Thumb sucking and pacifier use: Dental impacts

For many parents, the sound of a baby happily sucking on a thumb or pacifier is the sound of peace.

1/18/20262 min read

The Great Soother Debate: How Thumb Sucking and Pacifiers Affect Your Child’s Smile

For many parents, the sound of a baby happily sucking on a thumb or pacifier is the sound of peace. These "non-nutritive sucking habits" are completely natural; infants are born with a rooting reflex, and sucking provides them with a sense of security and comfort.

However, as those first tiny teeth begin to peek through, a common question arises: Is this habit going to ruin their smile?

The short answer is: It’s all about timing. Here is a look at how these habits impact dental development and when it’s time to trade the binky for the "Big Kid" club.

The Benefits of Early Sucking Habits

Before we dive into the dental concerns, it’s important to acknowledge why these habits exist. Sucking is a self-soothing mechanism.

  • Stress Relief: It helps babies lower their heart rate and cortisol levels.

  • Sleep Aid: It often helps infants fall asleep and stay asleep longer.

  • Pain Management: It can provide a distraction during teething or vaccinations.

When Does It Become a Problem?

Most pediatric dentists agree that sucking habits are harmless for the first few years of life. The real concern begins when the permanent teeth start to prepare for eruption, usually around age 4 to 6.

If the habit is intense and frequent, it can put pressure on the soft bone of the upper jaw and the alignment of the teeth.

Thumb vs. Pacifier: Is One Better?

While both have similar dental impacts, many dentists actually prefer pacifiers.

Why? Because you can eventually take a pacifier away. You can’t "take away" a thumb. Pacifier use is often easier to break because parents can control the access, whereas thumb sucking is a habit that is always literally "at hand."

Pro-Tip: If you use a pacifier, look for "orthodontic" versions. These are designed with a flatter nipple to minimize the pressure on the developing palate.

Tips for Breaking the Habit

If your child is approaching preschool age and shows no signs of stopping, try these gentle strategies:

  1. Positive Reinforcement: Praise them when they aren't sucking their thumb, rather than scolding them when they are.

  2. Identify Triggers: Does your child suck their thumb when they are bored, tired, or anxious? Addressing the underlying feeling can reduce the need for the habit.

  3. The "Pacifier Fairy": For toddlers, creating a story about giving their pacifiers to new babies or a magical character can provide a sense of pride in "growing up."

  4. Consult Your Dentist: Sometimes hearing it from a professional in a white coat carries more weight than hearing it from Mom or Dad!

Final Thoughts

Don’t panic if your two-year-old is still attached to their pacifier. Most children stop these habits on their own as they develop other ways to cope with stress. However, staying proactive and keeping up with regular dental checkups will ensure that their "pearly whites" stay straight and healthy for years to come.