Your child still sucks their thumb. You have been told it could affect their teeth. You might feel worried — or unsure whether this is something they will simply grow out of. Here is when thumb sucking becomes a genuine dental concern and what you can do about it.

Thumb sucking is completely normal in babies and toddlers. It is a self-soothing behaviour that gives them comfort and security. Most children stop naturally between the ages of two and four.

However, if the habit continues past the age of four or five — when the adult teeth start to come through — it can begin to affect the development of the teeth and jaw.

When a child sucks their thumb, the constant pressure of the thumb against the front teeth and the roof of the mouth can push the front teeth forward. This creates an overbite, where the upper front teeth protrude over the lower teeth.

The roof of the mouth may also become narrower, which can affect how the upper and lower teeth meet. In severe cases, this can interfere with proper chewing and speech development.

Thumb sucking that is done vigorously — with a lot of suction — causes more damage than gentle resting of the thumb in the mouth. Some children also suck their fingers or dummy alongside thumb sucking, which compounds the effect.

If your child is a passive thumb sucker who just rests their thumb in their mouth, the dental impact is usually less significant than if they actively suck with force.

Most dentists recommend intervening if thumb sucking continues past the age of four or five, or if you notice changes in your child bite or the position of their front teeth. The longer the habit continues, the harder it can be to correct — and the more likely it is to require orthodontic treatment later.

You do not need to panic if your child is still sucking their thumb at age three. But it is worth being mindful and starting to gently encourage them to stop before they reach school age.

Punishing or shaming a child for thumb sucking usually backfires. Instead, focus on positive reinforcement: praise them when they do not suck their thumb, or use a reward chart to track progress.

Many children suck their thumb when they are tired, anxious, or bored — so look for patterns. Addressing the underlying anxiety or finding alternative comfort objects can help. Some parents find success with a gentle reminder, like a bandage or a special mitten worn at bedtime.

If you are concerned about your child thumb sucking habit, bring it up at their next dental appointment. Your dentist can assess whether there has been any impact on the teeth and jaw development, and suggest age-appropriate strategies.

Call 01323 723757 or book at www.meadsdental.com

Meads Village Dental Practice