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

MIs were invented in orthodontic to achieve the absolute skeletal orthodontic anchorage (1) . OMIs overall stability in the maxillo-facial bones has always being a key factor for their success and come from the sum of achievement of each of the primary stability through the mechanical interlocking of OMIs in to the bone immediately after their insertion and the secondary stability, which is achieved later after a healing period by the osseointegration process (2-5) . A set of overlapping factors have a large impact on OMIs stability, some of which return to the clinical steps, others return on OMIs descriptions and the patient himself will be a contributing factor in achieving that success (2) . OMIs Surface modification have to be more recommended for improving their stability and the compensation for lack of other factors through increasing bone to mini-implants contact (BIC) and removal torque values (RTv). OMIs surface treatments required several techniques included sandblasting, acid-etching, anodization and laser surface treatment techniques (6-10) . This study o Ahmed Safwat Mohamed , Noha El-Wassefy , Marwa Ali Tawfik , Mona Abdelaziz Montasser (4) (1) Dentist, Ministry of Health, Damietta, Egypt. (2) Associate Professor, Department of Dental Biomaterials, Faculty of Dentistry, Mansoura University, Egypt. (3) Lecturer, Department of Orthodontics, Faculty of Dentistry, Mansoura University, Egypt. (4) Professor, Department of Orthodontics, Faculty of Dentistry, Mansoura University, Egypt.