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The word toothbrush was only used in the year 1690 when Anthony Wood wrote
about it. In 1780, William Addis was able to mass produce the toothbrush.
He drilled small holes on a small animal bone, tied some bristles into
small tufts and passed them through the holes and glued them,
and he did this while in prison. When he got out, he sold them in large quantities and became very rich.
In the 1840's, toothbrush was also being mass produced in England, France, Germany and Japan. There were two kinds of brushes
during that time; the cheaper ones were made from pig hair and the more expensive ones from badger
hair.
It is not as flexible as nitrous oxide in that once
the medicine is ingested, it cannot be reversed until the body naturally eliminates the medication.
In the alternative, intravenous sedation can be used for more complicated procedures.
Unconscious sedation is another term used to refer to general anesthesia.
This is used for major dental work such as jaw surgery.
Cases that require general anesthesia are not handled in the dental office.
They are done at hospitals where a full medical staff can easily be available in case of emergencies.
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