the dental elephant in the room is that our body can heal cavities to some extent. especially if you change your dental hygiene and diet. (also your dentist might have tried to scam you, of course)
There’s a process that is approved in Europe but not in the US last I looked. Involves UV light (or was it ozone?) and a bag over your tooth full of intense fluorine to first kill the cavity and then remineralize it. No drill.
