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What do sales data tell us about implant survival?
Rudolf Seemann1, Alexander Jirku2, Florian Wagner1
1University Clinic of Cranio-, Maxillofacial and Oral Surgery, Medical University of Vienna, Vienna, Austria.
Plos One
|February 22, 2017
Summary
Dental implant diameter and length significantly impact survival rates. Screw-type implants with 3.8-4.3mm diameter and 11-13mm length demonstrate the lowest return rates, suggesting optimal choices for standard cases.
Area of Science:
- Dental Implantology
- Biomaterials Science
- Surgical Outcomes Research
Background:
- Dental implant survival is crucial for long-term treatment success.
- Understanding factors influencing implant failure, such as physical characteristics, is essential.
- Implant return rates serve as a valuable surrogate for implant survival data.
Purpose of the Study:
- To analyze the impact of dental implant dimensions (diameter, length) and shape on implant return rates.
- To identify specific implant characteristics associated with higher or lower rates of return.
- To provide data-driven recommendations for optimizing dental implant selection.
Main Methods:
- Retrospective analysis of 69,377 dental implants over seven years.
- Utilized a reseller's osseointegration program data for a single country.
- Employed logistic regression to assess the influence of implant type, diameter, and length on return rates.
Main Results:
- Overall implant return rate was 2.78%, comparable to published implant loss rates.
- 80% of returns occurred within 157 days, with an additional 15% by 750.25 days.
- Implants with diameters of 3.8-5.0mm (especially 4.3mm) showed the lowest return rates, while 6.0mm implants had higher rates. Shorter implants (<13mm) had higher early return rates.
Conclusions:
- Screw-type dental implants with 3.8mm or 4.3mm diameter and 11mm or 13mm length are associated with the lowest return rates in standard indications with sufficient bone.
- Specific implant dimensions appear to be critical for maximizing implant survival.
- Alternative implant designs should be reserved for specific clinical indications where their use is justified.

