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Procedures such as laceration repair, which at one time required the use of painful infiltrative anesthetics, can now be accomplished safely and comfortably with the use of topical anesthetics. An additional advantage of topical anesthetics in laceration repair is that wound margins are not distorted.
Answer Wiki. There are a number of different topical anesthetics available over the counter. The choice depends on what it is being used for. Usually we use topical anesthetics immediately prior to a painful procedure such as an injection or a laser procedure. For children we may apply a topical anesthetic before surgery but only to minimize the ouch of the local anesthetic injection.