1
Wreb Practice Exam 1 LA 2025/2026
Exam Questions and Correct Answers |
New Update
**Which of the following local anesthesic blocks uses pressure anesthesia of the
tissues to reduce pt discomfort?
A. Infraorbital block
B. Inferior alveolar block
C. Buccal block
D. Greater palatine block - 🧠 ANSWER ✔✔D. Greater palatine block
Esters have a shorter half-life than amides due to which of the following?
A. Amides are broke down into the liver
B. Esters are broken down in the blood plasma
C. Esters are eliminated from the body via the kidneys
D. Amides are eliminated from the body via the kidneys - 🧠 ANSWER ✔✔Ccc
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1
STATEMENT. ALL RIGHTS RESERVED
,2
** In the dissociation of local anesthetics, diffusion of the LA occurs best in which
of the following situations?
A. When there are more free base molecules available
B. When the pH is lower in the tissues
C. When there are more cations available
D. When the pH is neutral - 🧠 ANSWER ✔✔Cccc
Which is true of most nitrous oxide and oxygen office systems?
A. The tidal volume refers to the % of nitrous oxide that it takes for the pt to feel
relaxed
B. The scavenger system is hooked up to the saliva ejector
C. When the nitrous oxide runs out the oxygen flow stops
D. When the oxygen runs out the nitrous oxide flow stops - 🧠 ANSWER ✔✔
Allergic reactions are which of the following?
A. Dose related
B. Always depend on previous encounters of allergens
C. Not dose related - 🧠 ANSWER ✔✔
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STATEMENT. ALL RIGHTS RESERVED
, 3
The amount of local anesthetic in ml of 4% Articaine HCL. 1:100,000 epi is which
of the following?
A. 4mg
B. 40mg
C. 54mg
D. 72mg - 🧠 ANSWER ✔✔
You are anesthetizing half of the mouth. You have given an IA no and Buccal no.
When you penetrate to give a PSA no, the patient complains of discomfort. You do
not feel bone resistance but some resistance penetrating and removing the needle.
what might you do to eliminate this discomfort when giving the MSA?
A. Penetrate more slowly
B. Change the needle
C. Align the bevel with the bone
D. Give more anesthetic - 🧠 ANSWER ✔✔
When giving the PSA no, trismus can be caused by penetrating which of the
following muscles?
A. Buccinator
COPYRIGHT©NINJANERD 2025/2026. YEAR PUBLISHED 2025. COMPANY REGISTRATION NUMBER: 619652435. TERMS OF USE. PRIVACY
3
STATEMENT. ALL RIGHTS RESERVED
Wreb Practice Exam 1 LA 2025/2026
Exam Questions and Correct Answers |
New Update
**Which of the following local anesthesic blocks uses pressure anesthesia of the
tissues to reduce pt discomfort?
A. Infraorbital block
B. Inferior alveolar block
C. Buccal block
D. Greater palatine block - 🧠 ANSWER ✔✔D. Greater palatine block
Esters have a shorter half-life than amides due to which of the following?
A. Amides are broke down into the liver
B. Esters are broken down in the blood plasma
C. Esters are eliminated from the body via the kidneys
D. Amides are eliminated from the body via the kidneys - 🧠 ANSWER ✔✔Ccc
COPYRIGHT©NINJANERD 2025/2026. YEAR PUBLISHED 2025. COMPANY REGISTRATION NUMBER: 619652435. TERMS OF USE. PRIVACY
1
STATEMENT. ALL RIGHTS RESERVED
,2
** In the dissociation of local anesthetics, diffusion of the LA occurs best in which
of the following situations?
A. When there are more free base molecules available
B. When the pH is lower in the tissues
C. When there are more cations available
D. When the pH is neutral - 🧠 ANSWER ✔✔Cccc
Which is true of most nitrous oxide and oxygen office systems?
A. The tidal volume refers to the % of nitrous oxide that it takes for the pt to feel
relaxed
B. The scavenger system is hooked up to the saliva ejector
C. When the nitrous oxide runs out the oxygen flow stops
D. When the oxygen runs out the nitrous oxide flow stops - 🧠 ANSWER ✔✔
Allergic reactions are which of the following?
A. Dose related
B. Always depend on previous encounters of allergens
C. Not dose related - 🧠 ANSWER ✔✔
COPYRIGHT©NINJANERD 2025/2026. YEAR PUBLISHED 2025. COMPANY REGISTRATION NUMBER: 619652435. TERMS OF USE. PRIVACY
2
STATEMENT. ALL RIGHTS RESERVED
, 3
The amount of local anesthetic in ml of 4% Articaine HCL. 1:100,000 epi is which
of the following?
A. 4mg
B. 40mg
C. 54mg
D. 72mg - 🧠 ANSWER ✔✔
You are anesthetizing half of the mouth. You have given an IA no and Buccal no.
When you penetrate to give a PSA no, the patient complains of discomfort. You do
not feel bone resistance but some resistance penetrating and removing the needle.
what might you do to eliminate this discomfort when giving the MSA?
A. Penetrate more slowly
B. Change the needle
C. Align the bevel with the bone
D. Give more anesthetic - 🧠 ANSWER ✔✔
When giving the PSA no, trismus can be caused by penetrating which of the
following muscles?
A. Buccinator
COPYRIGHT©NINJANERD 2025/2026. YEAR PUBLISHED 2025. COMPANY REGISTRATION NUMBER: 619652435. TERMS OF USE. PRIVACY
3
STATEMENT. ALL RIGHTS RESERVED
