Estimating the stability of orthodontic micro-implant after applying orthodontic force : an experimental in vivo study

Abstract EN

Aims: To evaluate weather micro-screw implants remain stationary or move against orthodontic forces during different healing periods (immediate loading, loading after 2 weeks and 4 weeks).

Materials and Methods: Thirty micro-screw implants were implanted in 6 rabbits.

These rabbits divided into 3 groups (2 in each group).

The first group received loading immediaty after implantation.

The second and third groups received loading after 2 weeks and 4 weeks of healing period respectively.

The stabil-ity of these implants was measured using periotest device before and after loading.

The data was ana-lyzed using descriptive statistic, Analysis of variance (ANOVA), Duncan Multiple analysis range test and student t-test.

Result: Among the three groups, the first group having a significant greater stability of micro-screw implants immediately before and after loading and after 2 weeks of loading period.

Conclusion: micro-screw implants can be loaded immediately after implantation with light orthodontic force; also these implants can be loaded after 4 weeks of healing period