Chapter 6 Topical Anesthetic Agents
1-2 minutes
To achieve the optimal anesthetic effect, topical anesthesia should remain at the site of application for _______.
2-3 mm
Topical anesthesia will anesthetize the affected area _______ into the tissue.
higher
Topical anesthetics have a _________ concentration of anesthetic than their equivalent in an injectable form. Topical anesthetics do not contain a vasoconstrictor.
Oraqix
Which of the following is a eutectic mixture (of lidocaine and prilocaine) that will thicken into a gel once inserted into a periodontal pocket, relieving pain associated with nonsurgical periodontal therapy.
Tetracaine hydrochloride
Which topical anesthetic has the longest average duration that has an average duration of 45 minutes?
Benzocaine
Which topical anesthetic has the most rapid onset of action, that usually takes place within 30 seconds?
Dyclonine hydrochloride
Which topical anesthetic is not classified as an ester or an amide, but as a ketone?
20 minutes
A patient who has just been administered Oraqix gel (2.5% lidocaine and 2.5% prilocaine) can expect a comfortable duration of anesthesia of approximately _______.
rare
Allergic reactions (even to the esters bezocaine and tetracaine) to topical anesthetic are _______.
cardiac arrest
Bradycardia (heart beating too slowly) and hypotension are cardiovascular consequences in a toxic overdose of topical anesthetic and may, in some cases, lead to ___________.
topical
Children, the elderly, and medically compromised patients are most susceptible to adverse reactions to ________ anesthetic.
systemic
Dizziness, tinnitus and involuntary muscular activity are _________ reactions to topical anesthetic.