Within the context of medieval art, the application of highly pure ultramarine in illuminated works was restricted to luxury books of high value and importance, and only scribes and painters of exceptional skill would have been entrusted with its use [advances.sciencemag.org]

One major advantage is that it’s drawn directly from the mouth of the deceased person, which can conclusively show what individuals ate, what they drank, or what they coughed up, rather than drawing inferences based on what was left in their graves or [nationalgeographic.com]

TOOTHPASTE WHITESTRIPS MOUTHWASH KIDS LEARN Why Crest Crest Toothpaste Crest Whitestrips Crest Mouthwash Stannous Fluoride Protection FAQ Conditions Bad Breath Cavities & Tooth Decay Gum Health Plaque & Tartar Teeth Sensitivity Teeth Stains Tooth Enamel Toothache [crest.com]

Using it about once a month could be helpful to avoid toothache and gum illness. Easy & Convenient to Use: there are five gears available for your teeth cleaning according to your favor. [amazon.ca]

Patients are usually unaware of its existence until suddenly some other symptom as bleeding gums reveals it. How to Prevent Dental Tartar Buildup? Proper brushing and flossing are necessary to reduce plaque and tartar buildup. [mouthandteeth.com]

Calculus formation is known to be layered, 38 most likely progressing from low chromophore number density (low- ρ a ), Gram-positive bacteria 39 on the calculus/tooth interface to high- ρ a, Gram-negative bacteria on the calculus surface. 39 – 43 This [spiedigitallibrary.org]