Child's orthodontic treatment.

When is the most appropriate time for orthodontic treatment?

Isn't it difficult to correct very young children?

It's a 7-year-old child, and I think it might be painful and very uncomfortable for the child during the correction.

When I was young, my permanent teeth hadn't come in yet.

Is it possible? Then the permanent teeth have been corrected.

Will it come out in that condition?

I thought the permanent teeth would come out.

It seems that's not the case..