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).
jail. 1. a prison, esp. one for the detention of persons awaiting trial or convicted of minor offenses. 2. to take into or hold in lawful custody; imprison. [1225â75; Middle English gaiole, jaiole, jaile gaiole, Old French jaiole *gaviola, alter. of *caveola, diminutive of Latin cavea cage; see-ole 1 ]. jailâ²aâ¢ble, adj.