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Updated: May 8, 2026

A Mouse Distraction Osteogenesis Model

A Mouse Distraction Osteogenesis Model

Published on: November 14, 2018

Mandibular symphyseal distraction osteogenesis--simplified.

S S Chopra¹, Nanda Kishore Sahoo, Balakrishna Jayan

¹AFMC, Pune.

International Journal of Orthodontics (Milwaukee, Wis.)

|August 15, 2013

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This study introduces a cost-effective method for mandibular symphyseal distraction osteogenesis (MSDO) to expand the jaw. The innovative device offers a promising alternative for increasing mandibular dimension with clinical efficiency.

Area of Science:

Orthopedic Surgery
Craniofacial Surgery
Dental Medicine

Background:

Distraction osteogenesis (DO) is established for limb lengthening and adapted for facial skeletal changes.
Conventional mandibular expansion methods yield limited results and questionable stability.
The mandibular arch transverse dimension was historically considered immutable.

Purpose of the Study:

To adapt the Ilizarov protocol for mandibular symphyseal distraction osteogenesis (MSDO).
To evaluate a novel, tooth-borne device for mandibular expansion.
To assess the efficacy and cost-effectiveness of this MSDO approach.

Main Methods:

Developed a modified, tooth-borne mandibular symphyseal distraction device using a Schwartz screw and acrylic resin.

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The device covers all erupted mandibular teeth.

Surgical procedure performed under local anesthesia in an outpatient setting.

Main Results:

The modified device is economical, easy to fabricate, and clinically efficient.
The approach allows for regenerate bone formation, increasing basal bone dimension.
Outpatient surgery avoids hospitalization costs and time.

Conclusions:

Mandibular Symphyseal Distraction Osteogenesis (MSDO) with this device offers a potentially greater effect than conventional expansion.
This low-cost MSDO approach is efficient and suitable for outpatient procedures.
Further multi-centric studies are recommended to compare MSDO with established methods.