Get out of the misconception: Some babies only get their first tooth when they are 1 year old, so parents don’t have to worry about it or compare it with other children. However, if a child is over 1.5 years old and has not yet developed his or her first tooth, a dental check-up is recommended. It is normal for baby teeth to come in as early as 4 months or as late as 12 months. There are individual differences in the timing of teething, and the age at which teething begins is related to family history. Babies with severe vitamin D deficiency rickets will also have late teething. If the baby has been taking 400 IU of vitamin D daily since 2 weeks of life, has good nutritional status, and is growing normally, late teething cannot be attributed to calcium deficiency due to vitamin D deficiency. If your baby is not taking vitamin D, you should take it as soon as possible at the dose of 400 IU per day. What is the order of baby’s teething? The order of teething is generally mesial incisors – lateral incisors – cuspids – first molars – second molars, but the order of baby’s teething is not necessarily in pairs, many are erupted one by one, and there are also jumping eruptions. The order, timing and number of teeth eruption varies from child to child due to genetic reasons. Some babies may have their lateral incisors first, so parents should not worry that this is not normal. Babies bite and drool when they are teething When babies are teething, their gums are uncomfortable and they will pick their teeth with their little hands, and they may bite their hands, bite their little fists, and bite toys. Parents can also wash their hands and wrap their fingers in gauze dipped in warm boiling water to gently massage the child’s gums to relieve pain. Baby’s toys should be cleaned frequently, and the glasses and buttons worn by dolls should be checked to see if they are secure. In addition, babies also love to drool because of teething. Drooling stimulates the skin around the mouth and chin, and can easily cause skin or eczema, or even break out. Parents can use a warm towel to wipe the area and apply some moisturizer when the baby is sleeping. After the baby is 1 year old, the drooling situation will get better. Warm tip: After the baby is 1.5 years old, you can use a small toothbrush to brush your teeth, first with a toothbrush dipped in water, when the brushing posture is more correct, then start to brush your teeth with a toothbrush dipped in swallowable toothpaste.