I feel for this guy, so much. I bounced around between dentists, and may have even encountered the guy on Wilshire. But despite night grinding, TMJ and stage 4-5 gum recession, I've found stability after a bunch of years and dentists that I told to go pound sand when they wanted to make substantial physical modifications to my teeth. One of the worst was in Santa Monica; his AI receptionist still calls me trying to book appointments so they can drill in my "overdue fillings". Garbage.

What worked for me: Spider silk floss - It's thicker and somehow smoother than the "waxed" PFOS crud. Does a great job of getting stuff out of the pockets between teeth. LIVFRESH toothpaste - Better than any other toothpaste despite having no abrasives. Expensive as hell but you do only need a tiny amount. Just get used to putting water on your toothbrush first, it somehow evaporates on contact. Therasol mouthwash - Does this weird thing that wraps up any leftover food bits in your mouth into a gel you can easily spit out. Lasts for hours. Absolutely nothing like listerine or any other mouthwash I've ever tried.

Also use a tongue scraper, ultrasonic night-guard cleaner (the $20 ones work just fine) and occasionally use a Proclaim water flosser. The former are amazingly valuable, the latter... is fine I guess. It's not a substitute for real flossing. Hope this helps someone.