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Maxillary overdentures retained by splinted and unsplinted implants: a retrospective study
T O Närhi1, M Hevinga, R A Voorsmit
1Department of Prosthetic Dentistry, Institute of Dentistry, University of Turku, Lemminkälsenkatu 2, 20520 Turku, Finland. timo.narhi@utu.fi
The International Journal of Oral & Maxillofacial Implants
|April 28, 2001
Summary
Maxillary implant-retained overdentures, whether bar-retained or ball-retained, significantly improve patient satisfaction and oral function. High implant survival rates were observed, with bone loss correlating to probing depth but not attachment type.
Area of Science:
- Dentistry
- Prosthodontics
- Implantology
Background:
- Conventional complete dentures often lead to functional problems for patients.
- Maxillary implant-retained overdentures offer a potential solution for improved denture stability and function.
Purpose of the Study:
- To evaluate the clinical performance and patient satisfaction of maxillary overdentures retained by splinted (bar-retained) and unsplinted (ball-retained) implants.
- To assess implant survival rates and factors influencing bone loss in patients with implant-retained overdentures.
Main Methods:
- Retrospective study of 16 patients treated with maxillary implant-retained overdentures.
- Comparison between bar-retained (n=11) and ball-retained (n=5) overdenture systems.
- Clinical examination, patient satisfaction assessment, and radiographic evaluation of bone support.
Main Results:
- All patients reported satisfaction with their overdentures, noting improved oral function.
- 92% of implants were functioning satisfactorily at the time of examination.
- Cumulative implant survival rate was 90% at 72 months.
- Bone loss correlated with peri-implant probing depth (r = 0.29; P < .02).
- No significant difference in bone loss between bar-retained and ball-retained systems.
Conclusions:
- Maxillary implant-retained overdentures provide high patient satisfaction and functional improvement.
- Both splinted and unsplinted implant retention systems demonstrate favorable long-term clinical performance and implant survival.
- Peri-implant health monitoring is crucial, as bone loss is associated with probing depth.