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Titanium-zirconium narrow-diameter versus titanium regular-diameter implants for anterior and premolar single crowns:
Goran I Benic1, German O Gallucci, Muizzaddin Mokti
1Clinic of Fixed and Removable Prosthodontics and Dental Material Science, Center of Dental Medicine, University of Zurich, Zurich, Switzerland.
Aim:
To test whether titanium-zirconium (TiZr) 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 subjects in need of a single implant-supported crown in the anterior or premolar regions were recruited in two centres. After random allocation, either a Ti or a TiZr implant was placed. Definitive crowns were inserted 6 months after implant placement. Implant survival, change in MBL, clinical parameters and occurrence of adverse events were assessed at the 1-year examination.
Results:
At 1 year, 38 of the 40 included patients were examined (18 Ti and 20 TiZr implants). All the implants were in place and stable. From the implant placement to the 1-year examination, the change of MBL amounted to -0.40 mm in the Ti group and -0.41 mm in the TiZr group. There were no significant differences between the groups regarding the change in MBL, the clinical parameters and the occurrence of adverse events.
Conclusions:
The use of TiZr implants with narrow diameter for the support of single crowns in the anterior and premolar regions leads to successful tissue integration and clinical performance over a 1-year period.