I had braces.
It absolutely DID involve loss of teeth: two molars from the top and two from the bottom, to make room for the top premolars and incisors to move back, and at the bottom to move the molars forward to make room for wisdom teeth.
I wanted a sailing boat like my friend Robert. That cost about the same as the orthodontic work, but my parents would only pay for one of those things so they made me choose.
Maybe not such a free choice, given I was only about 11 and my parents clearly preferred the othodontic work, but it was a real choice. I could have chosen the boat instead, developed the expensive hobby of sailing and then later have needed dental surgery to deal with the wisdom teeth.
The point I'm trying to make is that a child of 11 (or even of 6!) has a whole lot more capacity to choose than an infant. To consent to what their parents say is best for them is not such a free choice (informed and uncoerced) but nor is it completely beyond their knowledge or power, to object.




