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Related Experiment Video

Updated: Jun 10, 2026

Measuring Maxillary Posterior Tooth Movement: A Model Assessment using Palatal and Dental Superimposition
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Measuring Maxillary Posterior Tooth Movement: A Model Assessment using Palatal and Dental Superimposition

Published on: February 23, 2024

The evolution of mandibular distraction: device selection.

Edward H Davidson1, Daniel Brown, Pradip R Shetye

  • 1New York, N.Y. From the Institute of Reconstructive Plastic Surgery, New York University School of Medicine.

Plastic and Reconstructive Surgery
|August 11, 2010
PubMed
Summary
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The semiburied device for mandibular distraction offers reduced scarring and better fixation but requires more bone stock. This technique is safe and effective for lengthening the hypoplastic mandible.

Area of Science:

  • Craniofacial surgery
  • Orthognathic surgery
  • Pediatric plastic surgery

Background:

  • Mandibular distraction surgery has advanced from external to intraoral and semiburied devices.
  • The evolution and application of the semiburied technique are highlighted.
  • Comparison of perioperative events for external and semiburied devices informs device selection.

Purpose of the Study:

  • To evaluate the advantages and limitations of semiburied mandibular distraction.
  • To report perioperative events associated with external and semiburied techniques.
  • To establish indications for selecting different mandibular distraction devices.

Main Methods:

  • Retrospective review of 211 mandibular distraction procedures (May 1989 - June 2009).
  • Procedures included external devices on native bone (129), external devices on grafted bone (37), and semiburied devices on native bone (45).

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Last Updated: Jun 10, 2026

Measuring Maxillary Posterior Tooth Movement: A Model Assessment using Palatal and Dental Superimposition
07:32

Measuring Maxillary Posterior Tooth Movement: A Model Assessment using Palatal and Dental Superimposition

Published on: February 23, 2024

  • Perioperative events were categorized as minor, moderate, or major incidents.

    • Main Results:

    • Semiburied devices had a higher rate of minor incidents (62%) compared to external devices (26-38%).
    • Moderate incidents were less frequent with semiburied devices (18%) than external devices (22-30%).
    • No major incidents were reported with the semiburied technique, unlike external techniques.

    Conclusions:

    • Semiburied devices offer reduced scarring, direct bone application, and a favorable vertical vector.
    • Disadvantages include the need for more bone stock and a second removal surgery.
    • Semiburied distraction is a safe, reliable option for hypoplastic mandible lengthening with sufficient bone stock.