How many months does a baby have to teethe? What are the signs before teething? These questions are of great concern when you have a baby. There will be two sets of teeth in a person’s life, 20 milk teeth and 32 permanent teeth, and they will start to teething at 4 to 6 months, and the latest baby will have all 20 milk teeth at the age of two and a half. Baby teething rule 1, central incisor: 2 teeth in the lower jaw ( 6 months); 72 teeth in the upper jaw (7 and a half months). 2.Lateral incisors: 2 teeth in the lower jaw (7 months); 2 teeth in the upper jaw (9 months). 3.First molar: 2 in the lower jaw (12 months); 2 in the upper jaw (14 months). 4.Canine teeth: 2 in the lower jaw (16 months); 2 in the upper jaw (18 months). 5, Second milk molar: 2 in the lower jaw (20 months); 2 in the upper jaw (2 years). The lower jaw precedes the upper jaw, on the principle of going to the back. The first to start coming out is usually the lower incisor, which is named lower central incisor, then the upper central incisor, and later next to the middle incisor will grow a baby baby tooth left and right. Although it is not absolute, in principle, it is symmetrical between the left and right, and the first molars of the upper and lower jaws and the canines of the upper and lower jaws have approximately the same eruption time. Signs before teething 1. Pain: Your baby may show pain or discomfort. 2. Grumpiness: The discomfort of teeth can make your baby grumpy and cranky, especially in the first day or two of teething. 3. Red cheeks: Keep an eye out for red spots on your baby’s cheeks. 4. Drooling: The excessive saliva produced during teething can make your baby drool a lot. 5.Gnawing, chewing or biting: Put anything near your baby’s mouth and he may bite on it directly. 6.Swollen gums: Check his mouth to see if there is a little redness or swelling on the gums. 7. Restless sleep: Your baby may wake up in the middle of the night and seem irritable, even though he has been sleeping soundly before. 8. Increased body temperature: Teething can raise the body temperature slightly, so the baby may feel a little warmer than usual. What parents should do when baby is teething 1.After baby starts to teething, parents should remember not to give baby too sweet food, which is easy to induce tooth decay. 2.Theoretically speaking, baby should pay attention to cleaning after the first tooth comes out. Mother can gently wipe baby’s mouth with gauze. Another situation needs to be mentioned, some moms may say that baby will have fever when teething, which is not the case for every baby. However, it is important to be vigilant. During the first week of teething, babies cry a lot, salivate more, and especially like to bite, some babies have diarrhea and swollen gums. Parents should keep track of their baby’s fever level, pay more attention to it, and seek medical attention when they find abnormalities.