2. Mosby’s The problem(s) with topical anesthesia is(are): Dosage control
Most are esters which makes them susceptible for allergic reactions
Concentrations used exceed concentrations administered by injection
All of the above

3. Mosby’s The problem(s) with topical anesthesia is(are): Dosage control
Most are esters which makes them susceptible for allergic reactions
Concentrations used exceed concentrations administered by injection
All of the above

4. Mosby’s
After a clinician administers a local anesthetic agent near the infraorbital foramen landmark attempting an ASA injection, the following structures will be anesthetized:
Mandibular molars
Mandibular 1st and 2nd premolars
Maxillary molars
Maxillary canines and incisors

5. Mosby’s
After a clinician administers a local anesthetic agent near the infraorbital foramen landmark attempting an ASA injection, the following structures will be anesthetized:
Mandibular molars
Mandibular 1st and 2nd premolars
Maxillary molars
Maxillary canines and incisors

6. Mosby’s Local anesthetic agents prevent depolarization by:
Blocking the sodium–potassium pump
Preventing the transfer of K+ ions from exiting the nerve cell membrane
Preventing transfer of Na+ ions from the interior of the nerve to the exterior
Preventing transfer of Na+ ions from the exterior of the nerve to the interior

7. Mosby’s Local anesthetic agents prevent depolarization by:
Blocking the sodium–potassium pump
Preventing the transfer of K+ ions from exiting the nerve cell membrane
Preventing transfer of Na+ ions from the interior of the nerve to the exterior
Preventing transfer of Na+ ions from the exterior of the nerve to the interior

8. Mosby’s
The purpose of aspirating before injecting a local anesthetic solution is to prevent:
Allergic reactions
Intravascular injections
Traumatic injections
Trismus

9. Mosby’s
The purpose of aspirating before injecting a local anesthetic solution is to prevent:
Allergic reactions
Intravascular injections
Traumatic injections
Trismus

10. Mosby’s
The following injection(s) should be administered when scaling and root planing of a mandibular second molar:
Mental nerve block
Inferior alveolar nerve block
Long buccal
Nasopalatine
PSA

11. Mosby’s
The following injection(s) should be administered when scaling and root planing of a mandibular second molar:
Mental nerve block
Inferior alveolar nerve block
Long buccal
Nasopalatine
PSA

12. Mosby’s
Which of the following nerves should be adequately anesthetized to scale and root-debride a maxillary first molar?
Greater Palatine/PSA
Long Buccal/Greater Palatine/Nasopalatine
PSA/MSA/Greater Palatine
ASA/MSA/Greater Palatine
PSA/MSA/Long Buccal

13. Mosby’s
Which of the following nerves should be adequately anesthetized to scale and root-debride a maxillary first molar?
Greater Palatine/PSA
Long Buccal/Greater Palatine/Nasopalatine
PSA/MSA/Greater Palatine
ASA/MSA/Greater Palatine
PSA/MSA/Long Buccal

14. Mosby’s
The type and size of a nerve play an important part in the development of adequate anesthesia. All of the following are true, except one. Which one is this exception?
Myelinated nerves require a greater concentration to be blocked
Myelinated nerves require less time to be blocked
Myelinated nerves are the first to regain sensation
Myelinated nerves are the last to be blocked

15. Mosby’s
The type and size of a nerve play an important part in the development of adequate anesthesia. All of the following are true, except one. Which one is this exception?
Myelinated nerves require a greater concentration to be blocked
Myelinated nerves require less time to be blocked
Myelinated nerves are the first to regain sensation
Myelinated nerves are the last to be blocked

16. Mosby’s The potency of an anesthetic agent is primarily due to its:
Water solubility
Protein solubility
Lipid solubility
Carbohydrate solubility

17. Mosby’s The potency of an anesthetic agent is primarily due to its:
Water solubility
Protein solubility
Lipid solubility
Carbohydrate solubility

18. Mosby’s
What nerve is involved when anesthetizing the facial gingiva of the maxillary canine?
Middle superior alveolar nerve
Nasopalatine nerve
Infraorbital nerve
Anterior superior alveolar nerve
Inferior alveolar nerve

19. Mosby’s
What nerve is involved when anesthetizing the facial gingiva of the maxillary canine?
Middle superior alveolar nerve
Nasopalatine nerve
Infraorbital nerve
Anterior superior alveolar nerve
Inferior alveolar nerve

21. Dental Decks
Which of the following statements best describes the mechanism of action of local anesthetics on the nerve axon?
a. Decreases sodium uptake through sodium channels of the axon
b. Increases potassium outflow from inside to outside the nerve
c. Increases the membrane’s permeability to sodium
d. Increases the excitability of the nerve axon

22. Dental Decks
Which of the following statements best describes the mechanism of action of local anesthetics on the nerve axon?
a. Decreases sodium uptake through sodium channels of the axon
b. Increases potassium outflow from inside to outside the nerve
c. Increases the membrane’s permeability to sodium
d. Increases the excitability of the nerve axon

23. Dental Decks
Local anesthetics theoretically should be less effective in acutely inflamed tissue than in normal tissue because in inflamed tissue what happens?
a. The pH rises, thus inactivating the anesthetic
b. The pH rises, thus decreasing available free base
c. The pH decreases, thus decreasing available free base
d. The pH remains the same, the extracellular fluid dilutes the anesthetic

24. Dental Decks
Local anesthetics theoretically should be less effective in acutely inflamed tissue than in normal tissue because in inflamed tissue what happens?
a. The pH rises, thus inactivating the anesthetic
b. The pH rises, thus decreasing available free base
c. The pH decreases, thus decreasing available free base
d. The pH remains the same, the extracellular fluid dilutes the anesthetic

25. Dental Decks
All of the following are advantages of using nitrous oxide analgesia EXCEPT one. Which one is the EXCEPTION?
a. Rapid onset of action
b. It is not titratable
c. Rapid and complete recovery
d. Elevates pain threshold

26. Dental Decks
All of the following are advantages of using nitrous oxide analgesia EXCEPT one. Which one is the EXCEPTION?
a. Rapid onset of action
b. It is not titratable
c. Rapid and complete recovery
d. Elevates pain threshold

27. Dental Decks
Classis studies with early anesthetics indicates the presence of four stages, which are differentiated through increasing influence on reflex activity, muscle tone, and respiration. Stage I and II constitute anesthetic induction; keeping the patient at stage III is anesthetic maintenance.
Both statements are TRUE
Both statements are FALSE
The 1st is TRUE, the 2nd FALSE
The 1st FALSE, 2nd TRUE

28. Dental Decks
Classis studies with early anesthetics indicates the presence of four stages, which are differentiated through increasing influence on reflex activity, muscle tone, and respiration. Stage I and II constitute anesthetic induction; keeping the patient at stage III is anesthetic maintenance.
Both statements are TRUE
Both statements are FALSE
The 1st is TRUE, the 2nd FALSE
The 1st FALSE, 2nd TRUE