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Related Experiment Videos

Midpalatal suture opening during functional posterior cross-bite correction.

V A Harberson, D R Myers

    American Journal of Orthodontics
    |September 1, 1978
    PubMed
    Summary
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    The Porter or W appliance can open the midpalatal suture during posterior crossbite treatment. This suture opening, along with tooth tipping, helps correct the bite.

    Area of Science:

    • Orthodontics
    • Craniofacial development
    • Dental biomechanics

    Background:

    • Posterior crossbite is a common malocclusion.
    • Orthodontic appliances are used to correct posterior crossbite.
    • The mechanism of correction by specific appliances requires elucidation.

    Purpose of the Study:

    • To investigate midpalatal suture opening during posterior crossbite treatment.
    • To evaluate the efficacy of Porter or W appliances in suture expansion.

    Main Methods:

    • Radiographic analysis of ten patients treated with Porter or W appliances.
    • Assessment for evidence of midpalatal suture opening.

    Main Results:

    • Eight out of ten patients showed radiographic evidence of midpalatal suture opening.

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  • The findings suggest suture expansion is a potential mechanism.

    • Conclusions:

    • Midpalatal suture opening occurs in a majority of cases treated with Porter or W appliances.
    • Correction may involve suture expansion combined with buccal tooth tipping, or solely tooth tipping.