Tooth whitening the human eye and brain. Teeth are composed of a surface enamel layer, which is whiter and semitransparent, and an underlying dentin layer, which is darker and less transparent. These are calcified, hard tissues comparable to bone. The natural shade of teeth is best considered as such; an off-white, bone-color rather than pure white. Public opinion of what is normal tooth shade tends to be distorted. Portrayals of cosmetically enhanced teeth are common in the media. In one report, the most common tooth shade in the general population ranged from A1 to A3 on the VITA classical A1-D4 shade guide.
The Outermost House The Outermost House The Outermost House is a book by naturalist writer Henry Beston. It was published in 1928 by Doubleday and Doran and is now published by Henry Holt and Company in New York City. It chronicles a season spent living on the dunes of Cape Cod. Beston's "Fo'castle," the 20x16 beach cottage which served as the setting for the book "The Outermost House", was built in June 1925 and then claimed by the sea in February 1978. Beston (born Henry Beston Sheahan in 1888; died 1968) named the cottage "the Fo'castle" because its ten windows and its commanding