I guess they are starchivores…lol
On a serious note the Egyptians had vitamin deficiencies (most likely Vitamin K) and the in-breeding didn’t help, you cannot attribute grain or agriculture to dental cavities, too many other variables to contend with; such as availability of micronutrients etc.
Footnotes:
[1] Trendy keto diet will NOT protect your teeth: Dentists urge followers of low-carb regimes to keep brushing twice a day - even if they are eating less sugar …More
I doubt meat ONLY eaters had tooth brushes and that slimy film would eventually lead to tooth decay and dental disease?
And meat ONLY eaters probably did not live long enough to get tooth decay from that IGF-1 trip hammer which will get you every time?