
I lost my Kizi at 8 weeks short of 14 years old and her grandmother at 13 years 7 months and both had perfect teeth and full dentition until their deaths. They were fed primarily a dry diet, with occasional periods of raw, but always had some raw when I could obtain.
Never brushed teeth but ensured that several times a month they had bones to chew (preferably ones they could eat), and when i can't get bones they get cow hooves.
I think heredity plays a part as both Kizi and her grandmother Elka had lovely white teeth, where as Kizi's Mum Tula had cream teeth once she reached 3 or three years (but still had them all to her death at 11).
Kizi's daughter Jozi 12 this month has again the cream teeth, very large and healthy, though she had one front incisor lost due to an epulis.
Her daughter Lexi had an abscess in the large carnasial upper tooth (the huge one), these are the first to loose teeth, but no rotten or smelly teeth ever.
With an 8 month old puppy with Brilliantly white teeth, I too wish they would stay that way.
Don't know how long they will last if she doesn't stop digging up and chewing stones and lumps of concrete.