Can’t get cavities if you ain’t got teeth

It won’t prevent you from needing a deep cleaning (in cases where you actually need it). Deep cleanings are necessary when the inflammation from poor hygiene has caused you to lose bone in your jaw and the pockets underneath the gums have deepened to the point that food is getting stuck in them and hardening (causing more of the inflammation mentioned above). In those cases you need to be numbed to have the hardened food scraped out by a professional.

Dental schools are a good option for general care too. Cheap and surprisingly high quality work, but very slow.

This only works if the source of the pain is an infection. If the pain is from an exposed nerve this will be torture.

Syzygy - a roughly straight-line configuration of three or more celestial bodies in a gravitational system.

Thanks for the new word!

Have you checked out Bisq?