Slow teething in babies may be caused by genetic factors, lack of nutrition or diseases such as pituitary dwarfism. 1. Genetic factors: If the elders in your family have been slow in teething, it may cause your baby to be slow in teething due to the influence of genetic factors. 2. Nutritional deficiencies: Calcium is an important component of teeth, and a lack of calcium in babies may lead to slow teething. Vitamin D can promote the absorption of calcium. Lack of vitamin D will slow down the absorption of calcium, which in turn will affect the growth and development of baby teeth. 3. Pituitary dwarfism: Pituitary dwarfism is mainly caused by the lack of growth hormone, the lack of growth hormone secretion, slowing down the baby’s growth and development, which may lead to slow teething. If your baby is slow in teething, it is recommended that you take your baby to the hospital for a complete examination to determine the cause of slow teething. If your baby’s slow teething is caused by a disease, you need to take appropriate treatment under the guidance of your doctor.