5 Possible Reasons Your Child’s Permanent Teeth Aren’t Coming In

Reasons Your Child's Permanent Teeth Aren't Coming In

Every new parent waits in anticipation for the first baby tooth to appear. So if it doesn’t happen, it’s normal for parents to start wondering whether something’s wrong. The same level of concern also affects parents when a kid is six, eight or ten years old and the child’s permanent teeth aren’t coming in, despite losing baby teeth. While there are a number of reasons why this could happen, in most cases it’s normal and should not be a major concern.

The amount of time it takes for permanent teeth to erupt in kids varies greatly. In some cases, they may actually be present as baby teeth fall out, while in some cases, they may take months to come in. If no teeth erupt at all, it could be an indication of more advanced problems which may require the attention of your family dentist. However, before you start worrying, here are some reasons why your child’s teeth are not coming in:

Not Enough Space for Them to Grow Yet

This is perhaps the most common reason as to why your kid’s permanent teeth may not be developing or erupting as expected. When primary teeth have fallen out but were smaller than the adult teeth that are trying to grow, there is a high chance that there is not sufficient space for the new teeth to erupt. If you look at most kids, they have spaces between their baby teeth, which allows for the unhindered growth of permanent teeth.

However, some kids may not have those natural spaces to allow the growth of adult teeth. If this is your case, visiting a professional orthodontist to have the surrounding baby teeth removed to allow more room for your child’s permanent teeth to grow with no restrictions is wise. Braces can also be used to create more space between baby teeth. If such solutions don’t result in the eruption of permanent teeth, your pediatric dentist may recommend doing a children’s dental x-ray so as to identify any issues that may not be detectable during a visual examination.

It Could Be a Genetics Issue

If your child’s permanent teeth aren’t coming in, it could be due to genetics. In fact, dental experts note that there’s a 80% likelihood that the characteristics of your teeth development in early childhood will likely be experienced in your children. Still not convinced? If you ended up needing dental braces to create sufficient space for your adult teeth to grow, your kids will likely need them too. You may not be aware of your genetic history, but you can always ask your parents or people who knew you in childhood.

When it comes to dealing with genetic tooth development problems, there is nothing much you can do about them, rather than being patient. If it’s an issue that is of great concern to you and your spouse, then you should see a doctor. You should be aware that tooth eruption may be delayed or inconsistent in kids with certain developmental issues, like genetic disorders, particularly Down syndrome, as well as in kids with dental anomalies due to hereditary, traumatic, systemic or local factors.

Permanent Teeth Could Be Growing in the Wrong Way

Another reason why your child’s teeth are not coming in could be due to adult teeth growing in the wrong direction. This is one of the major reasons for permanent tooth development delays. When a permanent tooth fails to erupt where a baby tooth was, there’s a chance that your kid will have problems. You’ve most likely heard about cases where permanent teeth grow behind baby teeth. It sounds crazy, but up to 1 in every 10 kids ends up with this dental problem.

It’s important to understand that this only affects one or two teeth, usually the top or bottom incisors. In other cases, a tooth may not grow in a straight way, causing great concern for parents. Luckily, this dental problem can be fixed to ensure permanent teeth get back to the correct path of eruption. If removing a baby tooth doesn’t provide a solution to why your child’s permanent teeth aren’t coming in, consulting an orthodontic expert for treatment may help provide a solution.

A Gender Issue

There is a huge difference in the general development of both girls and boys, and this applies in tooth development too. Just as girls reach puberty and experience sexual changes earlier than boys, they also tend to develop permanent teeth a bit earlier than boys do. In fact, studies have shown that girls start losing their baby teeth even six months earlier than boys. While it’s the norm for parents to compare their kids’ development, gender may be the issue in your situation.

Nutrition Plays a Big Role

What you’re feeding your kid may impact their permanent teeth development in one way or another. To ensure correct development, ensure your children get enough nutritional calcium and other important minerals that will keep their teeth strong enough to push through the gums. Kids at a young age can be picky eaters, but that doesn’t mean you neglect nutritional value. Avoid sugar-rich snacks and drinks and opt for a healthy diet.

Nutritional diet for kids

Your kid developing the first permanent tooth may put a smile on your face, but you’ll need to take necessary dental care precautions to ensure he or she takes good care of their teeth. For instance, you can keep your child’s new adult teeth in their best shape through dental sealants. These will help keep bacteria from getting stuck in tooth pits and fissures, preventing tooth decay.


If you’re still worried that your child’s permanent teeth aren’t coming in, there could also be other reasons like the height and weight of your child, impacted teeth, supernumerary teeth, and others. While delays in adult teeth development are caused by issues that can be easily rectified, discussing your concerns about your child’s permanent tooth development is highly recommended.

If you still have concerns or need any form of dental treatment that involves pediatric sedation dentistry for kids, Children Sedation Dentist offers you the best possible oral health care. Contact our office today.

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