n.[医]牙髓炎
Conclusion Pulpal exposure can find the natural development of pulpitis, and it is one of the methods to establish the model of rat experimental pulpitis. 结论单纯开放法可观察到牙髓炎的自然发展过程，是建立大鼠实验性牙髓炎动物模型的方法之一。
