Roush J K, Wilson J W
Department of Surgical Sciences, School of Veterinary Medicine, University of Wisconsin-Madison 53706.
Vet Surg. 1989 May-Jun;18(3):190-6. doi: 10.1111/j.1532-950x.1989.tb01069.x.
Osteotomies were created in the left body of the mandible of nine dogs and immediately stabilized with either a six hole dynamic compression bone plate or an intramedullary pin. Cortical bone healing and vascular supply were evaluated at weeks 2, 5, and 10 by microradiography, microangiography, and correlated histology of selected mandibular slices. Perforating arterioles from the buccal mucosa maintained vascular supply to rostral mandibular segments. The mandibular body rostral to the osteotomy site and caudal to the canine tooth suffered an interruption of vascular supply that was replaced by a temporary extraosseous supply during healing of the osteotomy. Intramedullary pin placement resulted in destruction of rostral teeth. There was an inflammatory response around the rostral portion of all intramedullary pins. Osteotomy sites involving tooth roots resulted in no disruption of the normal vascular or neural structures of the tooth pulp.
在9只狗的下颌骨左侧体部进行截骨术，并立即用六孔动力加压接骨板或髓内针进行固定。在第2周、第5周和第10周，通过微放射摄影、微血管造影以及对选定下颌骨切片进行相关组织学检查，评估皮质骨愈合和血管供应情况。来自颊黏膜的穿通小动脉维持了下颌骨前段的血管供应。截骨部位前方至犬齿后方的下颌骨体部血管供应中断，在截骨愈合过程中被临时的骨外供应所取代。髓内针的放置导致前段牙齿受损。所有髓内针前段周围均有炎症反应。涉及牙根的截骨部位未导致牙髓正常血管或神经结构的破坏。
