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本文将临床诊断为深龋拟作活髓切断的74例乳磨牙，作了牙髓血象和组织病理学检查。结果为：牙髓血涂片白细胞分类中淋巴细胞高于40％的有58例（78．4％），冠髓组织病理为不同程度慢性炎症的有61例（82．4％）。表明临床诊断为深龋的乳磨牙，绝大多数冠髓已为慢性炎症表现。本研究结果对了解乳牙深龋的牙髓状态及治疗方法的选择和用药具有临床指导意义。
In this paper, 74 cases of molars with clinically diagnosed as deep mortal placenta resection for pulpotomy were made, and the pulp blood and histopathological examination were performed. The results showed that there were 58 cases (78.4%) in which the number of lymphocytes in the pulp blood smear leucocyte group was higher than 40% and 61 cases (82.4%) in the chronic coronaria tissue pathology with different degrees of chronic inflammation. Show that the clinical diagnosis of deep deciduous molars, the vast majority of coronal has been a chronic inflammation. The results of this study is of clinical significance in understanding the choice of dental pulp and treatment of dental caries in deciduous teeth.