牙体病和牙髓病是口腔内科门诊中的常见病。在诊治过程中,首先遇到的问题是诊断;过去,我们采用Enler牙髓病分类,且不说临床诊断和病理诊断符合率不高,就是不诊断之前,心中也没有诊断标准,感到模糊不清。对同一病例的诊断,各医师间多有差异。其它牙髓病分类亦有此类或其它缺点,均不适于临床应用。史俊南教授提出的牙髓病分类和诊断,不仅临床和病理符合率高,而且对选 Dental and endodontic diseases are common diseases in oral medicine clinics. In the diagnosis and treatment process, the first problem encountered is the diagnosis; in the past, we use Enler endodontic classification, not to mention the clinical diagnosis and pathological diagnosis in line with the rate is not high, that is, before the diagnosis, the heart no diagnostic criteria, do not feel fuzzy clear. The diagnosis of the same case, there are many differences between the physicians. Other types of endodontic diseases also have these or other disadvantages and are not suitable for clinical use. Professor Jun-nan Shi classification and diagnosis of pulp disease, not only clinical and pathological coincidence rate, and the election