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).
in a nutshell even though the terms are often used interchangeably prisons and jails are very different entities a jail is used for short term imprisonment and is usually run by local law enforcement such as sheriffs a prison is used for long term imprisonment and is run by the state or federal governmentven though the terms are often used interchangeably prisons and jails are very different entities a jail is used for short term imprisonment and is usually run by local law enforcement such as sheriffs