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J Clin Periodontol. 2018 Jan;45(1):114-124. doi: 10.1111/jcpe.12815. Epub 2017 Nov 28.

One-piece zirconia oral implants for single-tooth replacement: Three-year results from a long-term prospective cohort study.

Author information

1
Department of Prosthetic Dentistry, Center for Dental Medicine, Medical Center - University of Freiburg, Faculty of Medicine, University of Freiburg, Freiburg, Germany.

Abstract

AIM:

This 3-year report of a prospective long-term cohort investigation aimed to evaluate the clinical and radiographic outcomes of a one-piece zirconia oral implant for single-tooth replacement.

MATERIALS AND METHODS:

Sixty-five patients received a 1-stage implant surgery with immediate temporization. Standardized radiographs were taken at implant insertion, after 1 year, and after 3 years to monitor peri-implant bone levels. A univariate analysis of the association of different baseline parameters on marginal bone loss from implant insertion to 36 months was performed. Soft-tissue parameters were evaluated at prosthesis insertion, after 6 months, after 1 year, and at the 3-year follow-up.

RESULTS:

After 3 years, six posterior site implants were lost, giving a cumulative survival rate of 90.8%. The mean marginal bone loss was 1.45 mm; 35% of the implants lost at least 2 mm bone, and 22% more than 3 mm. The univariate analysis did not identify any parameter associated with marginal bone loss. Probing depth, clinical attachment level, and bleeding index increased over 3 years, and plaque index decreased.

CONCLUSIONS:

The low survival rate of the presented ceramic implant and especially the high frequency of advanced bone loss are noticeable but remain unexplained.

KEYWORDS:

clinical investigation; oral implants; prospective; zirconia

PMID:
28902420
DOI:
10.1111/jcpe.12815
[Indexed for MEDLINE]

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