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Updated: Jun 7, 2026
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A Mouse Distraction Osteogenesis Model
Published on: November 14, 2018
A minipig model of maxillary distraction osteogenesis
Maria E Papadaki1, Maria J Troulis, Julie Glowacki
1Department of Oral and Maxillofacial Surgery, Massachusetts General Hospital, Harvard School of Dental Medicine, Boston, MA 02114, USA. mpapadaki@partners.org
Summary
This study established a porcine model for maxillary distraction osteogenesis, finding that intramembranous bone formation predominantly heals the advancement zone without needing a latency period.
Area of Science:
- Craniofacial surgery
- Orthodontics
- Regenerative medicine
Background:
- Maxillary hypoplasia requires surgical correction.
- Distraction osteogenesis is a technique to lengthen bone.
- A reliable animal model is needed to study maxillary distraction osteogenesis.
Purpose of the Study:
- To establish a porcine model for maxillary distraction osteogenesis.
- To document the bone formation sequence in the advancement zone.
Main Methods:
- Female Yucatan minipigs underwent modified Le Fort I osteotomy and distraction.
- A unidirectional device was used with a 12-day distraction period and 24-day fixation.
- Histological analysis examined bone formation in the advancement zone at different time points.
Main Results:
- The porcine model was successfully established with no device failures or infections.
- Bone trabeculae formed at the periphery, with cellular activity in the center during distraction.
- Complete bone formation and clinical stability were achieved by the end of fixation.
Conclusions:
- A porcine model for maxillary distraction osteogenesis was established.
- Intramembranous ossification is the primary healing mechanism.
- A latency period is not required for bone formation in this minipig model.
