Osseointegration of zirconia implant in the tibia of pigs.
10.4047/jkap.2013.51.3.190
- Author:
Lee Kyoung KIM
1
;
In Ho CHO
Author Information
1. Department of Prosthodontics, School of Dentistry, Dankook University, Cheonan, Korea. cho8511@dankook.ac.kr
- Publication Type:Original Article
- Keywords:
Zirconia implant;
Bone to implant contact;
Bone area;
Histomorphometry
- MeSH:
Aluminum Oxide;
Nitrogen Mustard Compounds;
Osseointegration;
Swine;
Tibia;
Titanium;
Zirconium
- From:The Journal of Korean Academy of Prosthodontics
2013;51(3):190-198
- CountryRepublic of Korea
- Language:Korean
-
Abstract:
PURPOSE: The purposes of this study were to investigate osseointegration around zirconia implants which had machined or alumina sandblasted surface, and to compare the results with titanium implants. MATERIALS AND METHODS: The study was performed on the tibia of 6 pigs. Three types of implants were investigated: group T-titanium implant, group Z-machined zirconia implant, group ZS-alumina sandblasting treated zirconia implant. Zirconia implants were manufactured from yttria-stabilized tetragonal zirconia polycrystalline (Acucera Inc., Pocheon, Korea). A total of 36 implants were installed in pigs' tibias. After 1, 4 and 12 weeks of healing period, the periotest and the histomorphometric analysis were performed. The data were analyzed using one-way ANOVA and significance was assessed by the Scheffe test (alpha=.05). RESULTS: In the measurement of surface roughness, highest Ra value was measured in group T with significant difference. No significant differences were found among groups regarding Periotest values. After 1 week, in comparison of bone to implant contact (BIC), group Z showed higher value with significant difference. In comparison of bone area (BA), group T and group Z showed higher value with significant difference than group ZS. After 4 weeks, in comparison of BIC, group T showed higher value with significant difference. Comparison of BA showed no significant difference among each implant. After 12 weeks, the highest mean BIC values were found in group T with significant difference. Group ZS showed higher BIC value with significant difference than group Z. In comparison of BA, group T and group ZS showed higher value with significant difference than group Z. CONCLUSION: Zirconia implant showed low levels of osseointegration in this experiment. Modification of surface structure should be taken into consideration in designing zirconia implants to improve the success rate.
