Influence of surface characteristics on survival rates of mini-implants.

Objective: To compare the clinical performance and the survival rate of two mini-implant systems with different surface characteristics under immediate orthodontic loading.

Materials And Methods: Seventeen machined titanium (MT) mini-implants and 15 sandblasted, large grit, acid-etched (SLA) mini-implants were placed in 10 patients. The mini-implants were immediately loaded and the patients seen at 7, 14, 30, 60, and 150 days.