Effect of Diameter on Stability of Mini-Screws Used as Skeletal Anchorage for Maxillary Canine Retraction Using Two Force Magnitudes.

Abstract

This study investigated the effect of diameter on stability of mini-screws used as skeletal anchorage for maxillary canine retraction utilizing two different force magnitudes. Findings revealed that increasing the diameter of the mini-screws increases their stability. However, utilization of a high retraction force negatively affects stability especially with small diameters mini-screws.