According to publications the success rate of mini screws is 70-100%.
With the introduction of mini-screws, the possibilities of orthodontic treatment for problematic anchoring where traditional means cannot achieve the desired goal have increased. For example, it is possible to close extraction gaps, intrude or extrude teeth, bring out impacted teeth, lift crooked teeth.
The most common issue with a mini screw is its detachment. 15-25% of mini screws detach quite soon within a month after being placed. It is usually painless, but mostly requires replacement. According to publications the success rate of mini screws is 70-100%.
Another possible risk is damaging an adjacent tooth root during insertion of the mini screw. Studies show, that this small contact between a screw and a root is, however, well tolerable for the tooth, and permanent damage occurs very rarely.
The screw is inserted under anesthesia directly through the mucosa into the bone. The procedure is painless and generally takes less than five minutes. In case of adequate hygiene techniques, infection is unlikely to occur.