Obturation technique to treat hemorrhea following pelvic fracture .
填塞技术治疗骨盆骨折大出血。
Summary : the purpose of root canal preparation is complete removal of necrotic tissue , bacteria and byproducts , dentin debris , and the establishment of an ideal shape for obturation of the root canal system .
With the rapid improvement of technical desires for aerodynamic missile system , many abuses of the test system architecture in present such as obturation of communication , waste of resource , inconveniences of manipulation have emerged gradually in applications .
