[Segmental reconstruction of maxillary defects by arced distraction osteogenesis of zygoma].
OBJECTIVE
To study the possibility of segmental maxillary regeneration by arced distraction osteogenesis of zygoma.


METHODS
The distraction of zygoma with the internal arced devices was performed in 2 dogs to simulate the reconstruction of maxillary defect. The zygoma was distracted about 12 mm, and the process of new bone formation was studied by histology and scanning electron microscopy.


RESULTS
The transport disk was distracted about 12 mm around the arc. After 8 weeks of consolidation, the density of new bone was close to that of normal bone.


CONCLUSIONS
The segmental maxillary regeneration by arced distraction osteogenesis of zygoma is possible.
Niu
Xue-gang
XG
Department of Stomatology, No. 252 Hospital of PLA, Baoding Hebei 071000, China.
Zhao
Yi-min
YM
Han
Xiao-xian
XX
D000818:Animals; D015519:Bone Density; D004285:Dogs; D008437:Maxilla / Q000473:pathology / Q000601:surgery*; D019857:Osteogenesis, Distraction / Q000295:instrumentation / Q000379:methods*; D015050:Zygoma / Q000601:surgery*