This is something different. This treatment is not for replacing teeth that were somehow lost, but for people where one or more teeth didn't develop in the first place.
As someone who has experienced decades of poverty and chronic depression who is now finally in a more stable place, I'd be willing to trade certain other body parts if it meant I could have a do over on my teeth. As long as the pain isn't life long, I'd get over it.
I'm self conscious about the way my mouth moves when I talk, how I smile or laugh (whether or not it's worth the risk) and even how I chew. I'd be willing to be a test subject, because God knows what they'd charge if it works.