Imagine checking your child’s mouth and seeing two rows of teeth, one growing right behind the other. It can be surprising, even a little scary, especially if the baby tooth hasn’t moved while a new adult tooth is coming in. This is often called “shark teeth”, and while it might seem unusual, it’s actually a common situation that many kids experience. Understanding why a tooth is growing behind a baby tooth can help you make the right decision about whether to wait or schedule a dental appointment. In this blog post, we will explore the common causes of shark teeth in kids, when to seek dental care, and how to ensure there’s enough room for the permanent tooth to grow in properly.
What Does It Mean When a Tooth Is Growing Behind a Baby Tooth?
When a tooth is growing behind a baby tooth, it means that a permanent tooth has started to erupt before the primary tooth has fallen out. This often creates a double row of teeth, with the new adult tooth coming in behind the baby tooth, instead of replacing it directly. This condition is commonly known as “shark teeth” because it looks like a row of extra teeth, similar to a shark’s mouth. It usually happens in the lower or upper front teeth and is most noticeable when the baby tooth is not loose or hasn’t come out naturally.
As the permanent teeth begin to push through the gum line, they’re supposed to make room by loosening the baby teeth. But sometimes the roots of the baby tooth don’t dissolve properly, so the permanent teeth grow in behind, leading to a situation that’s often concerning for both kids and parents.
Why Does a Tooth Grow Behind Baby Teeth?
If you notice a tooth growing behind your child’s baby tooth, you might wonder why this is happening. This condition, often called “shark teeth,” can look unusual, but it usually has a simple explanation. Below are the most common reasons why permanent teeth may start to grow in behind baby teeth instead of replacing them in the usual way.
- Delayed Baby Tooth Loss: One of the most common reasons for a tooth growing behind baby tooth is that the baby tooth hasn’t become loose or hasn’t fallen out naturally. This prevents the permanent tooth from taking its proper place and causes it to grow in behind the baby tooth instead.
- Lack of Space in the Jaw: When a child’s jaw is too small or crowded, there might not be enough room for permanent teeth to come in properly. As a result, permanent teeth may take an alternate path and erupt underneath the baby tooth or behind baby teeth, creating a double row of teeth that’s often referred to as “shark teeth.”
- Early Eruption of Permanent Teeth: Sometimes, permanent teeth start to come in earlier than expected, especially in the lower and upper front teeth. If the baby tooth’s roots haven’t dissolved in time, the new teeth may grow in the wrong position.
- Stubborn Baby Teeth: In some cases, the roots of the baby tooth are too strong or fully formed, making the baby tooth difficult to get loose on its own. These stubborn baby teeth can block the path of the child’s permanent teeth, forcing them to grow in behind.
- Moderate to Severe Crowding: When multiple permanent teeth are trying to erupt at once, especially in a small jaw, crowding can occur. This crowding may force new teeth to find space wherever possible, even if that’s behind the baby tooth.
Is It Normal for Permanent Teeth to Grow Behind Baby Teeth?
It’s actually quite common to see a tooth growing behind a baby tooth, especially when the permanent teeth are coming in before the baby teeth fall out. This often happens in kids around the ages of 5 to 7 and is usually nothing to worry about. In many cases, the baby tooth will get loose and fall out naturally, allowing the new tooth to move into place. However, if the baby tooth isn’t loosening or your child has two rows of teeth for an extended time, it’s a good idea to visit a pediatric dentist.
Signs to Watch For When a Tooth Is Growing Behind a Baby Tooth
- A visible second row of teeth behind the baby teeth
- The baby tooth is not loose, even though the permanent tooth is coming in
- Your child’s teeth look crowded or start to overlap
- Chewing becomes uncomfortable, or your child favors one side of the mouth
- The baby teeth don’t fall out on their own after a few weeks
- Your child complains of pressure or soreness in the gums
- You notice the tooth growing behind the baby tooth is tilted or misaligned
- A dental X-ray shows that the permanent tooth is erupting incorrectly
What to Do If Your Child Has Shark Teeth?
If you notice a tooth growing behind a baby tooth, don’t panic; this is usually easy to manage. Start by watching the baby tooth closely to see if it begins to wiggle or fall out naturally. You can encourage your child to wiggle the baby tooth several times a day, especially when the permanent tooth is coming in behind their baby tooth.
However, if the baby tooth isn’t loose or shows no sign of coming out, it’s best to schedule an appointment with a pediatric dentist. The dentist may recommend a dental X-ray to determine if the baby tooth should be extracted and whether the permanent adult tooth has enough space to move into place.
When to See a Pediatric Dentist?
You should schedule a visit to a pediatric dentist if you notice a tooth growing behind a baby tooth and the baby tooth isn’t getting loose, especially when permanent teeth are coming in quickly. It’s also important to seek help if your child shows signs of crowding, discomfort, or if the teeth haven’t started to shift on their own after a few weeks.
A dentist can perform a quick exam and may use dental X-rays to give important information about the position of the tooth behind and whether the baby tooth needs to be extracted.
Can a Tooth Growing Behind a Baby Tooth Cause Problems?
In most cases, a tooth growing behind a baby tooth doesn’t cause serious issues, especially if the baby tooth gets loose and falls out on its own. However, if the permanent teeth coming in are blocked or crowded, it can lead to alignment problems, discomfort, or difficulty cleaning between teeth.
When the baby tooth doesn’t fall out naturally, the tooth behind may grow at an angle or shift out of place, which might affect your child’s bite or lead to future orthodontic needs.
How Dentists Treat Teeth Growing Behind Baby Teeth
If your child has a permanent tooth growing behind a baby tooth, the dentist will check how loose the baby tooth is, how the new tooth is coming in, and whether the teeth look crowded. In most cases, dental X-rays give important information to help the dentist decide what to do next. Below are the most common ways dentists treat this condition to make sure your child’s teeth come in safely and correctly:
- Monitor the Tooth: If the baby tooth is already loose and the permanent tooth is coming in correctly, the dentist may recommend waiting a few weeks to let the baby tooth fall out naturally.
- Tooth Extraction: If the baby tooth hasn’t loosened or is blocking the permanent tooth, the dentist may recommend extracting the baby tooth to guide proper alignment.
- Referral to an Orthodontist: In cases of crowding or when teeth grow at awkward angles, your child may be referred to an orthodontist to plan for future alignment.
Tooth Extraction
If a tooth is growing behind a baby tooth and the baby tooth isn’t loose, the dentist may recommend removing it to help the permanent tooth move into place. During the procedure, the dentist gently numbs the area and uses special tools to carefully remove the baby tooth. The process is usually quick and safe, and most kids feel only mild discomfort afterward. Once the baby tooth is extracted, the teeth will start to shift naturally, giving the permanent tooth growing in behind the space it needs to align properly.
Orthodontic Evaluation
If your child has teeth crowding, especially when permanent teeth are growing in behind their baby teeth, the dentist may suggest an early orthodontic evaluation. This is usually done around age 7 when baby teeth are still present, but permanent teeth have started to erupt. If needed, the orthodontist will check the spacing and alignment and decide if your child may need braces later. In some cases, early treatment can reduce the need for more complex orthodontic work in the future.
How to Prevent Problems with New Teeth Eruption?
Helping your child develop strong oral habits early can make a big difference in how their permanent teeth erupt. Here are some easy and effective ways to support healthy tooth development and avoid future dental problems:
- Schedule Regular Dental Checkups: Routine visits help the dentist track tooth growth and spot issues, such as delayed eruption or teeth that don’t become loose.
- Watch for Delayed Baby Tooth Loss: If a baby tooth isn’t falling out on time or stays in place while the new tooth erupts, the dentist may need to remove it.
- Maintain Daily Oral Hygiene: Encourage your child to brush twice a day and floss to prevent cavities in baby teeth and lower the risk of baby tooth infection.
- Teach Good Dental Habits Early: Make brushing fun when teaching dental hygiene to preschoolers, so they enjoy taking care of their teeth.
- Avoid Habits That Harm Teeth: Cut back on sugary snacks and drinks to protect your child’s oral health and prevent early decay that might affect how teeth come in naturally.
- Talk to the Dentist If You Notice Anything Unusual: If your child is older and hasn’t lost any teeth, or you see crowding or discomfort, check in with your dentist early.
Conclusion
Seeing a tooth growing behind a baby tooth, often referred to as “shark teeth”, can be surprising for any parent, but it’s usually nothing to panic about. In most cases, this happens when a baby tooth isn’t loose enough to fall out as the permanent tooth begins to come in. Understanding the common causes, such as delayed baby tooth loss, jaw crowding, or early eruption, can help you respond calmly and take the right steps to support your child’s dental health.
It’s important to keep an eye on your child’s teeth during this phase. If the baby tooth is not getting loose, if the new tooth is growing in behind their baby teeth, or if the teeth look crowded, it’s best to schedule a visit with a pediatric dentist. The dentist may take dental X-rays to check the position of the tooth behind and decide whether the baby tooth should be extracted. In some cases, early orthodontic evaluation may also be recommended, especially if teeth crowding becomes a concern as your child gets older.
To reduce the chances of complications, help your child build good oral habits early. Regular dental checkups, daily brushing and flossing, and watching for signs like slow baby tooth loss or discomfort can make a big difference. When treated early, shark teeth usually resolve smoothly, and your child’s teeth will start to align naturally, leading to a healthy and confident smile.
