Prepared byDr.Nurhuda Abdul Alim Araby, BDS (UiTM)

Introduction

Definition

Classification of Implants

Uses of Orthodontic Implants

Conventional vs Implant Anchorage

Indications

Conclusion

References

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.

?• 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.

• 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

Size & Shape

• Conical (Cylindrical)

• a) Miniscrew Implants

• b) Palatal Implants

• c) ProsthodonticImplants

• Mini plate Implants

• Disc Implants (Onplants)

Implant Bone Contact

• Osteointegrated

• Non-osteointegrated

Application

• Orthodontic purposes. (Orthodontic Implants) or TAD

• Prosthodontic and orthodontic purposes.

• 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

CHARACTER CONVENTIONAL IMPLANTS

Anchorage Teeth and extraoral bonystructures

Implants

Stability Not stable Stable

Number of Anchor Teeth

Maximum numberteeth must be included

For direct anchorage teeth arenot necessary, minimal

number of teeth are neededfor indirect force on implant

anchorage

Treatment Efficiency Applying force on teeth, part of it

is wasted, due to periodontalamortization

More efficient as force istransmitted directly to the

implant

Duration Prolonged Shortened

Patient's cooperation

Obligatory Minimal

Acceptability Most of treatment devices restrict

patients motion, don't meetesthetical requirements

Discomfort for patient isminimal

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 ofanterior and posterior segments and distalization

4. Where asymmetrical tooth movement is needed5. To treat borderline cases with non extraction

method6. Doing extreme orthodontics when patient is not

willing to undergo orthognathic surgery.

Implants have revolutionized the field ofanchorage in orthodontics.

So by choosing a correct anchorage source we can get good results in orthodontic

Treatment.

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.pdf9. http://www.archwired.com/Temporary_Anchorage_Devices_TADs.htm