In the upper gum out canine teeth, a tiny, what is the reason?

In the upper gum out canine teeth, a tiny, what is the reason?

Question:

Gender: male
Age: 6 1/2 years old
History: caries

Description: recent illness in canine gum out above a small teeth, what is it?

Treatment:

Eruption may be permanent teeth, to the hospital the examination, if is permanent teeth, to prompt remoal teeth.