Thumb Sucking and Pacifiers: When to Worry

By Dr. Mohsen Alozaibi, Tiny Teeth Dental Center, Abu Dhabi

"She only sucks her thumb when she's tired. Is that ruining her teeth?" Sucking is one of the first ways babies comfort themselves, and for most young children it's completely normal. The question isn't really whether your child sucks a thumb or pacifier, but for how long and how often.

A normal way to self-soothe

Babies are born with a strong sucking reflex. A thumb, fingers or a pacifier helps many infants and toddlers calm down, cope with new situations and fall asleep. Most children stop on their own somewhere between ages 2 and 4, often without any push from their parents.

When it starts to matter

In the early years, sucking habits usually don't cause lasting problems. Concern grows when the habit:

• continues past about age 4, or
• is still going strong as the adult front teeth start to come in, usually around age 6, or
• is frequent and intense, for many hours a day or all night long.

Over time, the steady pressure can move teeth and shape the growing jaw. Common effects include:

• Open bite: the upper and lower front teeth don't meet when the back teeth are closed, leaving a gap.
• Protruding upper front teeth that tip forward, and sometimes lower teeth that tip back.
• Narrowing of the upper jaw, which can affect how the back teeth fit together.

Changes in baby teeth often improve once the habit stops, especially if it stops early. The longer it continues into the adult-tooth years, the more likely it is that orthodontic treatment will be needed later.

Pacifier or thumb?

A pacifier tends to be easier to stop than a thumb, because you can gradually limit it and eventually take it away; a thumb is always available. If you use a pacifier:

• Never dip it in honey, sugar, juice or anything sweet. This can cause severe decay, and honey should not be given to babies under 12 months at all.
• Don't "clean" it in your own mouth, as this can pass on cavity-causing bacteria.
• Choose a size suited to your child's age, check it regularly for damage, and replace it when worn.
• Never tie it around your child's neck.

Gentle ways to help your child stop

Pressure and punishment usually make things worse, because the habit is tied to comfort. What tends to work better:

1. Find the triggers. Notice when it happens (tiredness, boredom, screen time, anxiety) and offer a cuddle, a soft toy or something to keep hands busy. 2. Praise, don't scold. Notice and praise the times your child isn't sucking, rather than pointing out every time they are. 3. Use a simple reward chart with stickers for each day or night without the habit, and a small celebration at the end of the week. 4. Let older children own the plan. A child who decides to stop is far more likely to succeed. Talk about it calmly, as a team. 5. For pacifiers, cut back in stages: first daytime only at home, then just for sleep, then a planned goodbye. Some families "give" the pacifier to a new baby or swap it for a special toy. 6. Gentle reminders at night, such as a sock or glove over the hand, can help a child who wants to stop but sucks while asleep.

How the dentist can help

Children often listen to a friendly dentist more than to their parents. At check-ups, your dentist can watch how the teeth and bite are developing, explain the habit to your child in simple terms, and, if needed, discuss other options or referral to an orthodontist for an older child.