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The local anesthesia commonly used in dentistry is a lidocaine 2% with a 1:100,000 epinephrine. this anesthesia will wear of within 1 1/2 to 2 hours after it is given. There are however some more long acting anesthesia. I any event the se local anesthesia should wear of at 6-hours at the longest.

There are some reports that certain types of anesthesia may produce abnormally long anesthesia. These however need more proof and studies.

Numbness that persist till the next day or day occurring a few days after must be reported to the dentist. This is a relatively common postoperative occurrence after impacted lower third molar removal. In most cases the the sensation will return eventually.

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15y ago

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