Some people who use teeth whiteners may experience tooth sensitivity. That happens when the peroxide in the whitener gets through the enamel to the soft layer of dentin and irritates the nerve of your tooth. In most cases the sensitivity is temporary. You can delay treatment, then try again.
Federal prison. A federal prison is operated under the jurisdiction of a federal government as opposed to a state or provincial body. Federal prisons are used for convicts who violated federal law (U.S., Mexico), inmates considered dangerous (Brazil), or those sentenced to longer terms of imprisonment (Canada).
Federal Bureau of Prisons (ËfÉdÉrÉl ËbjÊÉrÉÊ Év ËprÉªzÉnz) Example sentences containing 'Federal Bureau of Prisons'. Not much more than an hour later, the Britons were in the Federal Bureau of Prisons offices, and down to work.