Anesthesia Quiz 1

To achieve the optimal anesthetic effect, topical anesthesia should remain at the site of application for _______. a. 1 to 2 minutes b. 3 to 5 minutes c. 5 to 10 minutes d. 10 to 12 minutes

a. 1 to 2 minutes

Of the following patients, which is most likely to have a negative reaction to topical anesthetic? a. A child b. A patient of Middle Eastern ancestry c. A patient with type O+ blood d. All of the above

a. A child

Which topical anesthetic has the most rapid onset of action? a. Benzocaine b. Lidocaine c. Dyclonine hydrochloride d. Tetracaine hydrochloride

a. Benzocaine

Which of the following is NOT an ideal property of an oral topical anesthetic? a. It produces dependency on repeated use. b. It remains at the site of application. c. It has an acceptable taste. d. It permits a comfortable (pain-free) application.

a. It produces dependency on repeated use.

Which of the following is a eutectic mixture that will thicken into a gel once inserted into a periodontal pocket, relieving pain associated with nonsurgical periodontal therapy? a. Oraqix (2.5% lidocaine/2.5% prilocaine gel) b. EMLA (2.5% lidocaine/2.5% prilocaine cream) c. Cetacaine (benzocaine, butamben, tetracaine) d. Dyclonine hydrochloride

a. Oraqix (2.5% lidocaine/2.5% prilocaine gel)

The FDA has released a Public Health Advisory alerting consumers to the potential risk of life-threatening or fatal reactions to over-the-counter topical anesthetics. Some of these over-the-counter topical anesthetics are available in concentrations twice the strength of those used in the dental office. a. The first statement is true; the second statement is false. b. The first statement is false; the second statement is true. c. Both statements are true. d. Both statements are false.

a. The first statement is true; the second statement is false.

Topical anesthesia will anesthetize the affected area _______ into the tissue. a. 1 to 2 mm b. 2 to 3 mm c. 3 to 5 mm d. 5 to 7 mm

b. 2 to 3 mm

A toxic overdose of topical anesthetic may result in which of the following? a. Hypertension b. Bradycardia c. Tachycardia d. Both A and B

b. Bradycardia

Mild allergic reactions to topical anesthetic can include _______, _______, and _______. a. hematoma, cyanosis, nausea b. swelling, raised welts, itching c. slurred speech, drowsiness, difficulty breathing d. seizures, unconsciousness, respiratory arrest

b. swelling, raised welts, itching

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 _______. a. 60 minutes b. 45 minutes c. 20 minutes d. 10 minutes

c. 20 minutes

Topical anesthesia is available in many different forms: liquid, gel, spray, and patch. Topical anesthesia distributed in single dose applications decreases the possibility of cross-contamination. a. The first statement is true; the second statement is false. b. The first statement is false; the second statement is true. c. Both statements are true. d. Both statements are false

c. Both statements are true.

Which topical anesthetic is not classified as an ester or an amide, but as a ketone? a. Benzocaine b. Lidocaine c. Dyclonine hydrochloride d. Tetracaine hydrochloride

c. Dyclonine hydrochloride

Allergic reactions to topical anesthetic are _______. a. very common b. somewhat common c. rare d. unheard of

c. rare

Oraqix gel (2.5% lidocaine and 2.5% prilocaine) produces an anesthetic effect within ____________. a. 15 minutes b. 10 minutes c. 5 minutes d. 30 seconds

d. 30 seconds

Drying the mucosa with 2 × 2 gauze, prior to the application of topical anesthesia, assists in _______. a. accurate placement of the topical anesthetic b. increasing the visibility c. increasing the penetration depth to 5 mm d. Both A and B

d. Both A and B

Which of the following are symptoms of a localized reaction to topical anesthetic? a. Irritation, burning, and stinging at the site of application b. Dizziness, tinnitus, and involuntary muscular activity c. Tissue sloughing or discoloration and temporary change in taste perception d. Both A and C

d. Both A and C

Topical anesthetics have a lower concentration of anesthetic than their injectable counterparts. This is necessary because some topical anesthetics contain a vasoconstrictor. a. The first statement is true; the second statement is false. b. The first statement is false; the second statement is true. c. Both statements are true. d. Both statements are false.

d. Both statements are false.

Topical anesthetics are available in a variety of forms. Which method of delivery is most likely to produce a toxic reaction? a. Patch b. Gel c. Applicator swab d. Spray

d. Spray

Which topical anesthetic has the longest average duration? a. Benzocaine b. Lidocaine c. Dyclonine hydrochloride d. Tetracaine hydrochloride

d. Tetracaine hydrochloride

Which of the following is NOT an appropriate use for topical anesthesia? a. To increase comfort during minor dental hygiene procedures b. To reduce a patient's gag reflex while taking dental impressions c. To minimize the pain associated with needle insertion d. To achieve pulpal anesthesia prior to restorative dental procedures

d. To achieve pulpal anesthesia prior to restorative dental procedures