These are also known as “mini-implants” or “mini-screws”.

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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.

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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.