تغيرات الأنسجة الوجهية الرخوة في المستوى العمودي المرافقة لتقديم الفك العلوي باستخدام جهاز التشكل العظمي بالشد خارج الفموي ذي الاستناد الوجني في معالجة ضمور الفك العلوي

الملخص EN

Background & Objective: to evaluate the immediate craniofacial vertical changes associated with the maxillary advancement by using zygoma anchored external distraction osteogenesis device regarding to Prn height , Vl height and, Pog` height .

Material & methods: 20 patients (9male and 11 female), aged between 9 - 28 years (mean age 18.2 years) were subjected to maxillary advancement using zygom anchored external distraction osteogenesis device by external Le Fort- I osteotomy in the oral and maxillofacial department (Damascus university).Lateral cephalometric were obtained preoperative and post-advancement.

Results: The statistical analysis revels significant increase in Vl height and, Pog height and decrease in Prn height at 95% level of confidant after maxillary distraction osteogenesisin study sample.

Conclusion: From the previous study we Shaw that maxillary advancement by using zygoma anchored external distraction osteogenesis device led to immediate increase in post-operative Vl height and, Pog` height and decrease in Prn height.