Comparison of Clinical Initial Stability of Hydroxy-apatite Coated Implant and Sandblasted, Large-grit and Acid-etched Implant

Lim, Hyoung Sup; Kim, Su Gwan; Oh, Ji Su

Abstract

PURPOSE
This study attempts to compare the stability of hydroxy-apatite coating implant with that of sandblasted, large-grit and acid-etched surface implant at an early state of installation.
METHODS
35 implants were installed in 18 patients, who had visited hospital for implant installation. The early stability at operation, 6 weeks and 12 weeks after operation using Osstell(TM) mentor (Integration Diagnostics, Savedalen, Sweden) and Periotest(R) (Siemens AG, Benssheim, Germany) were measured, and subsequently analyzed statistically.
RESULTS
Osstell(TM) mentor value of hydroxy-apatite coated implant (HAPTITE) was measured as 70.14+/-9.07 at the stage of installation, 76.98+/-5.25 at 6 weeks and 80.28+/-4.23 at 12 weeks after installation. A statistically significant increase in measurement value was observed after 6 weeks and 12 weeks than when implants were placed. In case of IMPLANTIUM (DENTIUM Co. Ltd., Seoul, Korea), the measurement value was 74.68+/-7.42 at installation, 79.03+/-4.39 at 6 weeks and 80.59+/-3.59 at 12 weeks after installation. In addition, a statistically significant increase in the value was observed when comparative analysis of the value at after installation and 12 weeks after installation was carried out. However, no significant difference between HAPTITE and IMPLANTIUM was observed. The average measurement value of periotest(R) was -1.94+/-3.90 at installation of HAPTITE, -4.03+/-1.48 at 6 weeks and -5.00+/-1.71 at 12 weeks after installation. Moreover, whilst comparing the value at after installation and 12 weeks after installation, statistically significant decrease in the value was observed. In case of IMPLANTIUM, the average measurement value was measured as -4.25+/-1.76 at installation, -4.76+/-0.97 at 6 weeks and -5.18+/-0.91 at 12 weeks after installation and no statistically significant difference was observed. Furthermore, no statistically significant difference was observed between HAPTITE and IMPLANTIUM.
CONCLUSION
In this study, both the implants demonstrated favorable early stability at the time of measurement using Osstell(TM) mentor and Periotest(R). Moreover, based on the observed results, both HAPTITE and IMPLANTIUM are considered as potent to exhibit clinically stable and prognostic results.