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).
A public building used for the confinement of people convicted of serious crimes. Prison is a place used for confinement of convicted criminals. Aside from the death penalty, a sentence to prison is the harshest punishment imposed on criminals in the United States.onfinement in prison, also known as a penitentiary or correctional facility, is the punishment that courts most commonly impose for serious crimes, such as felonies.