牙髓炎的活髓保存治疗是一种理想的治疗方法。它能保存牙髓的防御、修复、重建等生理功能,且疗法简便。但传统的观点认为:由于髓腔及牙髓组织的解剖生理特殊条件所限,牙髓炎的直接盖髓治疗仅适用于年轻恒牙的急性牙髓炎早期阶段,所以临床上未能普遍开展。也有不少作者报告:牙髓血管并非终末型,有一定数量的侧枝循环;血液进入髓腔除通过主孔外,尚有付扎及细枝;根尖孔周围围绕着疏松结缔组织,牙髓充血时可以成为缓冲地带,因而血管不易发生栓塞。基于上述观点,我们考虑 Pulp myeloma preservation is an ideal treatment. It can save the dental pulp defense, repair, reconstruction and other physiological functions, and the treatment is simple. However, the traditional view is that due to the special anatomical and physiological conditions of medullary cavity and pulp tissue, direct pulp capping treatment of pulpitis is only applicable to the early stage of acute pulpitis in young permanent teeth, so it has not been clinically practiced . There are also many authors report: pulp blood vessels are not terminal, there are a certain number of collateral circulation; blood into the medullary cavity in addition to through the main hole, there are still pay tie and twig; apical foramen around loose connective tissue, teeth Pulmonary congestion can become a buffer zone, so blood vessels are not prone to embolism. Based on the above point of view, we consider