The baby ten months no teeth, may be physiological factors, at this time is normal; may also be a lack of calcium and other nutrients caused by the lack of pathological phenomena, is not normal. 1. Physiological factors: the child is usually between 4 and 10 months of teething, more than 13 months without teething is considered to be delayed teething, so the baby ten months has not grown teeth, it may be normal. 2. Nutrient deficiency: The normal eruption of teeth requires a variety of nutrients, such as vitamin D, calcium, etc. If the baby lacks the appropriate nutrients, it may lead to delayed teething, accompanied by increased night sweats, crying, easy to startle and other phenomena. If your baby is not teething at 10 months, along with other symptoms, we recommend that you seek medical attention to identify the cause and cooperate with your doctor for treatment if necessary.