodontic complication related to the overdentures, especially in Group B. Most of these complications (62%) occurred in patients with clinical signs of bruxism, Patient reactions to treatment with an overdenture were positive regarding esthetics for both groups. More negative views were recorded in Group B than in Group A in response to function and retention of the overdenture.


Related Articles

  • Commentary: Removable Dentures with Implant Support in Strategic Positions Followed for Up to 8 Years. Chvartszaid, David // International Journal of Prosthodontics;2009, Vol. 22 Issue 3, p242 

    The author comments on the article "Removable Dentures with Implant Support in Strategic Positions Followed for Up to 8 Years." He states that implant dentures were originally meant as a cure for edentulism and that only with the development of implant-supported overdentures is this treatment...


    This is a case report of the restoration of a partially edentulous atrophic anterior maxilla and atrophic mandibular posterior ridges. This case report demonstrates one method for successful treatment of partial edentulism at No. 7 to 10, where interlock attachments on natural cuspids and mini...

  • A Comparison of Implant-Supported, Bar or Ball Retained Mandibular Overdentures: A Retrospective Clinical, Microbiologic and Immunologic Study of 10 Edentulous Patients Attending a Recall Visit. Ley, John // Journal of Oral Implantology;2007, Vol. 33 Issue 3, p173 

    A review of the article "A Comparison of Implant-Supported, Bar or Ball Retained Mandibular Overdentures: A Retrospective Clinical, Microbiologic and Immunologic Study of 10 Edentulous Patients Attending a Recall Visit," by S. Lachmann, E. Kimmerle-Muller, K. Gehring et al, published in the...

  • Overdentures: An Alternative Implant Methodology for Edentulous Patients. Mericske-Stern, Regina; Zarb, George A. // International Journal of Prosthodontics;Mar/Apr1993, Vol. 6 Issue 2, p203 

    Two groups of elderly edentulous patients with implant-supported mandibular overdentures were compared. There were 25 patients with an average age of 62.2 years and 34 patients with an average age of 68.9 years treated in Toronto and in Bern, respectively. A high incidence of compromised general...

  • Complete Dentures Fixed on Dental Implants: Chewing Patterns and Implant Stress. Setz, J.; Kr�mer, A.; Benzing, U.; Weber, H. // International Journal of Oral & Maxillofacial Implants;Summer1989, Vol. 4 Issue 2, p50 

    Electrognathographic measurements on 18 patients with implant-attached mandibular complete dentures showed larger and more stable chewing patterns compared to their former dentures without implants. Strain gauge measurements revealed mechanical stress acting on the implants even during the...

  • Preparation of the denture-bearing area--An essential component of successful complete-denture treatment. Lynde, Thomas A.; Unger, John W. // Quintessence International;Oct1995, Vol. 26 Issue 10, p689 

    Success in complete-denture treatment is often directly related to the health and condition of the hard and soft tissues that make up the denture-bearing areas. Surgical alteration of the denture-bearing area is frequently necessary to ensure a morphologically correct form capable of providing...

  • Soft Liner-Retained, Implant-Supported Overdenture: A Technical Note. Cain, Joseph R.; Mitchell, Donald L. // International Journal of Oral & Maxillofacial Implants;Nov/Dec1998, Vol. 13 Issue 6, p857 

    This paper describes the design and fabrication of a soft liner-retained, implant-supported overdenture used in 10 patients over a period of 1 to 6 years. A final complete denture impression is made of the dental arch, including implant abutments extending 5 mm above the gingival tissue. The...

  • Literature Abstracts.  // International Journal of Prosthodontics;Sep/Oct1998, Vol. 11 Issue 5, p401 

    The article presents abstracts on prosthodontics topics which include the effectiveness of radiographic diagnosis of peri-implant radiolucencies, impact of irradiation on the biomechanics of osseointegration, and implant-supported overdentures.

  • Bite Forces with Mandibular Implant-Retained Overdentures. Fontijn-Tekamp, F. A.; Slagter, A. P.; Van't Hof, M. A.; Geertman, M. E.; Kalk, W. // Journal of Dental Research;Oct1998, Vol. 77 Issue 10, p1832 

    Sensitivity or pain of the mucoperiosteum covering the mandibular edentulous ridge is often thought to limit bite forces in complete-denture wearers. Therefore, bite forces with mandibular implant-retained overdentures may depend on the degree of implant support. This study analyzed the effects...


Read the Article


Sorry, but this item is not currently available from your library.

Try another library?
Sign out of this library

Other Topics