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What to Expect
Primary teeth are usually known as "baby teeth." Usually, the first primary tooth comes in (erupts) at about 6 months of age, although it can be as early as 3 months or as late as 1 year of age. In rare cases, a baby gets a first tooth after his or her first birthday. By age 3, most children have all 20 of their primary teeth.
Primary teeth usually erupt in a certain order:
Secondary, or permanent, teeth usually begin replacing primary teeth around 6 years of age. Permanent teeth erupt in roughly the same sequence as primary teeth. Usually, a permanent tooth pushes the primary tooth out as it erupts.
See a picture of the secondary teeth.
Symptoms of teething
Many times you might not know that your baby has a new tooth coming in until you see it or hear it click against an object, such as a spoon. Some babies may show signs of discomfort from sore and sensitive gums, be cranky, drool, and have other mild symptoms. These symptoms usually begin about 3 to 5 days before a tooth erupts and go away as soon as the tooth breaks through the gum.
Mild symptoms that gradually improve usually are nothing to worry about and may even be related to a viral infection or other condition. Severe or ongoing symptoms should be closely watched and discussed with your doctor.
Do not hesitate to call your doctor any time you have concerns about your child's teething. It is also a good idea to talk to your doctor if your child has unusual tooth development, such as late eruption of the first tooth. Tooth development issues usually resolve on their own or are easily treated.
eMedicineHealth Medical Reference from Healthwise
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