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The enamel is fragile, the teeth appear yellow or brown, and surface stains build up more readily. [1] Dentinogenesis imperfecta is a defect of dentin formation, and the teeth may be discolored yellow-brown, deep amber or blue-grey with increased translucency. [1] Dentinal dysplasia is another disorder of dentin.
Since at least the mid-19th century, doctors have known that silver or silver compounds can cause some areas of the skin and other body tissues to turn grey or blue-gray. [9] [10] Argyria occurs in people who ingest or inhale silver in large quantities over a long period (several months to many years). People who work in factories that ...
Leukoplakia may be white, whitish yellow or grey. [29] The size can range from a small area to much larger lesions. [ 29 ] The most common sites affected are the buccal mucosa, the labial mucosa and the alveolar mucosa , [ 30 ] although any mucosal surface in the mouth may be involved. [ 2 ]
Teeth whitening strips are easy-to-use, peel-and-stick strips that you wear on your teeth for 15 to 30 minutes each day. "Most kits come with a 30-day supply and are relatively easy to use," says ...
Tooth whitening or tooth bleaching is the process of lightening the colour of human teeth. [1] Whitening is often desirable when teeth become yellowed over time for a number of reasons, and can be achieved by changing the intrinsic or extrinsic colour of the tooth enamel. [2]
The "very mild" (and most common) form of fluorosis, is characterized by small, opaque, "paper white" areas scattered irregularly over the tooth, covering less than 25% of the tooth surface. In the "mild" form of the disease, these mottled patches can involve up to half of the surface area of the teeth.