How long will numbing medicine take to wear off after a tooth filling?

Anesthetic: How long a local anesthetic last depends on the type, amount and what type of injection. Usually it last a few hours but there are some longer lasting anesthetics that may last 7 hours or more. There are medications that will lessen the duration of the anesthetic . The dentist can give this after the procedure is completed, but it requires another injection.

1--3hrs: Depends on how long you were in the chair and what type of anesthesia was used. Also lower jaw takes longer than upper jaw.

Varies: Varies based on a few things. Type of anesthesia and how delivered: locally placed, or regional block.The block will last longer. The various types can last from lass than 1 hour to up to 8 hours. Also, there is variation in each individual's ability to metabolize the anesthetic.Typically, if you take heavier duty medications on a regular basis for systemic problems, you will metabolize it faster.

2 to 4 hours: and some types like articaine can last up to 7-8 hours.

Varies: depending on which numbing medicine is used and on the individual.