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The correction of interarch malocclusions using a fixed force module

J J Jasper1, J A McNamara

  • 1Department of Orthodontics and Pediatric Dentistry, School of Dentistry, Ann Arbor, USA.

American Journal of Orthodontics and Dentofacial Orthopedics : Official Publication of the American Association of Orthodontists, Its Constituent Societies, and the American Board of Orthodontics
|December 1, 1995
PubMed
Summary

A novel flexible force module, the Jasper Jumper, modifies Herbst appliances for sagittal malocclusion. This adaptable system allows greater mandibular movement, effectively correcting bite issues with enhanced patient comfort.

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Area of Science:

  • Orthodontics and Dental Biomaterials
  • Biomechanical Engineering in Dentistry

Background:

  • Sagittal malocclusion presents significant challenges in orthodontic treatment.
  • Existing fixed appliances, like the Herbst appliance, offer solutions but can limit mandibular mobility.
  • A need exists for adaptable orthodontic devices that enhance treatment efficacy and patient comfort.

Purpose of the Study:

  • To describe the application of a flexible force module, the Jasper Jumper, for correcting sagittal malocclusion.
  • To compare the functional advantages of this flexible module against traditional rigid Herbst appliances.
  • To detail the clinical management, including anchorage, activation, and reactivation, of this modular system.

Main Methods:

  • Modification of the Herbst bite jumping mechanism using a flexible spring module (Jasper Jumper).

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  • Integration of the module into existing fixed orthodontic appliances.
  • Application of force via facial musculature to the module's anchor points.
  • Clinical management protocols covering anchorage preparation, torque application, and module activation/reactivation.

    • Main Results:

    • The Jasper Jumper facilitates a greater range of mandibular movement compared to rigid Herbst appliances.
    • Treatment effects include posterior movement of maxillary buccal segments and anterior repositioning of the mandible or dentition.
    • The flexible module effectively mimics the therapeutic outcomes of the traditional Herbst appliance.

    Conclusions:

    • The Jasper Jumper represents a flexible and adaptable alternative for treating sagittal malocclusions.
    • This modular system offers enhanced mandibular mobility, potentially improving treatment outcomes and patient experience.
    • Detailed clinical management strategies ensure effective implementation of this innovative orthodontic device.