Edentulous jaws rehabilitation with yttrium-stabilized zirconium dioxide implants: two years follow-up experience.
OBJECTIVE
The aim of this study was to present authors' two-year clinical experience with Yttrium-stabilized zirconium dioxide implants placed in native bone or regenerated bone.


METHODS
Yttrium-stabilized zirconium dioxide implants made of brezirkon (whiteSKY, Bredent medical, Senden, Germany) were used for the treatment of edentulous ridge rehabilitation in the Dental Clinic of the University of Milan (Head of the Department, Prof. F. Santoro). Zirconium dioxide is a highly resistant ceramic material obtained by cleaning zirconium dioxide and zirconium silicate. The implant used in the clinical study featured a conical one piece implant with double cylindrical thread with a sandblasted rough surface. The prosthetic section was smooth.


RESULTS
Forty-six implants have been inserted in 18 patients from January 2007 to January 2009, the follow-up period was comprised between 6 and 24 months. The overall success rate was 89%; the success rate in native bone was 97% and 74% in augmented bone. It can be stated that the success rate is comparable to titanium fixtures.


CONCLUSIONS
It would be logical to use a ceramic material for the esthetic regions; zirconium dioxide is particularly suitable since it features tissue friendliness and resistance comparable to titanium. The good mechanical properties, possibility of easy fabrication of the prosthetic restoration and the good integration into the tissue and the esthetics provide perfect preconditions for yttrium-stabilized zirconium dioxide to become the most commonly used material in implant dentistry.
Borgonovo
A E
AE
School of Oral Surgery, University of Milan, Milan, Italy.
Arnaboldi
O
O
Censi
R
R
Dolci
M
M
Santoro
G
G
D000540:Alveolar Ridge Augmentation; D002516:Ceramics / Q000737:chemistry; D003758:Dental Implantation, Endosseous; D015921:Dental Implants; D019250:Dental Implants, Single-Tooth; D004954:Esthetics; D005500:Follow-Up Studies; D006801:Humans; D007575:Jaw, Edentulous / Q000534:rehabilitation*; D008334:Mandible; D008437:Maxilla; D016896:Treatment Outcome; D015019:Yttrium; D015040:Zirconium
D015921:Dental Implants; C499362:yttria stabilized tetragonal zirconia; D015019:Yttrium; D015040:Zirconium