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Dental floss (waxed) Levi Spear Parmly (1790-1859), [4] a dentist from New Orleans, is credited with inventing the first form of dental floss. [5] 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."
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.
The Canadian Dental Association and the American Dental Association both recommend use of dental tape or a floss holder to make flossing easier . --Ronz 03:06, 29 November 2006 (UTC) "To make flossing easier, try using a plastic floss holder or use dental tape." --Ronz 22:06, 7 January 2007 (UTC)
Sure, you may not think that roll of dental floss has any use, but in reality, it's actually a life-changing product. If you didn't already know, dental floss can seamlessly reattach buttons, ...
Air turbine used in a dental handpiece Correlation between rotational speed and torque Correlation between rotational speed and turbine output power. The turbine is powered by compressed air between 35 and 61 pounds per square inch (~2,4 to 4,2 bar), [1] [2] which passes up the centre of the instrument and rotates a Pelton wheel in the head of the handpiece.
While modern nuts and bolts are routinely made of metal, this was not the case in earlier ages, when woodworking tools were employed to fashion very large wooden bolts and nuts for use in winches, windmills, watermills, and flour mills of the Middle Ages; the ease of cutting and replacing wooden parts was balanced by the need to resist large amounts of torque, and bear up against ever heavier ...
Needle threader and usage with a needle. Typical needle threader. A needle threader is a device for helping to put thread through the eye of a needle.Many kinds exist, though a common type combines a short length of fine wire bent into a diamond shape, with one corner held by a piece of tinplate or plastic.
Jennings gag. In the context of surgery or dental surgery, a gag is a device used to hold the patient's mouth open when working in the oral cavity, or to force the mouth open when it cannot open naturally because of forward dislocation of the jaw joint's intraarticular cartilage pad.