Posted on March 1, 2025

At Lewisville Kids Dentistry, we know the sight of your baby smiling for the first time is one of the most heartwarming moments of parenthood. As your little one begins to express joy, they are not only developing communication skills, but they are also building the foundation for a healthy smile that will last a lifetime. Here’s a look at your baby’s smile development from 0-12 months.

Baby Smile Development Milestones

0–6 Weeks (Reflexive Smiles)

• At this stage, your baby’s smiles are reflexive and often occur when they’re drowsy or during REM sleep.
• These smiles are usually short, lasting just a few seconds, and may appear more like a grimace, especially if triggered by gas.

6-8 Weeks (Responsive Smiles)

• Your baby begins to smile in response to sensory experiences like hearing your voice or seeing your face.
• These early smiles are more intentional and a sign of pleasure, though they might still be a bit uneven or lopsided.

2-3 Months (Social Smiles)

• By now, your baby is smiling with purpose, often in recognition of familiar faces like yours or those of close family members.
• These smiles are more symmetrical and can last longer, with your baby actively engaging through eye contact.

6 Months (Undiscriminating Smiles)

• At this age, your baby enjoys smiling at everyone, whether they know them or not. The joy of smiling becomes more frequent.
• It’s a phase where your little one’s social smiles are free from selectivity, often triggered by any friendly face.

9 Months (Selective Smiles)

• Your baby begins to develop stranger anxiety, and their smiles become more selective.
• They may smile more readily at familiar faces but might show discomfort or tears around unfamiliar people. This is a completely normal developmental phase.

12 Months (Developing a Sense of Humor)

• By the time your baby reaches one year, their smile is often paired with a developing sense of humor.
• They may laugh at funny sounds, silly faces, or familiar routines, showing a more defined personality and early communication skills.

Supporting Your Baby’s Smile Development

• Oral Health: As your baby’s smile develops, it’s essential to keep their gums and early teeth clean. Start wiping their gums with a soft cloth after feedings and schedule their first dental visit around their first birthday.
• Baby Teeth: Baby teeth typically begin to emerge around 6 months of age. Maintaining healthy teeth will contribute to your child’s long-term dental health.
• Healthy Habits: Avoid sugary snacks and drinks, as they can lead to cavities in baby teeth, which are crucial for proper speech development and future dental alignment.

Book an Appointment Today!

Whether it’s their first smile or their first visit to see our dentist, we’re here to help your baby maintain a healthy smile every step of the way. Contact us today to schedule your child’s dental appointment!