This is not only not dentist's dream, but this is their nightmare as well as others' like toothpaste producers.
Most dentists that I've been to have more business than they're able to serve, so I suppose their client base won't dry up too soon - especially that such procedures are bound to be expensive - at least initially.
Then there's orthodontics, because who says that this new tooth will grow perfectly straight?
Embrace Tooth Regrowth Serum Salesman.