Extra-oral retraction mechanics: a review

Godfrey, Keith

doi:10.2478/aoj-2004-0005

Abstract

Objectives: The literature relating the centres of resistance of the maxillary molars, the maxillary dental arch, and the maxilla to extra-oral retraction vectors intended for both orthodontic and orthopaedic effects, is reviewed. Conventional clinical wisdom concerning the different effects of cervical-, straight-, and high-pull vectors is questioned.

Conclusion: Published studies lack the rigorous design necessary for unequivocal interpretation.

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Extra-oral retraction mechanics: a review

Abstract

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