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Titanium‐zirconium narrow‐diameter versus titanium regular‐diameter implants for anterior and premolar single crowns: 3‐year results of a randomized controlled clinical study
Author(s) -
Ioannidis Alexis,
Gallucci German O.,
Jung Ronald E.,
Borzangy Sary,
Hämmerle Christoph H. F.,
Benic Goran I.
Publication year - 2015
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/jcpe.12468
Subject(s) - premolar , implant , dentistry , titanium , medicine , zirconium , dental implant , materials science , molar , orthodontics , surgery , metallurgy
Aim To test whether titanium‐zirconium (Ti‐Zr) 3.3 mm diameter implants perform differently from titanium (Ti) 4.1 mm diameter implants with respect to marginal bone level ( MBL ) and clinical parameters. Material and Methods Forty patients in need of a single‐implant crown in the anterior or premolar regions were enrolled in two centres. Following random allocation, either a Ti‐Zr or a Ti implant was inserted. Porcelain‐fused‐to‐metal crowns were inserted 6 months after implantation. Implant survival, change in MBL , clinical parameters, change in mid‐facial mucosa and papilla levels, and the occurrence of biological and technical complications were assessed at the 3‐year follow‐up. Results At 3 years, 32 of the 40 included patients were examined (15 Ti and 17 Ti‐Zr implants). There were no implant failures. From the implant placement to 3 years, the median change in mean MBL amounted to 0.21 mm (mean: −0.31) in the Ti group and 0.10 mm (mean: −0.40) in the Ti‐Zr group. There were no significant differences between the groups with respect to the change in MBL , the change in mucosa levels, and the occurrence of complications. Conclusions Ti‐Zr implants with 3.3 mm diameter used for the support of single crowns in the anterior and the premolar regions did not differ from Ti implants with 4.1 mm diameter regarding the clinical performance over a 3‐year period.