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One‐piece zirconia oral implants: one‐year results from a prospective cohort study. 1. Single tooth replacement
Author(s) -
Kohal RalfJoachim,
Knauf Marko,
Larsson Birgitta,
Sahlin Herman,
Butz Frank
Publication year - 2012
Publication title -
journal of clinical periodontology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 3.456
H-Index - 151
eISSN - 1600-051X
pISSN - 0303-6979
DOI - 10.1111/j.1600-051x.2012.01876.x
Subject(s) - medicine , implant , dentistry , radiography , prosthesis , survival rate , bleeding on probing , univariate analysis , osseointegration , surgery , multivariate analysis , periodontitis
Aim To investigate the clinical and radiographic outcome of a one‐piece zirconia oral implant for single tooth replacement after 1 year. Materials and Methods A total of 65 patients received a one‐stage implant surgery with immediate temporization. Standardized radiographs were taken at implant insertion and after 1 year to monitor peri‐implant bone loss. A univariate analysis of the influence of different baseline parameters on marginal bone loss from implant insertion to 12 months was performed. Soft tissue parameters were evaluated at prosthesis insertion and at the 1‐year follow‐up. Results After 1 year, three implants were lost, giving a cumulative survival rate of 95.4%. The marginal bone loss after 1 year was 1.31 mm. Thirty‐four per cent of the implants lost at least 2 mm bone, and 14% more than 3 mm. The univariate analysis could not depict any parameter influencing marginal bone loss. Probing depth, Clinical Attachment Level, Bleeding and Plaque Index decreased over 1 year. Conclusions The cumulative survival rate of the presented ceramic implant was comparable to the reported survival rate of titanium implants when immediately restored. However, the frequency of increased radiographic bone loss (>2 mm) after 1 year was considerably higher as compared to conventional two‐piece titanium implants. The presented zirconia implant can therefore not be recommended for clinical usage.