Mid-term survival of double-crown-retained dental prostheses
Author Information
Author(s): Klotz Anna-Luisa, Hagspiel Stefanie, Büsch Christopher, Zenthöfer Stephanie, Rammelsberg Peter, Zenthöfer Andreas
Primary Institution: University of Heidelberg
Hypothesis
The survival probabilities of double-crown-retained removable dental prostheses (dcRDPs) would be lower than those reported in university studies.
Conclusion
Double-crown-retained prostheses fitted in a dental practice had acceptable mid-term survival rates and manageable complications.
Supporting Evidence
- 39 (18%) of the dcRDPs failed during the observation period.
- The probability of absence of prosthesis-related complications was 92% after 2 years and 80% after 5 years.
- 141 dcRDPs (66.2%) faced at least one complication during the observation period.
- Survival correlated with lower patient age and more abutment teeth.
Takeaway
This study looked at how well special dental prostheses last and how often they cause problems. They found that these prostheses work pretty well in regular dental practices.
Methodology
The study analyzed anonymized data from 174 patients fitted with 213 dcRDPs, evaluating survival and complications over a mean observation period of 3.9 years using Kaplan–Meier and Cox regression analyses.
Potential Biases
The retrospective nature of the study may introduce selection bias, as data were collected from a single dental practice.
Limitations
The study is retrospective, and some data may be missing; also, the failure rate may be overestimated due to lost prostheses being classified as failures.
Participant Demographics
The mean age of participants was 68.6 years, with 43% male and 57% female.
Statistical Information
P-Value
0.048 for age, p<0.001 for number of abutments
Confidence Interval
94% (90–97%) after 2 years; 86% (80–92%) after 5 years
Statistical Significance
p<0.05
Digital Object Identifier (DOI)
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