The formation of teeth starts in the womb. During your pregnancy, your baby has dental buds, which are the basis for the milk teeth. But only 1 in 2,000 babies are born with teeth, and the vast majority of babies will have their first teeth emerge at 4 to 7 months of age. Other babies who are slow to develop may not get their first tooth until they are over 1 year old. Premature babies may also be a few months late in getting their teeth. The last tooth (the second molar, the upper and lower teeth located in the deepest part of the mouth) usually does not begin to appear until your baby is about 2 years old. By age 3, your baby should have a full set of 20 milk teeth. So it is not abnormal for your child to have no teeth at 10 months, but the growth and development of your baby may be a little slower. At this time, parents can pay attention to observe whether the baby’s diet is normal; how is the nutritional status, whether there is a relatively thin, yellow hair or face and other malnutrition; whether the supplemental food is added correctly; whether the outdoor activities and sunshine time is sufficient, whether there is pillow baldness and other calcium deficiency performance. If everything is normal, then parents do not need to worry too much, baby teething within 1 year old are within the normal range, if the above-mentioned problems, you need to target solutions, if necessary, to the hospital for examination and treatment.