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Temporary Anchorage Devices in orthodontic treatment

 What are TADs (Temporary Anchorage Devices)?
         TADs are mini-screws or mini implants made out of specially engineered titanium alloys. They have revolutionized orthodontic treatment outcome due to its innumerable applications.
They are bio compatible and rarely ever cause any body reaction. They may be of varying sizes, ranging from 6 to 12 millimetres in length and 1.2 to 2 millimetres in diameter. They are fixed into the gums and jawbone temporarily to improve the anchorage (support) for tooth movement and are removed after the purpose is over.  

When and why should TADs be used?

          Orthodontists often use other teeth, holding arches and headgears to control anchorage and prevent unwanted changes in certain teeth while carrying out the desired movement of other teeth. However, there are lots of disadvantages with these methods. They are cumbersome to place and irritating for the patients with reduced tolerance and compliance.
TADs allow orthodontists to overcome limitations of holding arches and headgear and perform difficult tooth movements predictably improving the efficiency and effectiveness of the orthodontic treatment. There are several advantages of using TADs.
·         It can provide support for various types tooth movement
·         Wide range of tooth movements simultaneously possible
·         Reduces treatment time, thereby reducing the potential risk for cavities and gum problems ·         ·         Eliminates need for cumbersome attachments and patient compliance
·         It can obviate need for surgical procedures in certain cases
·         It can provide anchorage in cases of missing teeth also.

Where are TADs placed?
           TADs are placed in the bone between the roots of the teeth and can be placed in the bone in the roof of the palate and various locations in the jaw bones.

How is a TAD placed?
           Placement is minimally invasive and often completed using only topical anesthetic. Sometimes injection of local anaesthesia
 may be required if drilling into the bone is required. TADs are inserted directly through the gums into the bone using long hand or short hand drivers.  

Does it hurt?

            There is little or no discomfort as there are no nerve endings in the bone tissue. If it hurts, then ibuprofen or acetaminophen is prescribed for a couple of days. Once placed, the orthodontist will able to use the TAD as orthodontic anchorage immediately.  

Who places the TAD?
           As the orthodontists have the training and expertise to place them, most of the orthodontists place TADs themselves. This ensures the TAD is placed exactly where the orthodontist wants it. Some orthodontists may choose to have a TAD placed by another dental specialist.    
 
What are the instructions for preventing loosening of TADs ?           
           Thorough cleansing is required to prevent food and plaque deposit around the TADs. An antiseptic mouthwash is used to rinse to prevent bacterial attack over the gums surrounding the TADs, if allowed can cause loosening of the TAD.    

 How long are TADs left in?
           It depends upon individual treatment needs and can be discussed with the orthodontist who will decide about how long a TAD will be needed. It may be required only for a few months, or it may be needed throughout your orthodontic treatment. TADs are versatile and may be used in different areas of the mouth during different parts of treatment.   Will It Hurt When It Is Removed? TADs are simply removed when no longer needed, usually without anaesthesia and the site heals painlessly within a few days after removal.

Can TADs be used for everyone?

           TADs are placed on patients who have permanent teeth and who are in good health. Patients with active periodontal (gum) disease may not be ideal candidates for TADs.

Dr.S.VENKATESWARAN
Consultant Orthodontist
Venkat Dental Center
3A, P.T.Rajan Salai,
KK Nagar, Chennai-78,
Ph-044-24746073, 24746078, 944845443, 9003230250



Doctor Dr. Venkateswaran Sundaram, 2013081923:31:39



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