Temporary Anchorage Devices (TADs)
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The document discusses orthodontic implants used for anchorage during treatment. It defines implants as temporary devices fixed to bone to control tooth movement. Implants are usually mini-screws made of titanium alloy. They provide stable anchorage as force is transmitted directly to the implant, making treatment more efficient compared to conventional anchorage. The document outlines the various uses of implants including retraction, intrusion, distalization, and asymmetrical tooth movement. It concludes that implants have revolutionized orthodontic anchorage by allowing for difficult tooth movements with minimal patient cooperation.
Temporary Anchorage Devices (TADs)
- 1. Prepared by Dr.Nurhuda Abdul Alim Araby, BDS (UiTM)
- 2. Introduction Definition Classification of Implants Uses of Orthodontic Implants Conventional vs Implant Anchorage Indications Conclusion References
- 4. Anchorage control - important aspects of orthodontic treatment. Extraoral anchorage devices requires full patient cooperation - sometimes not possible, unpredictable. Introduction of implants in orthodontics have solved this problem and become one of the best sources of reliable anchorage.
- 6. ? • A device that is temporarily fixed to bone for the purpose of controlling tooth movement during orthodontic treatment and removed when the treatment is completed. • titanium-alloy mini-screws, 6 to 12 mm in length and 1.2 to 2 mm in diameter.
- 7. • Can be located transosteally, subperiosteally, or endosteally; and they can be fixed to bone either mechanically (cortically stabilized) or biochemically (osseointegrated). •Mini implants, Microimplants, Skeletal anchorage
- 9. Size & Shape • Conical (Cylindrical) • a) Miniscrew Implants • b) Palatal Implants • c) Prosthodontic Implants • Mini plate Implants • Disc Implants (Onplants) Implant Bone Contact • Osteointegrated • Non- osteointegrated Application • Orthodontic purposes. (Orthodontic Implants) or TAD • Prosthodontic and orthodontic purposes.
- 12. • Used for retraction of anterior teeth (Class II Div I) • Uprighting of molars • Mesiodistal tooth movement • Open bite correction (archived by intruding posterior) • Molar Mesialization • Distalization of 1st and 2nd molars (Graz implant supported pendulum: GISP) • Intrusion of anterior teeth as well as molars • Onplants for expansion and protraction of maxilla
- 15. CHARACTER CONVENTIONAL IMPLANTS Anchorage Teeth and extraoral bony structures Implants Stability Not stable Stable Number of Anchor Teeth Maximum number teeth must be included For direct anchorage teeth are not necessary, minimal number of teeth are needed for indirect force on implant anchorage Treatment Efficiency Applying force on teeth, part of it is wasted, due to periodontal amortization More efficient as force is transmitted directly to the implant Duration Prolonged Shortened Patient's cooperation Obligatory Minimal Acceptability Most of treatment devices restrict patients motion, don't meet esthetical requirements Discomfort for patient is minimal
- 17. 1. Can not afford any movement of reactive units (maximum anchorage case) 2. Several missing teeth making it difficult to engage posterior units 3. For difficult tooth movements, eg intrusion of anterior and posterior segments and distalization 4. Where asymmetrical tooth movement is needed 5. To treat borderline cases with non extraction method 6. Doing extreme orthodontics when patient is not willing to undergo orthognathic surgery.
- 19. Implants have revolutionized the field of anchorage in orthodontics. So by choosing a correct anchorage source we can get good results in orthodontic Treatment.
- 21. 1. Kamlesh Singh, Deepak Kumar, Raj Kumar Jaiswal, Amol Bansal. Temporary anchorage devices – Mini-implants. Natl J Maxillofac Surg. 2010 Jan-Jun; 1(1): 30–34. 2. Gowri sankar.Singaraju, Vasu Murthy. Temporary anchorage devices in orthodontics. J Annals & Essences of Dentistry. 2009 July-Sep;Vol 1 (Issue 1). 3. Micahel K. McGuire, E. Todd Scheyer, Ronald L. Gallerano. Temporary Anchorage Devices for Tooth Movement : A review and case reports. J Periodontol. 2006 October; Vol 77 (10). 4. Aldo Carano,Stefano Velo, Paola Leone,Giuseppe Sicilliani. Clinical Applications of the Miniscrew Anchorage System. JCO.2005 Jan;Vol XXXIX 5. Dr.Jason Cope. Lecture Summary: Temporary Anchorage Devices in Orthodontics: Clinical Experimentation or Evidence-Based? . 2006 July 6. http://www.gacintl.com/userfiles/file/120-095-02infinitaspatientcard2011- 08.pdf 7. http://www.junction-orthodontics.com/hot-topics/tads-temporary-anchorage- devices-mini-screws 8. http://www.lititzortho.com/brochures/tads.pdf 9. http://www.archwired.com/Temporary_Anchorage_Devices_TADs.htm