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将犬随机分为Ａ（即时）组、Ｂ（７２ｈ）组，采用ＫＴＹ－０４型雷管置于犬面颊部引爆致伤，造成软组织洞穿性缺损。Ａ组伤后即刻清创、隐动脉皮瓣立即移植修复皮肤缺损；Ｂ组伤后即刻清创，７２ｈ后二次清创，同时切取隐动脉皮瓣，吻合血管修复皮肤缺损，颊粘膜缺损两组均行局部拉拢缝合。术后观察１～６个月，Ａ组５例均失败；Ｂ组１５例，成功１２例，游离皮瓣成活率为８０％。实验结果表明口腔颌面部爆炸伤软组织缺损经早期清创，７２ｈ后扩创，用吻合血管游离皮瓣修复是可行的。
The dogs were randomly divided into A (immediate) group and B (72h) group, which were detonated by KTY-04 type detonator in the buccal part of canine, resulting in soft tissue penetration defect. Group A was debrided immediately after injury and the flap of the saphenous artery was transplanted immediately to repair the skin defect. Group B was debrided immediately after injury and debridement was performed 72 hours later. At the same time, the flaps of the saphenous vein were cut off, the vascular defects were repaired by vascular anastomosis, Group were locally suture stitched. After operation for 1 to 6 months, 5 cases in group A failed; 15 cases in group B, 12 cases were successful, and the survival rate of free flap was 80%. The experimental results show that debridement of oral and maxillofacial soft tissue defects by early debridement, expansion after 72h, free flap repair with anastomosis is feasible.