Understanding The Transition: When Do Kids Start Losing Baby Teeth And Getting Permanent Teeth? 

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By Central Park West Orthodontics | June 11, 2025

The journey from baby teeth to permanent teeth is a significant developmental milestone in every child’s life. For parents, this is a crucial phase to witness. Understanding when and how this transition occurs can help you, as a new parent, better support your child’s oral health and spot any early signs of potential issues. There are certain things to expect, and being prepared will help you feel confident as your tiny tot’s smile grows and changes.

When Does The Transition Of Baby Teeth Falling Out to Begin?

Most children begin to lose their deciduous teeth, also called primary teeth, around the age of 6. However, this is not a strict rule and can vary among kids. Some may start as early as 4, while others might see the change when they turn 7 or 8.

This process usually begins with the lower front teeth (central incisors), followed by the upper front teeth.
The phase from milk teeth to the second set of teeth is typically completed around the age of 12 to 13. However, wisdom teeth emerge much later, usually between the ages of 17 and 25.

The Stages Involved In Baby Tooth Transition

As children grow, their mouths change to make room for secondary teeth. This shift is a natural part of development and happens in stages over several years. Knowing when each stage usually occurs can help parents track their oral progress and spot any delays or concerns early on.

Here is a general timeline of what to expect:

  • Ages 6 – 7: Lower and upper central incisors fall out and are replaced by adult teeth.
  • Ages 7 – 8: Lateral incisors are lost and replaced.
  • Ages 9 – 11: First molars come in; canines and premolars begin to emerge.
  • Ages 12 – 13: Second molars erupt, finalizing the main phase of dental development.

During this time, adult teeth finally show up, causing the milk teeth to loosen and eventually fall out.

When Should You Consult With An Orthodontist In New York City?

Sometimes, the process does not go exactly as expected. You might notice:

  • Milk teeth are not falling out even though adult teeth are erupting.
  • Permanent teeth are coming in crooked or overlapping.
  • Large gaps between teeth that do not seem to close.

In such cases, it is advisable to consult a professional. A pediatric orthodontist in NYC can assess your little one’s oral development and guide you on the best steps forward. They can further assist you with preventive steps to safeguard their growing smiles and treat them if they detect any warning signs.

Expert Guidance From Leading Children’s Dentist In New York

The transition from milk teeth to adult teeth is a natural and exciting phase of childhood. While most kids go through this process without major issues, early monitoring, and timely care can assist as their pearly whites develop.

Help your child build a strong foundation for a lifetime of healthy smiles. Schedule an appointment with our trusted orthodontist in New York City today and ensure a smooth dental transition.

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