Long-term evaluation of ANKYLOS dental implants : 1. 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 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 < .001) number of implants placed in the mandible and in hard quality bone failed than those placed in the maxilla or in weak and normal quality bone. Female patients had significantly higher CSRs (93.7% 204 months) than male patients (92.8% 204 months/p = .029). The implants showed low rates of peri-implant bone loss after 204 months (horizontal: 21 mm: 85.7%, vertical: 21 mm: 85.2%). Conclusion: ANKYLOS dental implants followed for up to 20 years have high CSRs and low rates of peri-implant bone loss.

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Author:Mischa Krebs, Kai Schmenger, Konrad Neumann, Paul WeiglORCiD, Walter Moser, Georg-Hubertus Nentwig
Pubmed Id:https://pubmed.ncbi.nlm.nih.gov/24103113
Parent Title (English):Clinical implant dentistry and related research
Place of publication:Oxford [u.a.]
Document Type:Article
Date of Publication (online):2013/09/16
Date of first Publication:2013/09/16
Publishing Institution:Universitätsbibliothek Johann Christian Senckenberg
Release Date:2014/02/21
Tag:clinical research; clinical study; crestal bone loss; implant; implant survival; long-term survival; marginal bone loss; survival rate
Page Number:12
First Page:275
Last Page:286
© 2013 The Authors. Clinical Implant Dentistry and Related Research published by Wiley Periodicals, Inc. This is an open access article under the terms of the Creative Commons Attribution-NonCommercial-NoDerivs License http://creativecommons.org/licenses/by-nc-nd/3.0/, which permits use and distribution in any medium, provided the original work is properly cited, the use is non-commercial and no modifications or adaptations are made.
Institutes:Medizin / Medizin
Dewey Decimal Classification:6 Technik, Medizin, angewandte Wissenschaften / 61 Medizin und Gesundheit / 610 Medizin und Gesundheit
Licence (German):License LogoCreative Commons - Namensnennung-Nicht kommerziell-Keine Bearbeitung 3.0