Primary Tooth Eruption and Loss

August 22, 2022

Primary Tooth Eruption and Loss

At the beginning of the year, my family welcomed a new baby boy into it, which had me thinking about what I need to remember about babies.  One thing that I have wondered is  “when will my baby get teeth?” It has been almost three years since I had to worry about watching for those first two teeth to start making their way through my babies gums, and I just couldn’t remember when babies start getting their teeth.

When a baby is born they already have their 20 primary (or baby) teeth mostly developed just below their gums in their jaw.  Your sweet baby will have their teeth come in during the first 2 ½ years of their life.  If you have had children before you are all too familiar with that dreaded teething, when baby’s teeth are pushing up through their gums.  This can be very uncomfortable for your baby and can make them very agitated.  Some kids are not as sensitive to their teeth coming in. By the time your new baby is 6 months old, you may begin to see the signs of their first two baby teeth coming in on the bottom, these are the lower central incisors.  These first two teeth typically show up between 6 and 10 months, so if your babies 6th month has come and gone, don’t get too worried because he still has a few months for them to come in.  At 8 months your baby should be getting ready for the Upper central incisors to come in as well.  Some babies have all four come in at the same time, which could be good or bad for Mom and Dad.  Good on the side that the teething is coming all at once, or bad because your baby is very uncomfortable with all four teeth coming in.  More likely though, your baby will sprout those first four teeth at different times.

The next teeth that you should see coming in would be the lateral incisors and the canines (or cuspid – these are the pointy looking teeth).  Their upper lateral incisors will come in first, usually between 9 and 13 months, then the lower between 10 and 16 months.  Those pointy canine teeth will shortly follow between 16 and 23 months for both the upper and lower.  As a general rule of thumb, the upper teeth will come in first; those lower central incisors are the exception because they are the first two teeth to come in.  Once these teeth are in you probably are enjoying your babies toothy smile, almost as much as you did when they just had their first four teeth.

By the time your baby has had their first birthday, they should have the majority of their baby teeth.  In some cases though there are a few teeth that are late bloomers and are taking their time coming in.  After babies first birthday they should be getting ready to sprout their first year molars!!  This is exciting because that means your baby can try new food to use those new teeth for grinding.  By the time your baby turns 2 and is officially a toddler (which makes every mommy’s heart sad and happy at the same time), they should be getting their two-year molars.  Don’t expect these as soon as your toddler turns two, it can take anywhere from 23 to 33 months for these teeth to come in.  Remember how I said that the lower central incisors are the exception for coming in before the top teeth?  Well the same goes for the lower second molars, they usually come in before the top one’s do.   Once the top second molars come in your baby/toddler has all 20 of their primary teeth.

These baby teeth won’t stay forever, however it is very important to care for them like you would permanent teeth.  If you need a refresher on how to care for your baby’s primary teeth, look back at our previous post on Flossing, Toothbrushes and when you should take your child in for their first dental visit.

When your toddler is no longer a toddler and is a kid that may or may not drive you crazy when it comes time to brush and floss, you can expect them to start losing their baby teeth.  This usually starts happening around the age of 6, and by the time your child is 12-years old they should have lost all of their baby teeth and have their adult teeth.

If you have any concerns about your child’s teeth coming in on time please ask your child’s dentist.  They will be able to provide you with information, and give your child an exam to see if there is anything you should be worried about.  Remember to always brush and floss your child’s baby teeth, as it will help pave the way for a healthy smile when their adult teeth start to come in.  Also if you have any other questions, please visit the links below.


  1. Eruption Charts – Mouth Healthy
  2. Tooth Eruption – Primary Teeth
  3. Tooth Eruption – Permanent Teeth

Ready to bring your child’s best smile forward?