3 doctors weighed in:

If the deciduous teeth are eventually replaced by permanent teeth , why do you get them in the first place?

3 doctors weighed in
1 doctor agrees

In brief: Proper development

Teeth erupt in a specific sequence to allow children to develop bones, muscles, and speech normally.
Teeth are important in not only eating and learning speech, but in the normal development of the face and jaws. Any changes in this sequence by early loss of teeth, or untreated dental infections, can have serious and long-term effects on a child's physical and mental well.

In brief: Proper development

Teeth erupt in a specific sequence to allow children to develop bones, muscles, and speech normally.
Teeth are important in not only eating and learning speech, but in the normal development of the face and jaws. Any changes in this sequence by early loss of teeth, or untreated dental infections, can have serious and long-term effects on a child's physical and mental well.
Dr. Jennifer Holtzman
Dr. Jennifer Holtzman
Thank
Dr. Jason Huffman
Orthopedic Surgery - Spine

In brief: Small mouth

When we are children our mouths are small and adult teeth would be crowded.
As the mouth grows we need bigger teeth to fill it.

In brief: Small mouth

When we are children our mouths are small and adult teeth would be crowded.
As the mouth grows we need bigger teeth to fill it.
Dr. Jason Huffman
Dr. Jason Huffman
Thank
Read more answers from doctors