Effects of Thumbsucking on the Teeth Rely Dental in Irving and Benbrook Texas

smiling woman
Common Questions about Dental Sealant at Rely Dental
July 12, 2020
Cosmetic dentistry
Cosmetic Dentistry at Rely Dental in Irving Texas
July 29, 2020
Show all

Effects of Thumbsucking on the Teeth Rely Dental in Irving and Benbrook Texas


Thumbsucking is a natural reflex for children. Sucking on thumbs, fingers, pacifiers, or other objects may make babies feel secure and happy and help them learn about their world.

Young children may also suck to soothe themselves and help them fall asleep.

Does thumbsucking damage teeth?

Not all thumb-sucking results in damage to the teeth or mouth. For example, passively holding the thumb in the mouth doesn’t typically cause damage. However, active thumbsucking with a lot of motion can cause damage to primary (baby) teeth, though this usually corrects itself as the permanent teeth come in. Persistent, vigorous thumb-sucking can sometimes cause misalignment of your child’s permanent teeth and affect the jaw or the shape and roof of the mouth. Thumbsucking may also expose your child to dirt, bacteria, and viruses.

A study, reported in Pediatrics, found that children who suck their thumbs were less likely to experience allergic reactions to substances such as pollen and dust mites later on in life. So, deciding when, or even if, you may want to discourage thumbsucking involves various factors.

The intensity of the sucking is a factor that determines whether or not dental problems may result. If children rest their thumbs passively in their mouths, they are less likely to have difficulty than those who vigorously suck their thumbs. Some aggressive thumb-suckers may develop problems with their baby (primary) teeth.

Long-term effects of thumbsucking on the mouth

Vigorous thumbsucking can have many effects on the teeth and mouth. That’s because of the repetitive pressure the thumb and sucking places on the teeth, jawbone, and roof of the mouth. It may cause any of the following:

  • overbite, where the front teeth protrude out from the jaw and mouth
  • other bite issues, such as the bottom teeth tipping inward toward the back of the mouth or an open bite, where the top and bottom teeth don’t meet when the mouth is closed
  • changes to the shape of the jaw, which can also affect the alignment of the teeth and speech patterns, such as the development of a lisp
  • the sensitivity of the roof of the mouth

Most of these issues resolve or won’t develop at all if thumbsucking drops off by the time the permanent teeth are in. Children who suck their thumb for a long time and continue sucking their thumb vigorously may be at increased risk for these side effects.

When Do Children Stop Sucking Their Thumbs?

Children usually stop sucking between the ages of two and four years old, or by the time the permanent front teeth are ready to erupt. If you notice changes in your child’s primary teeth or are concerned about your child’s thumbsucking consult your dentist at Rely Dental in Irving and Benbrook Texas.

What should you do if you notice bite issues or other issues with the teeth

All children should start regular dental to Rely Dental in Irving and Benbrook Texas visits by 1 year of age. If later on, you notice your child’s front teeth are jutting out, or if your child seems to have a problem with their bite, talk to a pediatric dentist in Rely Dental in Irving and Benbrook Texas about your concerns.

Your child’s permanent teeth will not start coming in until they are 6 years old. However, damage can be done to their mouths before that time that may or may not correct itself. For that reason, it’s a good idea to talk to a doctor sooner rather than later, especially if you are concerned.

How Can I Help My Child Stop Thumbsucking?

  • Praise your child for not sucking.
  • Children often suck their thumbs when feeling insecure or needing comfort. Focus on correcting the cause of the anxiety and provide comfort to your child.
  • For an older child, involve him or her in choosing the method of stopping.
  • Your dentist can offer encouragement to your child and explain what could happen to their teeth if they do not stop sucking.

How long can a child safely suck their thumb?

If your child is past the age of 4 and still frequently sucks their thumb during the day, or if you’re concerned about your child’s thumb-sucking, talk to their pediatrician or dentist. They may recommend treatments or strategies you can try to help your child stop sucking their thumb. They may also recommend letting your child continue with the behavior until they give it up on their own, despite the possible effects on their baby teeth.

Many children stop sucking their thumbs on their sometime between ages 2 and 4. Consistent or vigorous thumbsucking that lasts past that time may affect the alignment of your child’s permanent front teeth and the shape of their mouth.

How to help your child stop sucking their thumb

If you are considering trying to get your child to stop sucking their thumb, realize that whatever method you choose has the best chance of success if your child also wants to stop. Helping your child to stop thumb sucking may depend upon their age.

In older children, talking to your child may be enough, especially if they’ve been teased about the practice by other children. Peer pressure can be a powerful deterrent in kids who are entering preschool or kindergarten. If at any point your child is resistant to giving up their thumb sucking, it’s best to just ignore the behavior. Sometimes, the more attention you pay to it, the more persistent it becomes.

Here are other ways to help your child stop sucking their thumb:

Notice your child’s thumb sucking triggers

Some children thumb suck when they are bored, tired, anxious, or hungry. If they appear to suck their thumb as a self-soothing strategy during stressful situations, attempt to figure out the root cause of their anxiety so you can address it. If they are thumb sucking at other times, try to engage them in an activity that uses their hands, such as drawing or playing catch. But don’t let thumb-sucking become a means of getting attention, either positive or negative.

Use positive reinforcement

Engage your child in wanting to stop the behavior by praising them when they don’t thumb suck or by letting them track the absence of the behavior with a sticker chart.

Keep them on track with gentle reminders

If your child absentmindedly thumb sucks, calmly tell them to stop. Be prepared to do this many times. This only works if your child wants help stopping their thumb sucking.

Ask your child’s dentist for help

Your child’s dentist can talk to them about their thumb sucking, letting them know of the type of damage they may be doing.

Try an orthodontic device

There are removable and non-removable orthodontic devices that can be used to disrupt the ability of a child to thumb suck. A pediatric orthodontist can work with you to determine which type is best for your child.

Use thumb shields

Various types of soft plastic or fabric thumb guards are available without a prescription if your child is interested in a reminder not to suck their thumb. Your child can wear them all the time or during the times they are most likely to thumb suck. You can also cover your child’s thumb at night with a glove, mitten, or sock if they thumb suck in their sleep. If your child only sucks their thumb while sleeping, remember that this is not something they can control.

Why do kids suck their thumbs? | Benefits

Thumb sucking is a soothing, reflexive behavior. It begins in the womb, before birth. Infants and babies often continue this relaxing practice after birth, which often helps to soothe them into sleep. In some children, thumb sucking may continue into the toddler years and is often utilized as a self-soothing mechanism for coping with stressful situations.

According to the American Dental Association, most children stop thumb sucking somewhere between 2 and 4 years of age.

Thumb sucking vs. pacifiers

One thing you shouldn’t do is replace your child’s thumb-sucking habit with a pacifier habit. Pacifier sucking creates the same potential for tooth damage that thumb sucking can. Pacifiers can also fall on the ground, making them germ magnets. The only upside to pacifier use is that you can take them away from your child as a strategy for breaking their habit.

If these tips don’t work, remind the child of their habit by bandaging the thumb or putting a sock on the hand at night. Your dentist at Rely Dental in Irving and Benbrook Texas or pediatrician may prescribe a bitter medication to coat the thumb or the use of a mouth appliance.




We love our patients and love to help them form healthy dental life that will last them a lifetime. For more information call us today to answer all of your questions, so get an appointment today.

Comments are closed.