Unless I'm misreading the article, right now this seems to just be regrowth for a very specific medical condition where teeth didn't come in in the first place?
The article mentions the possibility of stimulating growth in a latent third set of buds all adults have. But that doesn't seem to be what this specific breakthrough is.
Most new things are not at all accessible to impoverished people (we saw this with covid vaccine inequality) and they are the ones most likely to have tooth loss due to lack of access to dental care.
This is true in the short term, but drugs and treatments can get cheaper over time, whereas implant dentistry is intrinsically expensive in a way that's unlikely to ever improve.
I was shocked to learn that dental sealant exists. This simple procedure is very effective in preventing cavities, so once a kid has adult teeth they'll be protected into their 20s.
Yet, many people don't know to ask for this and can't afford the upfront cost (about $40 per tooth). Yet, unless your kid has fewer than 3 cavities as a teen it is the most cost effective and wellness promoting option.
It's wild to me this isn't a heavily subsidized and promoted procedure, but I guess dental care =/= healthcare...