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颌面部爆炸伤动物模型的建立及生物力学特性的初步研究 被引量:3

Establishment of animal model with blast injury in maxillofacial region
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摘要 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 estabish an animal model with blast injury in maxillofacial region and to study the biomechanical property of the model.Methods: Spherical explosive at different distances was used to make wound in maxillofacial region in dogs. The pressure on tissue at different level, the variation of horizontal acceleration and strain of the mandibular and temporal bone were dynamically measured.Results: About 3.5 cm×3.0 cm soft tissue defect and madibular splintered fracture occurred in maxillofacial region when the spherical explosive exploded on the surface of the dog's face and the animal survived. The pressure on mandible was respectively 3.6%?2.9% of the surface of dog's face when the spherical explosive exploded 0 and 1.00 cm away from the dog's face while the ratio of horizontal acceleration of cranium to mandibular was 1/8?1/6. Splintered fracture occurred in mandible when the mandibular strain was 11 375 με.Conclusion: The model can be applied as an animal model with blast injuries in maxillofacial region.
出处 《实用口腔医学杂志》 CAS CSCD 北大核心 2002年第3期241-243,共3页 Journal of Practical Stomatology
基金 军队“十五”指令性课题,项目编号01L075
关键词 颌面部爆炸伤 动物模型 生物力学特性 Jaw Face Blast injury Aminal model biomachanics
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