It is very common and normal for 7 month old babies not to have teeth, although it is conventional to say that babies start teething at around 6 months, there are always children who develop fast and children who develop slow, accordingly some children develop a few months earlier and some a few months later, which is normal in clinical practice. Clinically, there are many children who do not teethe at 7 months of age, and even some of them do not teethe for a longer period of time, which is not a big problem. Clinical judgment after 1 year of life still do not have teeth, before it is considered to be more serious late eruption, then you can for the child to carry out examinations to check whether the child has a congenital disease, or genetic disorders. In addition, it should be noted that even if the child does not have teeth, there is currently no good clinical treatment for late eruption.