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Doramad Radioactive Toothpaste. Doramad Radioactive Toothpaste (Doramad Radioaktive Zahncreme) was a brand of toothpaste produced in Germany by Auergesellschaft of Berlin from the 1920s through World War II. [1] It was known for containing thorium, a radioactive metal, and is an example of radioactive quackery.
Environment portal. Ecology portal. v. t. e. Electromagnetic radiation can be classified into two types: ionizing radiation and non-ionizing radiation, based on the capability of a single photon with more than 10 eV energy to ionize atoms or break chemical bonds. [1] Extreme ultraviolet and higher frequencies, such as X-rays or gamma rays are ...
Philips Sonicare 9900 Prestige Electric Power Toothbrush. $368 at Amazon. Best manual for sensitive gums. GUM Technique Deep Clean Toothbrush. $7 at Amazon. See 8 more. Chelsea Perry, DMD, founder ...
The prevalence of gum disease is concerning as gingivitis and periodontitis can have serious consequences for your overall health. According to family dentist Kristy Gretzula, DMD, gum disease may ...
Unprotected experiments in the U.S. in 1896 with an early X-ray tube (Crookes tube), when the dangers of radiation were largely unknown.[1]The history of radiation protection begins at the turn of the 19th and 20th centuries with the realization that ionizing radiation from natural and artificial sources can have harmful effects on living organisms.
The (US) Environmental Protection Agency now has a ruling out about at least five of these chemicals in drinking water that basically sets limits for these chemicals in the water. Within three ...
Periodontal disease, also known as gum disease, is a set of inflammatory conditions affecting the tissues surrounding the teeth. [5] In its early stage, called gingivitis, the gums become swollen and red and may bleed. [5] It is considered the main cause of tooth loss for adults worldwide. [7][8] In its more serious form, called periodontitis ...
In health, the junctional epithelium creates the most coronal attachment of the gum tissue to the tooth at or near the cementoenamel junction. In the established lesion of periodontal disease, the connective tissue lying subjacent to the junctional epithelium is nearly destroyed, failing to properly support the epithelium and buttress it ...