Patient: My son is more than 10 months old, drooling for several months, height and weight and other aspects of normal, but now how still teething, is anxious how to do …… experts: not anxious, wait slowly. I’m sure it will grow. If you are not sure, come to our hospital and see us once. I’ve had several little patients who were teething normally at 15 months. Shen Lixiao, Department of Child and Adolescent Health, Shanghai Xinhua Hospital Patient: Thank you, doctor! What is the relationship between teething and calcium supplementation, my child cod liver oil eaten, calcium also supplemented … just can not understand not to grow teeth …… experts: calcium deficiency is not necessarily not teething, teething is not necessarily not calcium deficiency. The two are not necessarily related. Patient: Then ask Dr. Shen, what factors are related to the late or early teething ……? Expert: I can only say that it may be related to genetics, but also has some connection with nutrition. Of course really no teething is also related to disease. Patient: I went to the hospital a few days ago and had a bone density test for my pediatrician, and the test came down to normal bone density, normal height and weight, what should I do if I don’t grow teeth? Specialist: Normal is good, time will prove everything, you wait patiently for 2 months. 12 can come to the clinic to see again.