What is a temporary anchorage device (TAD)?
Temporary anchorage devices or TADs are what an orthodontist uses as an anchor for braces. It helps move the teeth while patients are going through orthodontic care. The development of the TAD is one of the many important advances in the field of orthodontics that makes treatment more efficient and predicable.
Information about the temporary anchorage device (TAD).
TADs are made of a bio-compatible titanium alloy and act as miniature bone anchors which Dr. Danielle can painlessly insert into the mouth. This anchor is our leverage point and it’s how we can move teeth around. Before TADs, orthodontists who wanted to move specific teeth while keeping others still, or to achieve orthodontic movement in a mouth with missing teeth, had to rely on headgear or surgery.
Here, you can see a TAD in the patient’s back left and Dr. Danielle is placing another in the front.
Here is an example of what one looks like on the palate (or roof of the mouth)
Temporary anchorage devices are not a good recommendation for everyone, and in fact, we rarely recommend them. Please contact our office you would like to know more about TADs and how they can potentially assist in orthodontic treatment.
What does a temporary anchorage device cost?
Our fee varies depending the severity of the case. Sometimes they are fairly cheap because it makes the treatment so much easier but usually the mouths that need a TAD are difficult cases to treat and thus end up not being cheap.
Complications for a TAD?
Typically the only one we see is that the TAD comes loose.
What is a temporary anchorage device removal like?
Not much to say other than easy. It simply screws right out and often we do not even need to use topical in the area.
Research on the temporary anchorage device?
Reynders EBD 2017 found in their meta-analysis that the TAD is more effective than other types of anchorage reinforcement. Dual and single thread TADs have similar failure rates according to Durrani AJO 2017, which unfortunately is around 20%. Predictors of success include insertion torque and cortical bone thickness, as well as testing devices like the Periotest.