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Lead in the bones, teeth, hair, and nails is bound tightly and not available to other tissues, and is generally thought not to be harmful. In adults, 94% of absorbed lead is deposited in the bones and teeth, but children only store 70% in this manner, a fact which may partially account for the more serious health effects on children.
Biting your nails is no picnic for your teeth, either. "Constant biting can lead to poor dental occlusion," says Richard Scher, M.D., an expert in nail disorders, "so the biter's teeth shift out ...
Bad Idea Jeans — a commercial featuring scenes of people discussing what can be considered "bad ideas" (for example, "Thought about it and even though it's over, I'm gonna tell my wife about the affair."). After each scene, white text on a black background reads "BAD IDEA". Each scene also zooms in on each person wearing said jeans.
Tooth ankylosis. Tooth ankylosis refers to a fusion between a tooth and underlying bony support tissues. In some species, this is a normal process that occurs during the formation or maintenance of the dentition. [1] By contrast, in humans tooth ankylosis is pathological, whereby a fusion between alveolar bone and the cementum of a tooth occurs.
Dental radiography. Dental radiographs, commonly known as X-rays, are radiographs used to diagnose hidden dental structures, malignant or benign masses, bone loss, and cavities . A radiographic image is formed by a controlled burst of X-ray radiation which penetrates oral structures at different levels, depending on varying anatomical densities ...
Pericoronitis. Pericoronitis associated with the lower right third molar (wisdom tooth). Pericoronitis is inflammation of the soft tissues surrounding the crown of a partially erupted tooth, [1] including the gingiva (gums) and the dental follicle. [2] The soft tissue covering a partially erupted tooth is known as an operculum, an area which ...
Onychophagia, or nail biting, is a pretty common habit, affecting an estimated 20 to 30 percent of the population. Onychophagia, or nail biting, is a pretty common habit, affecting an estimated 20 ...
Onychomadesis is a periodic idiopathic shedding of the nails beginning at the proximal end, possibly caused by the temporary arrest of the function of the nail matrix. [1] : 784 [2] : 660 One cause in children is hand, foot, and mouth disease. [3] This generally resolves without complication.