What is the cause of incomplete enamel development of my baby's front teeth

There are many reasons for incomplete enamel development of baby incisors. The most common ones are hypothyroidism, vitamin and trace element deficiency, periapical abscess, tooth trauma, congenital metabolic disease, hemolytic anemia, mother infected with rubella virus during pregnancy, etc. All of the above reasons may lead to functional disorders of enamel organs, resulting in abnormal structure of some parts of enamel, causing incomplete enamel development. After the tooth shows enamel development, not only the color will change, but also the hardness will decrease, and it will be sensitive to cold, hot, acid and sweet stimuli, and may even show pain, so it needs early treatment.