Effect of different Surface Treatments of Orthodontic Mini-Implants on their Primary Stability; An in-vitro study

Document Type : Original Article

Authors

Professor, Department of Orthodontics, Faculty of Dentistry, Mansoura University, Egypt

Abstract

Objective: The effect of sand-blasting, acid-etching and anodic-oxidation (SLAO) versus Carbon dioxide laser (Co2) laser radiation of orthodontic mini-implants (OMIs) is studied to evaluate their primary stability in fresh animal bone blocks.
Materials and Methods: 36OMIs from the same manufacturer(Hubit, Gyeonggi-do, Korea);made from Grade 5(Ti-6Al-4V) alloy. They were divided according to methods of their surface treatment into the following groups: group I—No surface treatment, group II—SLAO surface treatment, group III—CO2 laser irradiation surface treatment. All OMIs were the manually inserted into prepared bone blocks of fresh bovines' femoral bone heads. Primary stability values for OMIs were measured by Periotest® device and then by Pullout-test device with non-axial forces and at pull-out angle ranged between 15° and 25° to each OMI longitudinal axis.
Results: Surface treatment of Grade 5 Ti-6Al-4V alloy OMIs by SLAO achieved the higher primary stability results of pull-out test followed by OMIs with CO2 laser radiation surface treatment then the machined surface OMIs. Moreover, all OMIs studied groups have no statistically significant difference in perio-test® values
Conclusions: Within the limitations of this study, it can be concluded that :surface treatment of OMIs by each of SLAO and CO2 laser radiation significantly affected their primary stability in fresh bone blocks.
 

Keywords

Files

Share

How to cite

Statistics