My first Vizsla, had one of his canine puppy teeth, and his adult teeth at the same time. He was almost 14 months old. One day it was gone.
Let your vet know and keep track of it.
Pulling teeth in a dog is a bigger deal than many people credit. I doubt a Vet would do it to a 7 month old dog, unless there was some underlying reason. Let it fall out on it's own.