不同血管蒂构成下颌区复合组织瓣血供的比较

Comparison of blood supply of mandibular composite grafts with different artery pedicles

目的 :比较以颌外动脉为供血蒂和以颌外动脉及颌内动脉分支下齿槽动脉共同形成供血蒂的下颌区复合组织瓣的血供差异。方法 :在成年杂种犬和家兔利用血管造影术和放射性同位素骨三相显像技术进行观察和测定并比较不同血管蒂下颌区复合组织瓣的血供。结果 :与以颌外动脉及颌内动脉分支下齿槽动脉共同形成供血蒂相比 ,仅以颌外动脉供血时 ,下颌区血流明显减少。结论 :为安全起见 ,在半侧下颌复合器官移植 ,尤其是带有半侧下颌骨时 。

Objective:To compare results of blood supply of composite mandibular flaps in the blood supply pedicles with external maxillary artery and inferior dental artery and only with external maxillary artery. Methods: Blood supply of composite mandibular grafts with different blood supply pedicles was evaluated in canines and rabbits by using angiography and a three-phase technique of radionuclide skeletal imaging.Results:Blood flow of mandibular area were markedly reduced when only external maxillary artery was included in the blood supply pedicle Conclusion:In order to meet with success the blood supply pedicle should be composed of external maxillary artery and inferior dental artery in composite mimandibular allotransplantatation, especilly including hemimandible.