Long-Term Evaluation of ANKYLOS® Dental Implants, Part I: 20-Year Life Table Analysis of a Longitudinal Study of More Than 12,500 Implants

Purpose Scientific evidence is limited regarding the long‐term (>10 years) outcomes of large enough numbers of implants (>500) to allow for reliable comparison of subgroups. The purpose of this study was to analyze the outcomes of dental implants placed in an active University Clinic setting a...

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Published in:Clinical implant dentistry and related research 2015-01, Vol.17 (S1), p.e275-e286
Main Authors: Krebs, Mischa, Schmenger, Kai, Neumann, Konrad, Weigl, Paul, Moser, Walter, Nentwig, Georg-Hubertus
Format: Article
Language:English
Subjects:
Aged
clinical research
clinical study
crestal bone loss
Dental Implantation, Endosseous
Dental Implants
Dental Prosthesis Design
Dental Restoration Failure
Dentistry
Female
Germany
Humans
implant
implant survival
Life Tables
long-term survival
Longitudinal Studies
Male
marginal bone loss
Middle Aged
Osseointegration
Outcome Assessment (Health Care)
Postoperative Complications
Risk Factors
Survival Analysis
survival rate
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Summary:Purpose Scientific evidence is limited regarding the long‐term (>10 years) outcomes of large enough numbers of implants (>500) to allow for reliable comparison of subgroups. The purpose of this study was to analyze the outcomes of dental implants placed in an active University Clinic setting and followed for up to 20 years. Materials and Methods Data documenting the implant placement, prosthetic reconstruction, and annual follow‐up of patients treated at Frankfurt University were extracted from a Structured Query Language database and patients' written records and evaluated statistically. Results Between April of 1991 and May of 2011, 12,737 ANKYLOS® (DENTSPLY Implants Manufacturing GmbH, Mannheim, Germany) implants were placed in 4,206 patients for a variety of clinical indications. The Kaplan–Meier cumulative survival rate (CSR) was 93.3% after 204 months. Most of the failures (198/1.6%) occurred during the first year after implant placement and before prosthesis delivery. A significantly higher (p 
ISSN:1523-0899
1708-8208
DOI:10.1111/cid.12154