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Dental floss (waxed) Levi Spear Parmly (1790-1859), a dentist from New Orleans, is credited with inventing the first form of dental floss. [4] In 1819, he recommended running a waxen silk thread "through the interstices of the teeth, between their necks and the arches of the gum, to dislodge that irritating matter which no brush can remove and which is the real source of disease."
DenTek Oral Care, Inc. is an American private company that develops, manufactures and markets oral care products. DenTek was founded in 1985 by John Jansheski. His father, John Jansheski, invented an at-home tartar removal device. [1] Their products are available in the United States, Canada, Germany, and the United Kingdom.
where is the tap drill size, is the major diameter of the tap (e.g., 3 ⁄ 8 in for a 3 ⁄ 8-16 tap), and / is the thread pitch (1 ⁄ 16 inch in the case of a 3 ⁄ 8-16 tap). For a 3 ⁄ 8-16 tap, the above formula would produce 5 ⁄ 16, which is the correct tap drill diameter. The above formula ultimately results in an approximate 75% thread.
During the first month after Election Day in November, the S&P stock index rose a nifty 5.3%.Investors cheered incoming President Donald Trump, who promised fiscal stimulus in the form of tax cuts ...
Dylan Dreyer is doing her best to ration eggs.. The Today personality took to social media this week to express her fears around using up all the eggs in her home, considering that the grocery ...
The origin of Glide (which is what the brand was called prior to the P&G acquisition) dates to 1971, when Bill Gore first used a Gore-Tex fiber to floss his own teeth; [1] Gore-Tex was the PTFE-based fiber he had invented as a "waterproof laminate". The company failed to market the product for more than three decades.