(Temporary Anchorage Devices)
These are also known as “mini-implants” or “mini-screws”.
The term indicates that they are as complex as dental implants which replace missing teeth. However, TADs are much simpler, in that they only require topical anaesthetic or a little amount of local anaesthetic to place. They also screw in gently and do not fuse with the bone, so they can be taken out once treatment is finished.
They are used in cases where absolute control tooth movement is needed or to prevent unwanted tooth movement, as they allow tooth movement to be leveraged against bone anchorage.