论文部分内容阅读
作者研究了自1974年以来的179颗外伤牙,在伤后不同阶段测定牙髓活力和拍X线片进行观察评定牙髓状况。一旦牙齿有症状或有明显牙髓坏死表现,即拔髓,做成切片,光镜下观察。结果表明外伤后牙髓的预后有显著差异,这取决于外伤类型和程度、患者年龄、患牙本身状况等。本研究将牙髓预后分为3类:①牙髓预后极差79例,外伤后数日至2个月内出现牙髓坏死,皆因大部分冠折及各型脱位所致,都需作牙髓治疗。②牙髓预后一般27例,外伤后约18～24个月牙髓
The authors studied 179 traumatic teeth since 1974, measured pulp vitality at different stages of injury and photographed X-ray films for evaluation of pulp status. Once the teeth have symptoms or obvious performance of pulp necrosis, that is, the pulp, made slices, light microscopy. The results show that the prognosis of traumatic pulp after significant differences, depending on the type and extent of trauma, the patient's age, the patient's own condition and so on. This study divided the pulp prognosis into three categories: ① pulp poor prognosis in 79 cases, a few days after trauma to 2 months of pulp necrosis, are due to most of the coronaries and dislocation caused by all need to be Endodontic treatment. ② pulp prognosis in general 27 cases, about 18 to 24 months after trauma dental pulp