TAD is a small metal screw which acts as a temporary anchorage device to assist with complex movement of teeth.
This mini screw implant is beneficial as it can move a tooth without affecting the position of surrounding teeth.
The procedure usually only takes about a few minutes and stays in place for a few months until desired movement is complete.
No, the screw insertion itself will not cause much pain. Local anaesthetic is used to numb the gum prior to the insertion. However, there might be a slight tender feeling for 3-5 days following the adjustment due to fixation of the braces. (Not too sure if I have gotten this right.)
No local anaesthetic is required during removal of TAD screws. The healing process only takes a few days without any discomfort.