早期诊断创伤牙的牙髓损伤情况非常重要,而建立一种确定牙髓活力状况的可靠方法则大有裨益。大量事实说明,牙外伤脱位后很快发生牙髓坏死,而现有的诊断方法则难以反映出这种情况。许多病例在外伤后二年方出现明显的症状,因此确定诊断和治疗就较迟,早期确定牙髓有无活力则可防止延误治疗的危险。 Early diagnosis of traumatic dental pulp injury is very important, and to establish a reliable method of determining the vitality of the dental pulp is of great benefit. A large number of facts show that dental dislocation soon after dental pulp necrosis, and the existing diagnosis is difficult to reflect this situation. Many cases of obvious symptoms in two years after trauma, so to determine the diagnosis and treatment later, early determination of dental pulp vitality can prevent the risk of delay in treatment.