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Simultaneous correction of functional posterior cross bite and midline shift.

R Arvinth1, Shailendra Singh Rana1, Ritu Duggal1

  • 1Centre for Dental Education and Research, Division of Orthodontics and Dentofacial Deformities, All India Institute of Medical Sciences, New Delhi, India.

Contemporary Clinical Dentistry
|September 16, 2016
PubMed
Summary

This study demonstrates effective management of posterior crossbite and upper midline shift using rapid maxillary expansion and fixed appliances. The treatment successfully corrected dental arch width and midline deviation without adverse effects.

Keywords:
Functional shiftmidline shiftposterior crossbite

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Area of Science:

  • Dentistry
  • Orthodontics
  • Craniofacial Biology

Background:

  • Posterior crossbite, often caused by a narrow maxillary dental arch, frequently coexists with anterior crowding and an upper midline shift.
  • This complex malocclusion can result from infrapositioned canines or palatally displaced lateral incisors, leading to a deviation of the upper midline towards the affected side.

Observation:

  • A case report detailing the simultaneous correction of functional posterior crossbite and upper midline shift is presented.
  • The malocclusion involved a narrow maxillary arch, anterior crowding, and a noticeable shift in the upper dental midline.

Findings:

  • Rapid maxillary expansion combined with a fixed appliance effectively corrected the posterior crossbite and the associated upper dental midline shift.
  • The treatment utilized the reciprocal action of elastic transseptal fibers to achieve the desired orthodontic correction.

Implications:

  • This combined approach offers a viable solution for managing complex posterior crossbite cases with midline deviations.
  • The successful outcome suggests that this orthodontic strategy can correct significant arch discrepancies and midline shifts without causing adverse side effects.