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Related Experiment Videos

Ankylosed teeth as abutments for maxillary protraction: a case report.

V G Kokich, P A Shapiro, R Oswald

    American Journal of Orthodontics
    |October 1, 1985
    PubMed
    Summary

    Intentional tooth ankylosis can help correct severe maxillary retrusion by using ankylosed deciduous teeth for extraoral traction, enabling maxillary movement without unwanted tooth displacement.

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    Area of Science:

    • Orthodontics
    • Craniofacial Biology

    Background:

    • Maxillary retrusion treatment is often limited by tooth movement when using conventional extraoral force.
    • Conventional orthodontic treatment using maxillary teeth for extraoral force can lead to undesirable tooth movement and periodontal remodeling.

    Observation:

    • A novel technique utilizing intentionally ankylosed deciduous teeth as abutments for delivering extraoral force was applied in a patient with severe maxillary retrusion.
    • Anteriorly directed intermittent extraoral force was applied to the ankylosed teeth for 12 months, successfully correcting an anterior crossbite.

    Findings:

    • Cephalometric analysis confirmed that the occlusal correction resulted from anterior maxillary movement.
    • The ankylosed teeth remained stable, showing no significant movement, while the maxilla advanced.

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  • Root resorption eventually caused the ankylosed teeth to loosen, leading to treatment termination.

    • Implications:

    • Intentionally ankylosed teeth offer a viable alternative anchorage for orthodontic treatment in severe maxillomandibular malrelationships.
    • This technique shows potential for enhancing maxillary growth and correcting skeletal discrepancies when conventional methods are limited by tooth mobility.