the.com/tartar
The plaque that overstayed its welcome and turned to concrete on your teeth.
means Hardened dental plaque, or alternatively the crusty acid deposit wine leaves behind in barrels.
from From Medieval Latin tartarum, the crust wine deposits in casks; the dentists borrowed it for the equally stubborn crust on molars.
Also calledcalculus, long before math claimed the word
Wine versioncream of tartar starts as barrel scrapings
Only fixa scaler, never a toothbrush
Speed demoncan mineralize within days of slacking