论文部分内容阅读
关于牙槽骨内根折的预后及治疗,存在着不同的观点。作者汇集了50多年来的多篇文献,对这些病例随访观察1～40年,将发生在恒牙的有牙槽骨内根折与没有根折的外伤牙之结果进行比较后认为,前者的牙髓有较强的修复力或成活率。文献指出,在无牙槽骨内根折并受到较大的外伤时,牙髓坏死率较高。牙髓坏死主要取决于外伤的严重程度,此外还包括根尖发育程度、牙折的位置、牙折片的移位程度、冠部碎片的松动度等,牙折愈接近根尖预后愈好。然而,如果牙颈部的松动度经2
There are different perspectives on the prognosis and treatment of alveolar root fracture. The author has collected more than 50 years of literature, the follow-up of these cases observed for 1 to 40 years, will occur in permanent teeth of the alveolar root fracture with no root fracture of the results of the comparison of traumatic teeth that the former Pulp has a strong repair or survival rate. The literature points out that there is a high rate of dental pulp necrosis in the absence of alveolar root fracture and greater trauma. Pulpal necrosis mainly depends on the severity of trauma, in addition to including the degree of apical development, the position of the tooth fold, the degree of displacement of the tooth fragments, the degree of loosening of the crown fragments, the better the near the root tip prognosis. However, if the degree of cervical neck loosening 2