POOJA KOTHARIMom of a 8 yr 5 m old boy2 years agoA. The average child has their full set of 20 primary teeth by the age of 3 years. Between the ages of about 6 and 7 years, the primary teeth start to shed and the permanent teeth begin to come through. By the age of about 21 years, the average person has 32 permanent teeth – 16 in the upper jaw and 16 in the lower jaw.There is no exact amount of time that has been identified for how long it takes for a tooth to cut through, but most professionals have estimated that it can emerge anytime between 1-7 days per tooth.An individual tooth will usually only cause discomfort for a few days at most, but it can take longer for some babies. The whole teething process is usually complete by the age of two to three.
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