At 50+, I have all of my wisdom teeth, and only one filling. (I wouldn't even have that filling aside from an incompetent dentist in my teens.) I don't do anything special; lucky genetics and microbiome.

All of my dentists have been happy... except, in my mid-30s, one dentist insisted all four wisdom teeth be removed. (Something about how they're hard to clean.) He even made me watch a video on the process: I finally ran for the hills when given a form that absolved the office of a "slight chance of death" for the procedure.

15+ years later, and no other dentist has had any complaints. It sure seemed profit-motivated.

I tell all my friends to get a second opinion when their dentist recommends pulling the wisdom teeth.