Chronic snorting of cocaine and use of methamphetamines can cause abnormal changes in enamel. Swimmers who spend a lot of time in overchlorinated pools can lose tooth enamel, as can people who work with acids. Excess fluoride ingestion (fluorosis) during childhood can cause mottling of the enamel. Damaged tooth enamel can allow bacteria to more easily invade the tooth and form a cavity.
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International Airports. Vancouver International Airport is located in Richmond and is connected to downtown Vancouver via car or the Canada Line, which shuttles visitors from Waterfront Terminal in downtown Vancouver to YVR in 26 minutes.It is serviced by regional and international airlines.oal Harbour Airport (CXH), in downtown Vancouver, is conveniently located near the Canada Place cruise ship terminal. Several floatplane and helicopter operators offer scheduled service to Vancouver's harbour (and some to YVR) from Victoria, Nanaimo, Whistler, the Sunshine Coast and Gulf Islands.