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Related Experiment Videos

Severe anterior open-bite case treated using titanium screw anchorage.

Shingo Kuroda1, Akira Katayama, Teruko Takano-Yamamoto

  • 1Department of Orthodontics and Dentofacial Orthopedics, Graduate School of Medicine and Dentistry, Okayama University, Okayama, Japan.

The Angle Orthodontist
|September 25, 2004
PubMed
Summary

This study shows titanium screw anchorage effectively intrudes molars to treat severe skeletal anterior open bites. This orthodontic technique improved occlusion and facial profile in a patient with significant open bite.

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Area of Science:

  • Orthodontics
  • Dental Implantology
  • Skeletal Malocclusion

Background:

  • Anterior open bite often results from mandibular rotation or posterior tooth over-eruption.
  • Achieving absolute anchorage for molar intrusion is challenging with conventional orthodontic methods.
  • Severe skeletal anterior open bite cases require innovative treatment approaches.

Purpose of the Study:

  • To evaluate the efficacy of titanium screw anchorage for treating severe skeletal anterior open bite.
  • To assess the impact of molar intrusion using temporary anchorage devices on occlusion and facial aesthetics.

Main Methods:

  • A severe skeletal anterior open-bite case (-7.0 mm) in a 33-year-old female was treated.
  • Titanium screws were placed in the maxilla and mandible as temporary anchorage devices.

Related Experiment Videos

  • Elastic chains applied intrusive force to the first molars for 13 months.

    • Main Results:

    • Successful intrusion of approximately 3.0 mm for both upper and lower first molars was achieved.
    • Good occlusion was established after 19 months of active orthodontic treatment.
    • Improvements in the patient's retrognathic chin and convex profile were observed due to mandibular upward rotation.

    Conclusions:

    • Titanium screw anchorage is a viable and effective method for molar intrusion in anterior open-bite cases.
    • This technique offers a solution for complex orthodontic challenges where traditional mechanics are insufficient.
    • The study highlights the potential of temporary anchorage devices in correcting severe skeletal malocclusions.