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Updated: Aug 25, 2026
A Mouse Distraction Osteogenesis Model
Published on: November 14, 2018
Stability after distraction osteogenesis to lengthen the mandible: results in 50 patients
P J van Strijen1, K H Breuning, A G Becking
1Department of Oral and Maxillofacial Surgery, Gelderse Vallei Hospital, Ede, The Netherlands. strijenp@zgv.nl
Purpose:
The purpose of this study was to investigate mandibular stability after lengthening the mandible by means of distraction.
Materials And Methods:
Fifty patients (mean age, 14.7 years; range, 11.2 to 37.3 years) with Angle Class II mandibular hypoplasia were treated by bilateral distraction osteogenesis to lengthen the mandible. Patients were divided into a high-angle group, with a high mandibular angle (sella/nasion-mandibular plane [SN-MP] >38 degrees), and a normal-to-low mandibular angle group (SN-MP
Results:
Eight of 14 high-angle patients showed a degree of relapse (57%), and only 3 of 36 patients showed relapse in the low/normal-angle group (8.3%).
Conclusion:
It can be concluded that high-angle patients are still at risk of relapsing and that distraction osteogenesis cannot prevent relapse in cases with a high mandibular plane angle. For low-angle patients, however, distraction is a safe and predictable procedure.
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