It's really hard to guess who's mouth is okay and whose won't be. Lola should have (by all the laws of averages for poms) been toothless by the time she died, but she had most of them. She didn't have her first dental till she was almost 10 and then didn't have any extractions. Had a few in her last dental, but still went to her grave with most of her teeth. And that's really rare. Most poms are gumming their food at an early age. The pugs have so-so teeth. Hazel has the best teeth and shouldn't given her early years in the mill with lots of litters and crappy diet.
Rocky is only 3 and even though I do brush his teeth (probably not as often as I should) and he chews EVERYTHING including items that he is not supposed to, he has some tartar on one of his back molars. I would bet my next paycheck that he will have rotten teeth long before he is ten despite my best efforts (and I do brush his teeth more often now)