Which of the Following Is (Are)true About Topical Anesthetics

question 3

Multiple Choice

Which of the following is (are) true about topical anesthetics?

• A) Topical anesthetics are most effective when placed on dry tissue for 1 to 2 minutes.
• B) When applied properly,topical anesthetics can penetrate 2 mm into the tissue.
• C) Topical anesthetics have very limited effect on keratinized tissue,such as the palate.
• D) All of the above are true.
• E) Both A and C are true.

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