Thumb sucking and pacifier use are normal ways for babies and young children to comfort themselves. For many children, the habit fades naturally and never creates a lasting orthodontic problem. When strong or frequent sucking continues as the teeth and jaws develop, however, it can begin to change the way the front teeth and bite fit together.
One possible result is an open bite—a space between the upper and lower front teeth when the back teeth are touching. If you have noticed this change in your child, an early evaluation can help you understand whether the bite is likely to improve after the habit stops or whether additional care should be considered.
At Parker Wentz Orthodontics, we evaluate the whole pattern: your child’s age, growth, tooth eruption, bite, breathing, tongue posture, and the frequency and intensity of the habit.
What Is an Open Bite?
In a typical bite, the upper front teeth overlap the lower front teeth slightly. With an anterior open bite, the upper and lower front teeth do not meet when the child closes their mouth, leaving a visible opening between them.
An open bite can make it harder to bite into certain foods. Some children may also develop changes in tongue position or speech. The appearance and effect can vary considerably, so an examination is more useful than trying to judge severity from a photograph alone.
Not every open bite is caused by thumb sucking. Growth patterns, jaw relationships, tongue posture, tooth eruption, and other factors may contribute. Identifying the cause is an important part of deciding what—if anything—should happen next.
How Can Thumb Sucking Change a Child’s Bite?
When a thumb, finger, or pacifier rests between the front teeth repeatedly, it can affect the forces acting on developing teeth and supporting structures. Over time, the upper front teeth may tip forward, the lower front teeth may tip backward, and the front teeth may not erupt into contact as expected.
The effect depends on more than the child’s age. Important factors include:
- How many hours each day the child sucks their thumb or uses a pacifier
- Whether the habit continues during sleep
- How forceful the sucking is
- The position of the thumb or pacifier
- The child’s individual pattern of dental and jaw growth
A child who occasionally rests a thumb in the mouth may have a different risk than a child who sucks strongly for long periods. That is why recommendations should be individualized.
When Should Thumb Sucking Stop?
Many children stop thumb sucking between ages two and four. Parents should not feel ashamed or assume they have done something wrong if the habit continues. Thumb sucking often serves a genuine comforting function, and a calm, supportive approach is usually more productive than punishment.
It is worth discussing the habit with your child’s dentist or orthodontist if:
- It continues as the permanent front teeth are approaching eruption
- You can see a growing space between the upper and lower front teeth
- The upper front teeth appear to be moving forward
- Your child has difficulty biting into food with the front teeth
- You notice a tongue-thrust pattern or a change in speech
- Your child also snores, breathes through the mouth, or sleeps restlessly
- You have tried positive habit-reminder strategies without success
The American Association of Orthodontists recommends an orthodontic evaluation by age seven, but a child can be seen earlier when a parent or dentist notices a developing bite concern. Learn more about early orthodontic treatment and why timing matters.
Will the Open Bite Close After the Habit Stops?
Sometimes an open bite improves as a young child grows after the sucking habit ends, particularly when the change is primarily dental and permanent teeth have not fully erupted. Improvement is not guaranteed, however. The likelihood depends on the child’s age, growth pattern, severity of the open bite, tongue posture, and whether other factors are maintaining the space.
Stopping the habit is an important first step, but it does not replace an evaluation when noticeable bite changes are present. Monitoring allows the orthodontist to see whether the bite is improving naturally or whether treatment may be helpful.
How Can Parents Help a Child Stop Thumb Sucking?
The goal is to help the child succeed without creating embarrassment or conflict. Helpful strategies can include:
- Praise and reward periods when the child does not suck their thumb.
- Identify common triggers such as fatigue, anxiety, boredom, or bedtime.
- Offer another comforting routine, such as a stuffed animal, story, music, or holding a parent’s hand.
- Let an older child help choose a reminder system or reward chart.
- Use gentle reminders instead of teasing, criticism, or punishment.
- Talk with the child’s dentist, pediatrician, or orthodontist if the habit remains difficult to stop.
Nighttime habits can be especially challenging because the child may not realize they are doing it. In selected cases, a professional may recommend a reminder strategy or appliance, but this should follow an examination rather than a one-size-fits-all approach.
Can HealthyStart Help With Oral Habits?
The HealthyStart system uses removable appliances designed for growing children. One phase is intended to help address certain oral habits, including thumb sucking, while supporting developing dental arches and tooth eruption.
HealthyStart is not appropriate for every child or every open bite. Success depends on diagnosis, growth, appliance fit, and consistent wear. Some children may benefit from observation and habit support alone, while others may need a different type of early orthodontic treatment.
Dr. Parker Wentz evaluates the cause of the bite problem before recommending an appliance. If breathing or sleep symptoms are also present, he may recommend that the family discuss those concerns with the child’s pediatrician or another appropriate healthcare provider. Orthodontic evaluation does not replace medical evaluation or diagnose a sleep disorder.
Does Every Child With an Open Bite Need Early Treatment?
No. Some open bites improve after the habit stops, and some children are best monitored as they grow. Others may benefit from treatment while growth is active, particularly when the habit persists or the bite change is becoming more pronounced.
An early evaluation does not automatically mean braces or an appliance. It provides information. If treatment is not needed, Parker Wentz Orthodontics can monitor tooth eruption and jaw development and recommend the appropriate time for another visit.
What Happens at an Orthodontic Evaluation?
During your child’s visit, the orthodontic team may review:
- The position and eruption of the baby and permanent teeth
- How the upper and lower teeth fit together
- The child’s dental arches and jaw relationships
- Thumb, finger, or pacifier habits
- Tongue position and swallowing pattern
- Nasal versus mouth breathing
- Sleep or airway symptoms that should be discussed with a medical provider
Dr. Wentz will explain what he sees, whether the habit appears to be affecting development, and whether the best next step is observation, habit support, an appliance, or another treatment approach.
Schedule a Child’s Orthodontic Evaluation in Lubbock
If your child continues to suck their thumb or use a pacifier and you have noticed changes in the front teeth or bite, you do not have to guess about what comes next. A timely evaluation can help distinguish a habit that simply needs monitoring from one that may benefit from additional support.
Request a complimentary orthodontic exam at Parker Wentz Orthodontics in Lubbock. We will evaluate your child’s bite and development and help your family make a thoughtful, age-appropriate plan.