CRDTS Local Anesthesia Practice Test

These questions are part of the practice quiz. Start practicing

• What is the brand name for Lidocaine?
• How does a self-aspirating syringe function during local anesthesia?
• What are the landmarks for the inferior alveolar nerve block?
• Sodium bisulfite is used as a preservative in local anesthetic solutions only when what is added to the solution?
• Ongoing numbness of the anterior 2/3 of tongue is caused by which nerve being anesthetized?
• Which nerve anesthetizes the hard palate?
• The mental foramen is associated with which nerves?
• For scaling and root planing on teeth numbers 2 through 4, which injections are typically required?
• Which nerve block is commonly associated with a long-needle technique and targets the mandibular nerve region?
• PSA injection should not be given in which condition?
• If the tissue pH is low due to infection, what happens to LA effectiveness?
• Which nerve is not a branch of the mandibular nerve?
• The inferior alveolar nerve travels through which foramen?
• Name a sulfa antibiotic.
• When giving the IA injection, where is the solution deposited?
• To numb the hard palate on one side, which nerve block is most directly responsible?
• Which factor can cause needle breakage during use?
• A 1.8 mL cartridge contains how many milligrams of epinephrine when the solution is 3%?
• Topical anesthetics are least effective on which tissue?
• What occurs during depolarization?
• A patient develops a lesion on the lower lip the day after local anesthesia. What is the most likely cause?
• Which statement about Oraqix maximum dose is correct?
• If a patient has a PABA allergy, which topical anesthetic should you select?
• Where is epinephrine naturally found in the body?
• In infiltration, the long needle depth is typically how much of its length to reach bone?
• Which medication is commonly used as an oral histamine blocker for delayed reactions?
• If the patient has a PABA allergy, which topical anesthetic should you use?
• Which local anesthetic biotransforms in the liver, kidneys, and lungs and is less toxic than other amides, suitable for epinephrine‑sensitive patients requiring pulpal anesthesia longer than 60 minutes?
• If you administered two carpules of Lidocaine 1:100,000 how much Lidocaine did the patient receive?
• Where should used needles be disposed of?
• Patient experienced no pain until local anesthesia was deposited. Why?
• What is the shelf life of local anesthetics with epinephrine?
• What is the brand name for 4% Prilocaine with vasoconstrictor?
• Where is a hematoma most likely to form?
• Which local anesthetic should you not use in patients with oxygen problems?
• What is the maximum dose of epinephrine for a cardiac patient?
• What post-operative instructions would you give to a patient with a hematoma?
• Which nerve block is associated with numbness of the lower lip?
• During depolarization, which ion movement occurs?
• If three carpules are used, what is the total volume?
• Which injection is used to numb the palatal tissues behind the maxillary second premolar?
• Which nerve block is most commonly associated with numbness of the lower lip?
• Dry cornea can result from anesthetizing which nerve?
• Which statement about vasopressors used with local anesthetics is NOT true?
• Which local anesthetic provides pulpal anesthesia for at least 90 minutes and is used for management of postoperative pain?
• Which divisions of the trigeminal nerve are sensory?
• When performing SRP on the lingual of tooth 13, what is the injection site for infiltration?
• The mental nerve is a terminal branch of which nerve?
• How many milligrams of Mepivacaine are delivered when 3 carpules are administered, given that 1 carpule contains 54 mg?
• For anesthesia of maxillary incisors, the proper ASA injection site is:
• How many milligrams of Mepivacaine are contained in two carpules of Mepivacaine 3% solution, given 3% equals 30 mg per cc and each cartridge is 1.8 mL?
• What are the two most common types of adverse responses to drug administration?
• Prilocaine is marketed under which brand name?
• What is a possible cause of pain upon removal of the needle?
• What is a likely consequence of depositing LA too rapidly?
• For a patient with hyperthyroidism, which practice is recommended?
• Where are most local anesthetics deposited?
• A 1.8 mL cartridge contains how many milligrams of epinephrine when the solution is 1%?
• Why does local anesthesia fail to work near an abscessed tooth?
• How do local anesthetics decrease depolarization phase of the action potential?
• What can cause a droopy eyelid (ptosis) after dental anesthesia?
• For maxillary incisor anesthesia via infiltration, where is the injection placed?
• What antioxidant prevents biodegradation of local anesthetics?
• Which of the following represents the shortest duration amide anesthetic among those listed?
• Local anesthetics achieve conduction blockade by targeting which ion channel?
• Which nerve block is described for anesthesia of maxillary incisors using the height of the mucobuccal fold mesial to the canine?
• An electric shock sensation during injection is most commonly caused by hitting which structure?
• Prilocaine is biotransformed in which organs?
• What function does sodium chloride provide to local anesthesia solutions?
• Administering a vasoconstrictor would result in which of the following?
• The mandibular foramen is a passage for which nerves?
• The lingual nerve provides sensation to which structure?
• What is the maximum dose for Oraqix?
• What is the most common local anesthetic without epinephrine?
• Saltatory conduction describes the rapid conduction of impulses along what type of nerve fibers?
• What is the total volume of local anesthetic in two carpules?
• Where does the maxillary nerve pass through in the skull?
• Which phase of the action potential is affected by local anesthetics?
• If a patient is allergic to sulfites, which local anesthetic would you avoid?
• During an injection, how should the bevel of the needle be oriented relative to the bone?
• A 1.7 mL cartridge of Mepivacaine at 3% concentration contains how many milligrams of anesthetic?
• A single cartridge of Mepivacaine 3% contains how many milligrams of anesthetic, given 3% equals 30 mg per mL and the cartridge volume is 1.8 mL?
• Which nerve block can numb the lower lip and chin region?
• There is a greater chance of overdose with this type of local anesthesia.
• Assuming two carpules total 72 mg Lidocaine, how much Lidocaine is in one carpule?
• A delayed cutaneous reaction after epinephrine administration is most effectively managed with which agent?
• Which local anesthetic is considered safe for use during pregnancy?
• The pharmacological action of a local anesthetic occurs at which part of the nerve?
• Depositing local anesthetic with a vasodepressor primarily serves to
• Which injection anesthetizes the anterior portion of the hard palate from the mesial of the right first premolar to mesial of the left premolar?
• Between 25-gauge and 30-gauge needles, which has the smaller lumen?
• What causes local anesthesia to work?
• Which injection would you MOST LIKELY use a long needle?
• Pain on injection followed by immediate anesthesia is most likely caused by which scenario?
• Which brand name corresponds to Mepivacaine (Carbocaine and Polocaine)?
• What is the first-line treatment for systemic anaphylaxis?
• What is the maximum dose of epinephrine for a normal patient?
• Which antiseptic should not be used with local anesthesia?
• Why would you use caution with an amide local anesthetic if a patient has liver disease?
• Why is infiltration more effective in the maxilla than the mandible?
• Which local anesthetic is 1.5 times more potent than Lidocaine and biotransforms in plasma and liver, with reports of paresthesia and not used on children under 4 or for blocks?
• Which notation indicates the concentration of epinephrine used in the anesthetic?
• Which division of the trigeminal nerve contains motor fibers?
• Which factor explains why maxillary infiltrations are generally more successful than mandibular infiltrations?
• When do you aspirate during an injection?
• Which best describes topical anesthesia?
• Which class of local anesthetics has the highest incidence of allergic reactions?
• What is the volume of a single carpule of local anesthetic?
• Which local anesthetic is associated with methemoglobinemia most often?
• Facial nerve paralysis can result from injecting into which structure during an infraorbital block?
• If a patient immediately starts gasping for air and their blood pressure drops below 90/60 mmHg, what would you do to manage the allergic reaction?
• What is the primary rationale for caution with amide local anesthetics in patients with liver disease?
• True or False: An organic base is used for psychogenic pain.
• Which nerve is primarily responsible for sensation to the anterior two-thirds of the tongue when numbness persists?
• Esters are metabolized by what process?
• What epinephrine concentration is commonly used in dental local anesthetics for vasoconstriction?
• What is the maximum safe duration for leaving a 20% lidocaine patch in place?
• Post-hematoma care includes which action?
• Trismus is best defined as which of the following?
• Which body system naturally produces epinephrine?
• Long needles are used for which injections?
• Articaine is marketed under which brand name?
• Methylparaben preservatives in topical anesthetics may cause an allergy to which group?
• If asked to scale tooth #8, where would you inject?
• Facial nerve paralysis can occur when which technique is used?
• Myelinated nerves help local currents travel ______ than an unmyelinated nerve; it occurs by current leaps from node to node called ______ conduction.
• What depth is the needle typically inserted for infiltration to contact bone?
• Where does the nasopalatine nerve pass through in the skull?
• What is the brand name for Articaine?
• Which sequence lists amide local anesthetics from shortest to longest duration?
• Which method is least preferable for recapping a needle?
• Where is the lingual infiltration injection site for tooth 13?
• The greater palatine injection is primarily used to numb which area?
• If a patient develops a dry eye after local anesthesia, which nerve is most likely anesthetized?
• Which local anesthetic is both an amide and an ester?
• For achieving hemostasis at a surgical site, which infiltration procedure is used?
• Trismus after dental injection is most likely due to involvement of which area or structures?
• All of the nerve blocks are maxillary EXCEPT?
• What is used as a preservative of local anesthetic?
• For a hypertensive patient, what is the maximum number of carpules containing 1:100,000 epinephrine that may be used?
• How much epinephrine is in one carpule of 1:100,000?
• What injections are needed to anesthetize the entire palate on one side?
• Which nerve block targets the incisive papilla and anterior palatal tissue?
• Which injection carries the risk of hitting the pterygoid plexus if the needle is advanced too far?
• Which nerve provides sensation to the soft palate when blocked?
• The shelf life of local anesthetics without epinephrine is how many months?
• What is the brand name for Bupivacaine?
• What is the action of a vasodepressor?
• Which injection is not typically required for SRP on maxillary teeth 2 through 4?
• The injection site for lingual infiltration of maxillary molars is:
• How do you manage trismus?
• Which needle is typically used for infiltration anesthesia?
• Which local anesthetic's brand name is Marcaine?
• Which statement accurately describes the relationship between needle gauge and lumen size?
• Which local anesthetic is often associated with longer duration for postoperative pain management?
• In a 1.8 mL cartridge containing 2% epinephrine, how many milligrams of epinephrine are present?
• Where does the mandibular nerve pass through in the skull?
• Which local anesthetic is typically the longest-acting among the listed amides?
• All of the following are true regarding vasoconstrictors added to anesthetics except:
• If the anesthetic is deposited into the parotid gland during a block, which complication is most likely?
• What is the anatomical location for a long buccal injection?
• What areas does the greater palatine injection anesthetize?
• Which nerve is not associated with the mandibular nerve branch?
• A reaction to the act of drug administration rather than the drug itself is called?
• What precaution reduces the risk of facial nerve paralysis during an infraorbital block?
• Name a topical anesthetic.
• PSA injections have a higher risk of hematoma formation than IA injections.
• The mandibular division of the trigeminal nerve is:
• Delayed skin reactions to epinephrine can be managed with which of the following?
• Which statement about epinephrine use in hypertensive patients is true?
• For a patient with an allergy to red wine, which local anesthetic would be preferred?
• Which injection is used to anesthetize the linguals of the maxillary anterior teeth?
• How is systemic anaphylaxis managed?
• Which root of the maxillary first molar may not be anesthetized with a PSA nerve block?
• What are the three divisions of the trigeminal nerve?
• What areas does the PSA nerve block anesthetize?
• What causes a hematoma and where is it most common?
• Lidocaine is marketed under which brand name?
• The area of insertion for the buccal injection is:
• What is the brand name for Mepivacaine?
• Which local anesthetic should be used for short appointments and is good for use on children and produces pulpal anesthesia?
• Know all the actions of vasopressor
• After the infraorbital injection, the cheek turns white. What happened?
• The PSA innervates the 1st, 2nd, and 3rd maxillary molars, but may not innervate which root?
• The mandibular division of the trigeminal nerve carries which types of fibers?
• What is the primary mechanism by which local anesthetics achieve nerve blockade?
• Which local anesthetic is not an amide?
• What part of the syringe indicates it is an aspirating syringe?
• What is the first sign of local anesthesia toxicity?
• Which local anesthetic's brand name is Septocaine?
• Which organ is the primary site for metabolism of amide local anesthetics?
• Three cartridges of plain Mepivacaine 3% with each cartridge volume 1.7 mL deliver how many milligrams of anesthetic?
• The depth of 2/3 to 3/4 the length of the long needle corresponds to approximately which millimeters for bone contact in infiltration?
• Which enzyme metabolizes ester-type local anesthetics?
• An immediate cutaneous reaction after a drug injection is best treated with which combination?
• What is the suggested deposit rate of local anesthetics?
• A 1.8 mL cartridge of 2% lidocaine contains how many milligrams of lidocaine?
• How much epinephrine is in two carpules?
• The opthalmic division of the trigeminal nerve is:
• Burning on injection can be caused by?
• Which foramen is associated with the exit of the mandibular nerve?
• The maxillary division of the trigeminal nerve is:
• Benzocaine is best classified as which type of local anesthetic?
• The incisive nerve is a terminal branch of which nerve?
• If tooth 15 has a periodontal abscess and the PSA has been given, what other injection is needed to numb the lingual?
• What effect do beta blockers have on blood pressure?
• Which tissue is easiest to anesthetize with topical anesthesia?
• Which sensation is lost first after a dental local anesthetic injection?
• Which injection is used to anesthetize the maxillary anterior soft tissue?
• If the central incisor has a defect on the root, which injection would you give?
• The hematoma is most likely to form in which vascular area during PSA injection?
• Which action is least appropriate when recapping a needle?
• True or False: Benzocaine is absorbed systemically.
• What is the correct technique to recap a needle after use?
• What is another name for the alkalizing agent in local anesthesia solutions?
• Which nerve block is used to anesthetize the lower jaw?
• In a 1.8 mL cartridge containing 3% epinephrine, how many milligrams of epinephrine are present?
• The primary effects of a vasopressor used with local anesthetic include:
• Which injection has the second highest rate of hematoma formation?