LOCAL ANESTHESIA OSCE/ BOARD
EXAM QUESTIONS AND ANSWERS
Which of the following statements is true concerning the gauge of needles?
A. Needle gauge refers to the radius of the lumen of the needle.
B. A 30-gauge needle has a larger internal diameter than a 25-gauge needle.
C. The smaller the number, the greater the diameter of the lumen of the needle.
D. 27-gauge needles have the highest rate of deflection and breakage in dentistry. -
Correct Answers -C. The smaller the number, the greater the diameter of the lumen of
the needle.
What is the approximate pH of local anesthetic solutions WITHOUT vasoconstrictors?
A. 3.5
B. 6.5
C. 7.4
D. 10 - Correct Answers -B. 6.5
What is the approximate pH of local anesthetic solutions WITH vasoconstrictors?
A. 3.5
B. 6.5
C. 7.4
D. 10 - Correct Answers -A. 3.5
Over 50% of medical emergencies occurring in a dental office occur following which
procedure?
A. Extraction
B. Root canal therapy
C. Periodontal surgery
D. Local anesthetic administration - Correct Answers -D. Local anesthetic administration
what causes disengagement of harpoon? - Correct Answers -dull harpoon, excess force
during aspiration, not engaging hard enough during setting up
sticky stoppers were common when manufactures used what to lubricate stopper? and
now we use what? - Correct Answers -paraffin
wax silicone
local infiltration is? - Correct Answers -small nerve endings, interproximal papilla
EXAM QUESTIONS AND ANSWERS
Which of the following statements is true concerning the gauge of needles?
A. Needle gauge refers to the radius of the lumen of the needle.
B. A 30-gauge needle has a larger internal diameter than a 25-gauge needle.
C. The smaller the number, the greater the diameter of the lumen of the needle.
D. 27-gauge needles have the highest rate of deflection and breakage in dentistry. -
Correct Answers -C. The smaller the number, the greater the diameter of the lumen of
the needle.
What is the approximate pH of local anesthetic solutions WITHOUT vasoconstrictors?
A. 3.5
B. 6.5
C. 7.4
D. 10 - Correct Answers -B. 6.5
What is the approximate pH of local anesthetic solutions WITH vasoconstrictors?
A. 3.5
B. 6.5
C. 7.4
D. 10 - Correct Answers -A. 3.5
Over 50% of medical emergencies occurring in a dental office occur following which
procedure?
A. Extraction
B. Root canal therapy
C. Periodontal surgery
D. Local anesthetic administration - Correct Answers -D. Local anesthetic administration
what causes disengagement of harpoon? - Correct Answers -dull harpoon, excess force
during aspiration, not engaging hard enough during setting up
sticky stoppers were common when manufactures used what to lubricate stopper? and
now we use what? - Correct Answers -paraffin
wax silicone
local infiltration is? - Correct Answers -small nerve endings, interproximal papilla
