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Permanent Teeth Eruption Chart: Ages 6 to 21
· Dr. Navreet Sidhu · Medically reviewed by Dr. Lee Wu
Permanent teeth usually begin appearing around age six with the first molars or lower front teeth. Incisors, canines, premolars, and second molars then emerge across childhood and early adolescence.
Permanent Teeth Eruption Chart: Ages 6 to 21
Permanent teeth usually begin appearing around age six with the first molars or lower front teeth. Incisors, canines, premolars, and second molars then emerge across childhood and early adolescence. Wisdom teeth, when present, develop later and may erupt in the late teens or adulthood—or may never erupt at all.
A practical eruption timeline
The first permanent molars often erupt behind the last baby molars without replacing any tooth, which is why families sometimes mistake them for temporary teeth. Lower central incisors commonly appear around the same period. Other incisors follow, then the sequence becomes more variable as baby canines and molars make way for permanent canines and premolars. Second permanent molars generally arrive in the early teen years. Third molars, commonly called wisdom teeth, have the widest range and are not present in every person.
Why order matters more than an exact birthday
Eruption charts show population averages. Genetics, sex, growth pattern, early loss of a baby tooth, crowding, extra teeth, and the position of a developing tooth can change the schedule. The upper canines are especially important to monitor because they travel a long eruption path and can become displaced. A tooth that is a little early or late is not automatically abnormal. A persistent difference from the matching tooth on the other side may be more informative than age alone.
How dentists monitor the mixed-dentition years
Between roughly ages six and twelve, baby and permanent teeth share the mouth. The pediatric dentist tracks eruption, enamel quality, space, bite development, hygiene around newly erupted molars, and whether permanent teeth are following expected paths. An orthodontic evaluation can add information about jaw relationships and crowding. Images are selected according to clinical need; they may show teeth that are developing under the gum, missing, extra, blocked, or angled in a way that affects timing.
Protecting newly erupted permanent teeth
New molars can be easy to miss because they arrive at the very back and may remain partly covered by gum while erupting. Their grooves can retain plaque, and their enamel benefits from careful brushing with fluoride toothpaste. A dentist may discuss sealants based on anatomy and cavity risk. During this transition, parents often need to continue checking brushing even when a child can handle the toothbrush independently. Orthodontic appliances, sports, and diet can add new cleaning or protection needs.
When to contact the dental team sooner
Contact the dental team when a permanent tooth is not appearing long after its partner, a baby tooth remains while the permanent tooth is erupting elsewhere, there is swelling or pain over an unerupted tooth, or a tooth seems to be emerging far outside the dental arch. These findings do not always require treatment, but they deserve an individualized look.
Questions parents often ask
Are six-year molars baby teeth?
No. First permanent molars usually erupt behind the baby teeth and do not replace a primary tooth. They are meant to remain for life, so early prevention is important.
When do children lose all their baby teeth?
Many children lose the last primary teeth during the early teen years, but timing varies. The second baby molars and upper canines are often among the later teeth to be replaced.
Does every teen get wisdom teeth?
No. Some people never develop one or more third molars, and others have them but they do not erupt. An evaluation can determine what is present and whether monitoring is needed.
A practical next step
The best next step is rarely a search result — it's a few minutes with someone who can see your child's teeth. If something here raised a question, call (201) 345-3637 and we'll sort it out with you.
Sources
- American Academy of Pediatric Dentistry, Reference Manual of Pediatric Dentistry
- American Dental Association, MouthHealthy patient education
- American Association of Orthodontists, patient education
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