目的 :建立标准的颌面部爆炸伤动物模型 ,并对其生物力学特性进行初步研究。方法 :选用微球形爆炸源距犬面部不同距离引爆致伤 ,建立动物模型 ,记录致伤瞬间不同层次组织压力 ,下颌骨、颅骨水平冲击加速度 ,下颌骨、颞骨应变值。结果 :爆炸源距犬面部体表 0cm引爆致伤时 ,犬面部约 3 .5cm× 3cm软组织缺损 ,并伴发下颌骨角部粉碎性骨折 ,动物存活。爆炸源距犬面部 0cm ,10cm引爆致伤时 ,下颌骨表面冲击压力分别减小至体表的 3 .6%、2 .9% ;颅骨冲击加速度分别减小至下颌骨的 1/ 8、1/ 6;犬下颌骨应变达到 113 75 με时会发生粉碎性骨折。结论 :该模型是标准的颌面部爆炸伤动物模型。 Objective: To establish a standard animal model of maxillofacial explosive injury and to study its biomechanical properties. Methods: The microspherical explosive sources were used to detonate the wounds at different distances from the face of dogs. Animal models were established. Tissue pressure, mandibular and skull horizontal impact acceleration, mandibular and temporal bone strain values ​​were recorded at the moment of injury. Results: When the detonator was detonated at 0cm from the body surface of the dog, the soft tissue defect of the face of the dog was about 3.5cm × 3cm, accompanied by comminuted fracture of the corner of the mandible. The animals survived. When the explosive source was 0cm away from the face of the dog, the impact pressure on the mandibular surface decreased to 3.6% and 2.9% of the body surface respectively when the detonator was injured. The impact acceleration of the skull was reduced to 1 / 8,1 / 6; comminuted fractures occurred when the canine mandibular strain reached 113 75 με. Conclusion: This model is the standard maxillofacial explosive injury animal model.