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.
As indicated in the baby teeth chart, children begin to lose their baby teeth by the time they are 6 or 7 years of age. By 12 years of age, they will have lost all 20 of their baby teeth to make room for their 32 permanent teeth.
Adult teeth
People can expect that between the ages of 12 and 14 a child will have lost all of their baby teeth. These will have been replaced by a full set of adult teeth. A full set of adult teeth will amount to 32 teeth in total. This includes the wisdom teeth, which grow in at the back of the mouth.
At birth people usually have 20 baby (primary) teeth, which start to come in (erupt) at about 6 months of age. They fall out (shed) at various times throughout childhood. By age 21, all 32 of the permanent teeth have usually erupted.
Some kids may lose theirs as early as five or as late as seven, which is still considered normal. The average child will have lost eight baby teeth by age eight; four front teeth on top and four front teeth on the bottom. Between 8-10 you will normally not see much loss or eruption of teeth.
All four center teeth, known as bottom and top incisors, usually fall out in the 6-8 year range. The sharp teeth beside them (called canines or cuspids) as well as the first molars leave a little later, around 9-12 years old. The second molars are often the last to go … typically in the 10-12 year range.
According to the Centers of Disease Control and Prevention (CDC), by age 50, most Americans have lost an average of 12 teeth. The full adult dentition consists of 32 teeth. That means by age 50 you can expect to have 37% fewer teeth.
Although losing baby teeth is completely normal, losing adult teeth is not. Tooth loss is far from inevitable. While time and age can cause a decline in oral health, it is not age itself that causes tooth loss and other problems.
The last baby tooth is usually lost around the age of 12, and is the cuspid or second molar.
Some adults have their third molars (wisdom teeth) or premolars extracted to relieve crowding, or the 3rd molars may not have erupted, so there may be only 24 to 28 teeth in healthy-appearing dentition. However, most adults have 32 teeth, which include: 8 incisors. 4 canines.
Most children lose their baby teeth in this order: Baby teeth ordinarily are shed first at about age 6 when the incisors, the middle teeth in front, become loose. Molars, in the back, are usually shed between ages 10 and 12, and are replaced with permanent teeth by about age 13.
Adults have 28 teeth, not including wisdom teeth. That said, adults 20-64 years of age only have 25 teeth on average, according to the National Institute of Dental and Craniofacial Research. Moreover, adults over the age of 50 only have an average of 22 teeth left.
Average Teeth Per Age Group
For Americans aged between 20 and 34, the average is just under 27 teeth (26.90) remaining. By the time you hit 49 years, you are feasibly down to 25.05 teeth on average. Once you get to 64, you are pretty average if you have around 22 (22.30) teeth still in your mouth.
Seniors 65 years and older have an average of 20.7 remaining teeth. Older seniors, Black and Hispanic seniors, current smokers, and those with lower incomes and less education have fewer remaining teeth.
There is no limit to the number of teeth you can have extracted at once. While having multiple teeth extracted during the same procedure is rare, it is sometimes the only option for patients with severe tooth decay.
People with hypodontia often keep their primary teeth longer than others, as there are no permanent teeth to replace them. Christina Hvaring's research shows that trying to retain primary teeth gives a good results.
Retained baby teeth usually fail to fall out because there was no tooth in place behind it to push it through. Most children will have lost all of their baby teeth by the age of 12, but some people will see one or two baby teeth remain in place into adulthood, in some cases the number is even higher.
Occasionally, though, some baby teeth never fall out, and for this reason, an adult tooth cannot replace it. These baby teeth that never fall out are called retained teeth, and although they are typically harmless, they can cause some dental issues.
Most children lose their last baby tooth around the age of 12. All non-wisdom teeth are typically in place around your child's 13th birthday. Wisdom teeth may wait until age 21 to make their presence known.
While many get their first set of false teeth between 40 and 49, the need to replace teeth becomes nearly universal as people age.
By age 50, Americans have lost an average of 12 teeth (including wisdom teeth). And among adults 65 to 74, 26 percent have lost all their teeth.
If your child has started losing teeth all at once, this might feel like a cause for concern, both for you and your little one. But in fact, it's a cause for celebration! Losing baby teeth is totally normal and is a major milestone for all kids.
Many parents might not remember when their teeth came in and fell out, but when it comes to your molars some of them never fall out. Many of your back molars are your very first permanent teeth, so when your child has those back teeth come in, they are the teeth that are here to stay.
If the root is not dissolved, the baby tooth will not fall out. When this happens, the new adult tooth will try to erupt anyway. This is why you sometimes see “double row shark teeth” in children's mouths. The adult tooth has erupted behind the baby tooth without dissolving the root, leaving two teeth in one space.