CDCA Board Local Anesthesia Exam |
Questions and Answers Rated A+ |
2026/2027 Guide
What is the possible cause of pain upon removal of the needle? -
Correct Answer - A barb
Why don't we insert the needle to the hub? - Correct Answer - It is the
weakest point and is most likely to break
What tissue is topical anesthetic least effective? - Correct Answer -
Keratinized or palatial tissue
What part of the syringe indicates it is an aspirating syringe? - Correct
Answer - Harpoon and thumb ring
How is the needle usually oriented? - Correct Answer - Bevel towards
the bone.
What is the proper and safest way to recap the needle? - Correct
Answer - One handed scoop method or using a needle shield.
, Local anesthetics decrease depolarization phase of the action potential.
What happens during depolarization? - Correct Answer - Sodium and
potassium cells are unbalanced
What is the difference between a nerve block and local infiltration? -
Correct Answer - The nerve block anesthetizes an entire region.
Infiltration anesthetizes 1-2 teeth.
How much epinephrine in one cartridge of 2% Lidocaine 1:100,000? -
Correct Answer - 1. Epi 1:100,000- 1g= 1,000mg. 2. 1,000 mg/ 100,000.
= 0.01mg/ml x1.8ml =0.018 mg
Why is infiltration more effective on the maxillary than on the mandible? -
Correct Answer - The bone is less dense on the maxilla
Which anesthetic is not an amide? - Correct Answer - Procaine (all
amides have an "i" in prefix)
A bubble in the cartridge with an extruded plunger means what? -
Correct Answer - The solution was frozen
Where are neuron impulses first started? - Correct Answer - The first
node of ranvier.
Questions and Answers Rated A+ |
2026/2027 Guide
What is the possible cause of pain upon removal of the needle? -
Correct Answer - A barb
Why don't we insert the needle to the hub? - Correct Answer - It is the
weakest point and is most likely to break
What tissue is topical anesthetic least effective? - Correct Answer -
Keratinized or palatial tissue
What part of the syringe indicates it is an aspirating syringe? - Correct
Answer - Harpoon and thumb ring
How is the needle usually oriented? - Correct Answer - Bevel towards
the bone.
What is the proper and safest way to recap the needle? - Correct
Answer - One handed scoop method or using a needle shield.
, Local anesthetics decrease depolarization phase of the action potential.
What happens during depolarization? - Correct Answer - Sodium and
potassium cells are unbalanced
What is the difference between a nerve block and local infiltration? -
Correct Answer - The nerve block anesthetizes an entire region.
Infiltration anesthetizes 1-2 teeth.
How much epinephrine in one cartridge of 2% Lidocaine 1:100,000? -
Correct Answer - 1. Epi 1:100,000- 1g= 1,000mg. 2. 1,000 mg/ 100,000.
= 0.01mg/ml x1.8ml =0.018 mg
Why is infiltration more effective on the maxillary than on the mandible? -
Correct Answer - The bone is less dense on the maxilla
Which anesthetic is not an amide? - Correct Answer - Procaine (all
amides have an "i" in prefix)
A bubble in the cartridge with an extruded plunger means what? -
Correct Answer - The solution was frozen
Where are neuron impulses first started? - Correct Answer - The first
node of ranvier.
