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Long-term prognosis of extensive polyunit cantilevered fixed partial dentures
L Laurell1, D Lundgren, H Falk
1Department of Periodontology, Institute for Postgraduate Dental Education, Jönköping, Sweden.
The Journal of Prosthetic Dentistry
|October 1, 1991
Summary
Extensive fixed partial dentures with cantilevers show favorable long-term prognoses in patients with reduced periodontal support. Most dentures remained complication-free over 5-12 years, indicating successful prosthodontic and periodontal management.
Area of Science:
- Dental Prosthodontics
- Periodontology
Background:
- Reduced periodontal support presents challenges for fixed partial denture longevity.
- Extensive fixed partial dentures, including those with cantilevers, require careful consideration for long-term success.
Purpose of the Study:
- To evaluate the long-term prognosis of extensive fixed partial dentures with unilateral or bilateral polyunit cantilevers.
- To assess periodontal and technical complications in patients with reduced periodontal support after prosthetic rehabilitation.
Main Methods:
- Retrospective study of 36 cross-arch fixed partial dentures in 34 patients.
- Follow-up period of 5 to 12 years with regular maintenance care.
- Focus on prosthodontic design: retention, framework dimensions, and occlusal design.
Main Results:
- 33 out of 36 fixed partial dentures showed no periodontal or technical complications.
- One abutment tooth fracture and one denture loss due to periodontal breakdown were reported.
- High survival rate for extensive fixed partial dentures in periodontally compromised patients.
Conclusions:
- Extensive fixed partial dentures with cantilevers can achieve favorable long-term prognoses.
- Meticulous prosthodontic design and regular maintenance are crucial for success.
- This treatment modality is a viable option for patients with reduced periodontal support.