An open bite happens when a child’s front or back teeth do not touch properly when they bite down. Instead of the top and bottom teeth meeting evenly, a visible gap remains, even when the jaw is fully closed.
If you have noticed this in your child’s smile, take a breath. Open bites are common in growing children, and many resolve on their own once a habit stops or the bite continues to develop. Others benefit from an early orthodontic evaluation, especially when the pattern involves jaw growth rather than just a habit.
Families across Lancaster, Ephrata, and Lititz bring their kids in for bite checks at all ages, from toddlers who still use a pacifier to school-age children losing baby teeth. This guide walks through what causes an open bite, the signs parents can watch for, the treatment options available, and when it makes sense to schedule an orthodontic evaluation.
What Is an Open Bite in Children?
An open bite is a type of malocclusion, which simply means the teeth do not line up the way they should. With an open bite specifically, the upper and lower teeth fail to meet vertically in one part of the mouth, even though the jaw is closed.
Anterior Open Bite
An anterior open bite affects the front teeth. When a child bites down, the upper and lower front teeth do not touch, leaving a gap you can often see just by looking at their smile. Kids with this type of open bite may struggle to bite into foods like sandwiches or apples, since the front teeth cannot make full contact.
Posterior Open Bite
A posterior open bite affects the back teeth instead of the front ones. This type is less visible but can still cause chewing difficulty, since the back molars do not make even contact when the child bites down.
Dental Open Bite vs Skeletal Open Bite
Some open bites come from the position of the teeth alone. Others involve the way the jaw itself has grown. This distinction matters because a dental open bite may respond well to habit correction or an appliance, while a skeletal open bite often needs a different approach and longer-term monitoring. An orthodontist can determine which type is present during an evaluation.
What Causes Open Bite in Children?
Open bites usually develop from a mix of habits, jaw growth, and how the teeth come in over time.
Thumb Sucking and Pacifier Habits
Thumb sucking and pacifier use are two of the most common causes of open bite in young children. When these habits continue past the toddler years, they can push the front teeth forward or prevent the bite from closing normally. According to the American Academy of Pediatric Dentistry, prolonged pacifier use beyond age three has been linked to a higher rate of open bite. Many habit-related open bites improve once the habit stops early enough, especially when the front teeth have not fully finished growing in.
Tongue Thrust and Tongue Posture
Tongue thrust happens when the tongue pushes against or between the teeth during swallowing, speaking, or even at rest. Over time, this repeated pressure can keep the front teeth from meeting properly, contributing to an open bite.
Mouth Breathing and Facial Growth
Mouth breathing is worth discussing carefully. Orthodontists often ask about a child’s breathing patterns because they can influence jaw and facial development over time. Researchers have found a connection between airway issues and malocclusion in young children, which is one reason a habit and airway discussion is a standard part of most orthodontic evaluations.
Jaw Growth Patterns
Some children inherit vertical jaw growth patterns that make an open bite more likely, independent of any habit. In these cases, the way the jaw is growing plays a bigger role than any single behavior.
Tooth Eruption Problems
Delayed or abnormal tooth eruption can also affect how the bite develops. When teeth come in out of sequence or at an unusual angle, they may not meet correctly, contributing to an open bite pattern as more permanent teeth arrive.
Signs Your Child May Have an Open Bite
Parents do not need to diagnose an open bite themselves, but knowing the common signs makes it easier to know when to ask a dentist or orthodontist for a closer look.
Front Teeth Do Not Touch
When your child bites down, you may notice a visible gap between the upper and lower front teeth, even though the jaw is fully closed. This is often the most noticeable sign of an anterior open bite.
Difficulty Biting Into Food
Foods like pizza, apples, sandwiches, and corn on the cob can be harder for your child to bite through cleanly. If you notice your child chewing with their side teeth more than their front teeth, or avoiding certain foods altogether, it may be related to how their bite comes together.
Speech or Lisping Concerns
Some open bites may affect certain sounds, though this varies from child to child and is not guaranteed. Speech changes alone are not a reliable way to identify an open bite, but they can be worth mentioning alongside other signs.
Tongue Sitting Between the Teeth
If you notice your child’s tongue resting or pushing between their front teeth, whether at rest, while swallowing, or while speaking, this can be a warning sign worth pointing out at their next appointment.
Mouth Breathing or Open-Mouth Posture
Frequent mouth breathing is worth mentioning to your child’s dentist, especially when it appears alongside a visible bite gap. Because breathing patterns can influence jaw and facial growth over time, combining the two signs gives an orthodontist more useful information when deciding whether a closer evaluation makes sense.
Why Early Open Bite Evaluation Matters
Early evaluation does not always mean immediate braces. In many cases, it simply means keeping an eye on how the bite is developing.
Growth Is Easier to Guide in Children
While a child is still growing, an early orthodontic evaluation, while their teeth and jaws are still developing, can sometimes help guide the bite into a healthier position. This approach, often called growth modification or interceptive orthodontics, works with the child’s natural growth rather than against it.
Oral Habits Can Be Easier to Correct Early
Habit correction, such as breaking a thumb-sucking or pacifier habit, tends to be more effective before permanent teeth fully erupt. Catching the habit early can help reduce how much it affects the developing bite.
Delayed Treatment Can Make Correction More Complex
Some untreated open bites become harder to correct as a child gets older, particularly when skeletal growth patterns are involved rather than just a habit. This is not meant to alarm parents. It is simply why many orthodontists recommend an evaluation sooner rather than later if a bite issue looks persistent.
How Orthodontists Diagnose an Open Bite
A first evaluation is usually straightforward, and knowing what to expect can ease any worry going in.
Bite Examination
The orthodontist checks how the teeth make contact and how the jaw moves when your child bites down, opens, and closes.
Digital X-Rays and Growth Assessment
Dental X-rays or imaging may be used to get a clearer picture of jaw growth and how teeth are erupting beneath the gums.
Habit and Airway Discussion
The provider will likely ask about thumb sucking, pacifier use, mouth breathing, sleep patterns, and tongue posture, since these all factor into the bigger picture.
Determining Whether Treatment Is Needed Now or Later
Not every child needs treatment right away. Some benefit from monitoring over time, while others are good candidates for early intervention. The orthodontists at smilebuilderz can determine which type of bite issue is present and recommend the right next step based on what they find.
Open Bite Treatment Options for Children
Treatment options range from simple habit changes to more involved orthodontic care, depending on the cause and severity of the open bite.
Habit Correction
For habit-related open bites, correcting thumb sucking, pacifier use, or tongue posture is often the first step. This can include positive reinforcement, gradually reducing pacifier use, or using a reminder-based approach rather than stopping a habit abruptly. Success depends a lot on the child’s age and how consistently the habit is addressed.
Myofunctional or Tongue Posture Support
Some children benefit from myofunctional therapy, which helps retrain tongue posture and swallowing patterns. This support can reduce the pressure contributing to the open bite, especially when tongue thrust is part of the underlying cause.
Interceptive Orthodontics
Interceptive orthodontics, sometimes called Phase 1 treatment, uses appliances designed to guide bite development while a child is still growing. This approach may help correct or reduce an open bite before all of the permanent teeth have erupted. A palatal expander is one example of this kind of early appliance, used in certain cases to help support healthier jaw and bite development.
Braces or Clear Aligners Later
Some open bites need comprehensive orthodontic treatment once more permanent teeth have erupted. Braces or clear aligners can address the bite more fully at this stage.
Surgical Treatment in Severe Skeletal Cases
In severe skeletal cases, surgical treatment is sometimes considered, but this is typically reserved for adults after growth has finished rather than for a typical childhood case.
Open Bite vs Overbite vs Underbite
Parents often ask how an open bite differs from other common bite problems.
Open Bite
With an open bite, the front or back teeth do not meet vertically when the jaw is closed, leaving a visible gap. This can affect how a child bites into food and, in some cases, how certain sounds are formed while speaking.
Overbite
With an overbite, the upper front teeth overlap the lower front teeth more than normal. A small amount of overlap is typical, but a pronounced overbite can affect jaw comfort and the way the front teeth wear over time.
Underbite
With an underbite, the lower teeth or jaw sits ahead of the upper teeth. This pattern often involves how the jaw itself has grown, so it tends to need a different treatment approach than a bite issue caused mainly by tooth position.
| Bite Type | What It Looks Like |
|---|---|
| Open Bite | Front or back teeth do not touch vertically when biting down |
| Overbite | Upper front teeth overlap the lower front teeth more than normal |
| Underbite | Lower teeth or jaw sit ahead of the upper teeth |
Why Correct Diagnosis Matters
Each of these bite issues has different causes and different treatment timing, which is why an accurate diagnosis matters more than trying to identify the exact problem at home. A crossbite is another bite pattern that affects children and is worth understanding alongside open bite, overbite, and underbite, since the treatment approach can differ for each.
Open Bite Treatment in Lancaster, Ephrata & Lititz
Why Local Monitoring Helps Growing Smiles
A child’s bite changes over time as their jaw grows and teeth continue to erupt. Having a local provider for regular follow-up makes it easier to track those changes and adjust the plan as needed.
Pediatric Dentistry and Orthodontics Working Together
Families across Lancaster, Ephrata, and Lititz benefit from having pediatric dental and orthodontic care in the same place. At smilebuilderz, pediatric dentists and orthodontists work together under one roof, which makes it easier to coordinate care for a pediatric dentist in Lancaster, PA, or an orthodontist in Lancaster, PA, without bouncing between separate offices.
Frequently Asked Questions About Open Bite in Children
What is an open bite in children?
An open bite means the upper and lower teeth do not touch properly when the child bites down. It often affects the front teeth, but it can also affect the back teeth.
Can a child outgrow an open bite?
Some habit-related open bites may improve if the habit stops early. True skeletal or persistent open bites usually need orthodontic evaluation.
What causes an open bite in kids?
Common causes include thumb sucking, pacifier habits, tongue thrust, mouth breathing, abnormal eruption, and jaw growth patterns.
At what age should an open bite be evaluated?
Parents should ask about an evaluation around age 7 or earlier if the bite looks unusual, the child cannot bite into food well, or habits continue.
Can braces fix an open bite?
Braces can help many open bite cases, but treatment depends on whether the issue is dental, skeletal, or habit-related.
Is tongue thrust related to open bite?
Yes. Tongue thrust can contribute to an open bite by placing repeated pressure between the front teeth.
Does open bite treatment hurt?
Most orthodontic treatment causes pressure or temporary soreness, not severe pain. The experience depends on the appliance and treatment plan.
What happens if an open bite is left untreated?
Untreated open bites can affect chewing, speech, tooth wear, bite stability, and future orthodontic complexity.
Schedule an Open Bite Evaluation for Your Child in Lancaster, Ephrata, or Lititz
If you have noticed your child’s front teeth do not touch, a tongue habit that will not quit, mouth breathing, or any other bite concern, it is worth having a closer look. An early conversation with an orthodontist can help you understand what is happening and what, if anything, needs to happen next.
Families in Lancaster, Ephrata, and Lititz can schedule an evaluation for their child at smilebuilderz, where pediatric dentistry and orthodontics work together to support your child’s growing smile every step of the way.
