Misconception 1: Some patients search online to find out their disease before coming to the hospital, and then even find a good treatment plan, saying: I have deep caries, you can fill it for me, no need to do treatment. However, it is impossible for the patient to know the degree and depth of deep caries, which can only be known after the doctor removes the caries, and it is the doctor’s judgment whether to fill the tooth directly or to do the treatment. So the reasonable application of information is the most critical. Outpatient misunderstanding 2: Some patients said I had root canal treatment in outside hospital, so you can fill me directly. The result is that after the film is taken, there is nothing in the root (the filling will show a higher density). After explaining to the patient and pulling out other patients’ films to explain, the patient still asks for a direct filling, and the correct treatment plan will be informed to the patient, but the choice is up to the patient. Trust in the doctor is especially important. Outpatient misconception 3: Some patients say I just have this toothache, you treat this tooth for me. However, in the state of pulpitis, often because the nerve reflexes are connected, the patient will misjudge and through the doctor’s examination, the corresponding diseased tooth will be identified. Do not rely on your own feelings and do not trust the doctor.