AP PSYCHOLOGY

Detailed explanation-1: -Typically, the first teeth to come in are almost always the lower front teeth (the lower central incisors), and most children will usually have all of their baby teeth by age 3.

Detailed explanation-2: -Babies are usually born with 20 baby teeth (also known as primary teeth). They start to come through the gums at about 6 months and all the teeth have usually appeared by the time the baby is 2 to 3 years old. This process is called teething.

Detailed explanation-3: -While every child is different, the primary teeth begin to come in between the ages of 6 and 12 months. Most of the primary teeth (baby teeth) will have erupted by 33 months. Girls tend to have their teeth come in before boys.

Detailed explanation-4: -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.

Detailed explanation-5: -bottom incisors (bottom front teeth) – these are usually the first to come through, usually at around 5 to 7 months. top incisors (top front teeth) – these tend to come through at about 6 to 8 months. top lateral incisors (either side of the top front teeth) – these come through at around 9 to 11 months.