Skeletal Anchorage System

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Skeletal Anchorage System

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• ??? ? ??

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Skeletal Anchorage System( Success Failure )

• Gachon Medical School
• Gil Medical Center
• Dept. of Orthodontics
• C.H.Moon D.D.S., Ph.D.

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Anchorage

• Maximum Anchorage
• Moderate Anchorage
• Minimum Anchorage

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Maximum Anchorage

• Group of Teeth ???? ??
• Nance Lingual Arch ???? ??
• Plate ???? ??
• ???? ?? ??
• Facebow ??? ??
• J-Hook ??? ??

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Maximum Anchorage

• Intraoral devices Unstable, inefficient,
• however, they do not require
• extensive cooperation from the patient
• Extraoral devices Anchorage can be quite
• stable but depends on the patients
• cooperation

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• If there were intraoral anchor points that were
  predictably stable for the period of treatment,
  relatively noninterfering, biocompatibe and
  comfortable, appliance design could be greatly
  simplified and more efficient.

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Skeletal Anchorage

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• Anchylosis
• Implant
• Palatal implant(onplant)
• Miniscrew
• Miniplate

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History

• Gainsforth and Higley (1945) Orthopedic
• anchorage by placing metallic screws and
• wires in the dog ramus.
• Branemark (1965) Fixed dental
• bridgework
• Linkow (1969, 1970) Blade implants in
  orthodontic treatment.

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History

• Mitchell (1975), Guyman (1980)
• Ankylosis tooth for anchorage
• Smith(1977), Sherman(1978), Paige et al(1980),
  Mendez et al(1980), Oliver et al(1987), Gray et
  al(1983), Turley and Roth (1983) Forces were
  applied from implant to implant to test their
  stability under such loading with endosseos
  implants.

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History

• Lubberts and Turley(1982) Studies used an
  implant to facilitate the orthodontic movement of
  a tooth.
• Turley et al(1980), Smalley et al(1987) Studies
  used an implant to facilitate the orthopedic
  movement of the maxilla.

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History

• Creekmore and Eklund(1983) The possibility of
  skeletal anchorage-surgical vitallium bone screw.
• Kanomi(1997) Mini-implant for orthodontic
  anchorage(?? 1.2mm, ?? 6mm).
• Costa(1998) Miniscrews as orthodontic
  anchorage.

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History

• ? ??(1999) Titanium microscrew implant? ???
  skeletal cortical anchorage
• ? ??(2000) Micro-implant anchorage? ??? sliding
  mechanics
• ? ?? ?(2000) ??? ?????? miniscrew ?? ??(1)
• ? ?? ?(2000) ??? ?????? titanium miniscrew?
  ????(2)

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History

• ? ??, ? ??(2001) ??? ????? ??? titanium
  miniscrew? ??? ?? ??
• ? ??, ? ??(2001) ???? ???? ???? ????? ????? ???
  ??? ?? ??? ??

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History

• Umemory M., Sugawara J., Mitani H.,
• Nagasaka H.(1998) Titanium miniplate? ???
  SAS
• Diamaruya T., Nagasaka H., Umemori M., Sugawara
  J., Mitani H.(2001) Osseointegrated titanium
  miniplate? ??? SAS

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The Advantages of SAS

• Elimination of compliance-dependent intraoral
  and extraoral anchorage aids
• Relatively predictable outcomes
• Favorable esthetics
• Reduction of orthodontic appliances

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Miniscrew

• ?? ??? ?? ( self-tapping)
• ?? ????? ? ?? ??
• ??? ??
• ?? screw? ?? ??( 2case/16case
• by Antonio Costa)
• ?? ?? ? ??? ???
• ???? ???? ????

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Miniscrew ????



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Miniscrew ????



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Miniscrew

• ??
• ?? Inf. surface of the ant. nasal spine
• Midpalatal suture
• Infrazygomatic ridge
• ?? Retromolar region
• Symphysis
• Edentulous areas of the alv. process

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Miniplate

• ?? ?? ??? ?? ??
• ?? ??? ???
• ???? ????
• ???? ??
• ?? Surgical titanium miniplate
• Super mini anchor plate(SMAP)
• C-tube, C-plate

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Miniplate ????
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Miniplate ????
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Miniplate ????