Tooth whitening enamel layer may also be gradually thinned or even perforated by the various forms of tooth wear. Teeth may be darkened by a buildup of surface stains (extrinsic staining), which hides the natural tooth color; or the tooth itself may discolor (intrinsic staining). Extrinsic stains can become internalised through enamel defects or cracks or as a result of dentine becoming exposed but most extrinsic stains appear to be deposited on or in the dental pellicle. Causes of extrinsic staining include: Changes in the thickness of the dental hard tissues would result in intrinsic discolouration. There are a few causal factors
The Outermost House rebuild the house and is now seeking a suitable location for the new "Fo'castle." 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;