In fact, the stomatology department of the hospital is not so good. It is a small department compared with the big inside and the big outside. Not paying much attention. The risk outside the mouth is great, the difficulty is great, and the income is better than others. And a little gray income. But not as much as I thought. You can only do it in the hospital. Intra-oral cavity and periodontal cavity are the most hopeless in our field. Root canal and scaling can't achieve anything in cervical spondylosis. Maintenance is cost-effective. Because there are many patients, but it is also difficult to do. Orthodontics and plastic surgery, I think, can be regarded as one kind, because the quality of these patients is the highest, and they are often rich, so they can earn a good income without hard work. There is still a future in economically developed areas. We don't distinguish children in particular here, so it's not clear. Temporomandibular joint diseases are not developed here. Although many people suffer from this disease, it is often overlooked and the cause is complicated. Therefore, we don't have a special doctor to do this. Basically, we go to orthodontics or massage outside the mouth. Dentists are migrant workers among doctors ... dentists have their backs to the sky.