It's a labor issue. Nobody has figured out any reasonable cost-effective ways to clean the crud out from down below if the teeth go south. Plus implants are so great anyway who needs their original teeth anyway?

DIY Perio makes up for this with sweat equity. Turning into rent-a-tooth at some point to keep them from falling out. Plus fingers crossed.

Periodontal abscesses raise the level of honesty significantly. Turning it into a sort of cage-wrestling match where you can cry uncle anytime and just get the tooth pulled.

But otherwise if you can catch it before it gets too bad then can end up with teeth that aren't so bad after all.