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Long-Term Observation of Post Copings Retaining Overdenture Prostheses
The International Journal of Prosthodontics
|February 19, 2020
Summary
Customized post copings (PC) for overdenture prostheses (OD) show good long-term survival, but success depends on prosthesis design and hygiene. Cylindrical retention is superior to ball attachments for better outcomes.
Area of Science:
- Dental prosthodontics
- Biomaterials science
- Clinical dentistry
Background:
- Post copings (PC) are crucial for retaining overdenture prostheses (OD) on natural teeth.
- Long-term outcomes and complication factors for customized PCs require further investigation.
Purpose of the Study:
- To evaluate the long-term (up to 20 years) outcomes of customized post copings (PC).
- To identify factors influencing the risk of complications associated with PC-retained overdenture prostheses (OD).
Main Methods:
- A retrospective study of patients with PC-retained ODs in a university setting.
- Data included dental/periodontal parameters, radiographs, OD design, and patient satisfaction (VAS).
- Calculated 20-year cumulative survival and success rates for PCs.
Main Results:
- PC survival rate was 80.9% and success rate was 64.5% after a mean follow-up of 105.4 months.
- Cylindrical retention showed significantly better outcomes than ball attachments (P=.012).
- OD designs covering periodontal tissues had a higher risk of PC complications (OR 0.34; P=.010).
Conclusions:
- Customized PCs on natural abutments for OD retention are a viable treatment for partially dentate patients.
- Proper prosthesis design and regular dental hygiene are essential for achieving long-term success with PCs.
