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Related Experiment Videos

Implant-supported overdenture therapy: a retrospective study

A Ekfeldt1, L A Johansson, S Isaksson

  • 1Department of Prosthetic Dentistry, Dental and Medical Health Centre, Halmstad, Sweden.

The International Journal of Prosthodontics
|July 1, 1997
PubMed
Summary

Implant-supported overdentures showed positive patient esthetics but higher complication rates, particularly in patients with bruxism. Success rates varied between planned overdenture and conversion groups.

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Area of Science:

  • Dentistry
  • Prosthodontics
  • Implantology

Background:

  • Implant-supported overdentures offer a restorative solution for edentulous patients.
  • Patient satisfaction and long-term success depend on various factors, including implant survival and prosthesis stability.

Purpose of the Study:

  • To evaluate the outcomes and patient experiences with implant-supported overdentures in two distinct patient groups.
  • To compare implant failure rates, prosthesis stability, and complication incidence between planned overdenture and conversion cases.

Main Methods:

  • A retrospective study of 46 patients treated with implant-supported overdentures between 1986-1993.
  • Patients were divided into Group A (initially planned for overdentures) and Group B (converted from planned fixed prostheses due to implant loss).

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  • Clinical examinations assessed implant success rates, overdenture stability, and prosthodontic complications, including patient reactions.

    • Main Results:

    • Group B experienced significantly higher implant failure rates before loading (43.6%) compared to Group A (15%).
    • After treatment, implant success rates were 87.9% in Group A and 79.3% in Group B. Overdenture stability was 84.6% and 73.3%, respectively.
    • The main complication was the change of retentive clips, especially in Group B and in patients with bruxism. Patient-reported esthetics were positive, but function and retention were viewed more negatively in Group B.

    Conclusions:

    • Implant-supported overdentures can achieve favorable esthetic outcomes and patient acceptance.
    • Higher implant failure rates and complications, particularly retentive clip issues and reduced functional satisfaction, were observed in patients converted to overdentures.
    • Management of bruxism and careful patient selection are crucial for optimizing implant-supported overdenture therapy outcomes.