4dd MCQs 200 Dental Anesthesia Dr. Tong Leang 2019

Reviewed by Editorial Team
The ProProfs editorial team is comprised of experienced subject matter experts. They've collectively created over 10,000 quizzes and lessons, serving over 100 million users. Our team includes in-house content moderators and subject matter experts, as well as a global network of rigorously trained contributors. All adhere to our comprehensive editorial guidelines, ensuring the delivery of high-quality content.
Learn about Our Editorial Process
| By Uhsdental
U
Uhsdental
Community Contributor
Quizzes Created: 7 | Total Attempts: 17,260
| Attempts: 281
SettingsSettings
Please wait...
  • 1/200 Questions

    When injecting Local solutionin maxilla on buccal side. The technique is ?

    • Supra periosteal
    • Sup periosteal
    • Sup mucosal
    • Intra osseous
    • Intra septal
Please wait...
About This Quiz

This quiz, titled '4DD MCQs 200 Dental Anesthesia Dr. Tong Leang 2019', assesses knowledge in dental anesthesia. It covers topics such as the effects of benzocaine, methemoglobinemia risks with prilocaine, techniques for maxillary injections, and nerve supply for dental roots. Essential for students preparing for dental licensure exams.

4dd MCQs 200 Dental Anesthesia Dr. Tong Leang 2019 - Quiz

Quiz Preview

  • 2. 

    Primary side effect/toxicities associated with local anesthetic use:?

    • Allergic reactions and systemic toxicity

    • Allergic reactions

    • Systemic toxicity

    • Neither

    Correct Answer
    A. Allergic reactions and systemic toxicity
    Explanation
    Local anesthetics can cause allergic reactions and systemic toxicity as primary side effects. Allergic reactions can range from mild skin rashes to severe anaphylaxis. Systemic toxicity occurs when the local anesthetic is absorbed into the bloodstream in excessive amounts, leading to symptoms such as dizziness, confusion, seizures, and cardiac arrhythmias. These side effects can occur with the use of any local anesthetic, although the risk varies depending on the specific agent used and the individual patient.

    Rate this question:

  • 3. 

    Factors enhancing bupivacaine (Marcaine) toxicity?

    • Pregnancy, presence of calcium channel blockers, arterial hypoxemia, acidosis and hypercarbia

    • Pregnancy

    • Presence of calcium channel blockers

    • Arterial hypoxemia

    • Acidosis and hypercarbia

    Correct Answer
    A. Pregnancy, presence of calcium channel blockers, arterial hypoxemia, acidosis and hypercarbia
    Explanation
    Bupivacaine is a local anesthetic that can cause toxicity in certain situations. Pregnancy can enhance the toxicity of bupivacaine due to physiological changes in the body during pregnancy. Calcium channel blockers can also enhance bupivacaine toxicity by inhibiting the metabolism and elimination of the drug. Arterial hypoxemia, which is low oxygen levels in the blood, can increase the sensitivity to bupivacaine toxicity. Acidosis, an acidic pH in the body, and hypercarbia, high levels of carbon dioxide in the blood, can both decrease the effectiveness of bupivacaine metabolism and clearance, leading to increased toxicity.

    Rate this question:

  • 4. 

    Preferred local anesthetics for local infiltration:?

    • Lidocaine (Xylocaine), ropivacaine (Naropin) and bupivacaine (Marcaine)

    • Lidocaine (Xylocaine)

    • Ropivacaine (Naropin)

    • Bupivacaine (Marcaine)

    Correct Answer
    A. Lidocaine (Xylocaine), ropivacaine (Naropin) and bupivacaine (Marcaine)
    Explanation
    The preferred local anesthetics for local infiltration are lidocaine (Xylocaine), ropivacaine (Naropin), and bupivacaine (Marcaine). These drugs are commonly used for their effectiveness in providing local anesthesia by blocking nerve signals in the area of administration. They have a rapid onset of action, provide sufficient anesthesia duration, and have a favorable safety profile. Lidocaine, ropivacaine, and bupivacaine are widely used in various surgical and dental procedures to ensure patient comfort and pain management.

    Rate this question:

  • 5. 

    Factors that influence lidocaine (Xylocaine) metabolism:?

    • Pregnancy-induced hypertension, hepatic disease, reduced liver blood flow and volatile anesthetics

    • Pregnancy-induced hypertension

    • Hepatic disease

    • Reduced liver blood flow

    • Volatile anesthetics

    Correct Answer
    A. Pregnancy-induced hypertension, hepatic disease, reduced liver blood flow and volatile anesthetics
    Explanation
    The factors that influence lidocaine (Xylocaine) metabolism include pregnancy-induced hypertension, hepatic disease, reduced liver blood flow, and volatile anesthetics. These factors can affect the metabolism of lidocaine in the body, potentially altering its effectiveness and duration of action. Pregnancy-induced hypertension may affect the clearance of lidocaine, while hepatic disease can impair the liver's ability to metabolize the drug. Reduced liver blood flow can also impact lidocaine metabolism, as the liver is responsible for metabolizing and eliminating drugs from the body. Additionally, volatile anesthetics can interact with lidocaine metabolism, potentially affecting its pharmacokinetics.

    Rate this question:

  • 6. 

    Factors which increase local anesthetic CNS toxicities:?

    • Rate of injection, patient receiving mexiletine (Mexitil) when lidocaine (Xylocaine) is used and high PaCO2 (reduced local anesthetic seizure threshold)

    • Hypokalemia

    • Rate of injection

    • Patient receiving mexiletine (Mexitil) when lidocaine (Xylocaine) is used

    • High PaCO2 (reduced local anesthetic seizure threshold)

    Correct Answer
    A. Rate of injection, patient receiving mexiletine (Mexitil) when lidocaine (Xylocaine) is used and high PaCO2 (reduced local anesthetic seizure threshold)
    Explanation
    The factors that increase local anesthetic CNS toxicities are the rate of injection, patient receiving mexiletine (Mexitil) when lidocaine (Xylocaine) is used, and high PaCO2 (reduced local anesthetic seizure threshold). These factors can potentiate the toxic effects of the local anesthetic, leading to CNS toxicity. Rapid injection can result in a higher concentration of the drug reaching the CNS, increasing the risk of toxicity. Mexiletine can interact with lidocaine, prolonging its effects and increasing the risk of toxicity. High PaCO2 levels can lower the seizure threshold, making the CNS more susceptible to the toxic effects of the local anesthetic.

    Rate this question:

  • 7. 

    Factor(s) that reduce lidocaine (Xylocaine) seizure threshold.?

    • Hypoxemia, Hyperkalemia and Acidosis

    • Hypoxemia

    • Hyperkalemia

    • Acidosis

    Correct Answer
    A. Hypoxemia, Hyperkalemia and Acidosis
    Explanation
    Hypoxemia, hyperkalemia, and acidosis are all factors that can reduce the seizure threshold of lidocaine (Xylocaine). Hypoxemia refers to low levels of oxygen in the blood, which can impair brain function and increase the likelihood of seizures. Hyperkalemia is an elevated level of potassium in the blood, which can disrupt the normal electrical activity in the brain and lead to seizures. Acidosis is a condition characterized by increased acidity in the blood, which can also interfere with brain function and lower the seizure threshold. Therefore, the presence of any of these factors can make a person more susceptible to experiencing seizures when using lidocaine.

    Rate this question:

  • 8. 

    Agents not recommended for Bier block:

    • Chloroprocaine (Nesacaine), mepivacaine (Carbocaine), and bupivacaine (Marcaine)

    • Chloroprocaine (Nesacaine

    • Mepivacaine (Carbocaine)

    • Bupivacaine (Marcaine)

    Correct Answer
    A. Chloroprocaine (Nesacaine), mepivacaine (Carbocaine), and bupivacaine (Marcaine)
  • 9. 

    Clinical presentations suggestive of local anesthetic allergies:

    • All are correct

    • Rash

    • Laryngeal edema

    • Bronchospasm

    • Urticarial and possibly hypotension

    Correct Answer
    A. All are correct
    Explanation
    The correct answer is that all of the clinical presentations mentioned are suggestive of local anesthetic allergies. These symptoms include rash, laryngeal edema, bronchospasm, urticarial, and possibly hypotension.

    Rate this question:

  • 10. 

    Local anesthetic lipophilicity and effectiveness of epinephrine on local anesthesia:

    • More lipophilic anesthetics benef ileast by epinephrine in addition to local anesthetic solutions®

    • More lipophilic anesthetics benefit most by epinephrine in addition to local anesthetic solutions

    Correct Answer
    A. More lipophilic anesthetics benef ileast by epinephrine in addition to local anesthetic solutions®
  • 11. 

    The axons of peripheral nerve is supported by

    • Support by Connective tissue

    • Supported by cell

    • Support by muscle

    • Support by blood

    Correct Answer
    A. Support by Connective tissue
    Explanation
    The correct answer is support by connective tissue because peripheral nerves are composed of axons bundled together and surrounded by connective tissue called the endoneurium, perineurium, and epineurium. These layers of connective tissue provide structural support and protection to the axons, allowing them to transmit signals efficiently.

    Rate this question:

  • 12. 

    Which one are called local anesthesia nerve block?

    • PSA , MSA, ASA

    • Periodontal ligament injection

    • Intraseptal injections

    • Supraperiosteal injection

    Correct Answer
    A. PSA , MSA, ASA
    Explanation
    PSA, MSA, and ASA are called local anesthesia nerve blocks because they involve injecting the anesthetic near specific nerves to numb a larger area of the mouth. These nerve blocks are commonly used in dentistry to provide anesthesia during procedures such as tooth extractions or root canals. The Periodontal ligament injection and Intraseptal injections are different techniques that target specific areas or structures within the mouth, while the Supraperiosteal injection involves injecting the anesthetic just above the periosteum, the outer layer of bone.

    Rate this question:

  • 13. 

    Which one is the best answer for nerve block of local anesthesia in the maxillary nerve block?

    • PSA, MSA,ASA, Infraorbital , Greater palatine , and Naso palatine nerve

    • Supraperiosteal injection, infraseptal injection and periodontal ligament injection

    • PSA,MSA,ASA, Mental Nerve, Inferior Alveolar Nerve Block and lingual nerve block

    • PSA,MSA,ASA, Greater Palatine and Lingual Nerve block

    Correct Answer
    A. PSA, MSA,ASA, Infraorbital , Greater palatine , and Naso palatine nerve
    Explanation
    The correct answer includes the nerves that are involved in the maxillary nerve block. The maxillary nerve block is used to provide anesthesia to the upper teeth, gums, and surrounding structures. The nerves mentioned in the answer options, such as the PSA (Posterior Superior Alveolar), MSA (Middle Superior Alveolar), ASA (Anterior Superior Alveolar), Infraorbital, Greater palatine, and Naso palatine nerves, are all relevant to the maxillary nerve block. By blocking these nerves, effective anesthesia can be achieved in the maxillary region.

    Rate this question:

  • 14. 

    Gow- Gate nerve block The trigeminal nerve is predominantly sensory, and motor nerve, who supplied for the three large trunks, originate from the ganglion. Which of the following nerves is supply related only sensory?

    • The maxillary nerves

    • The mandibular nerve

    • The lingual nerve

    • The infra-orbital nerve

    Correct Answer
    A. The maxillary nerves
    Explanation
    The correct answer is the maxillary nerves. The question is asking which of the following nerves is solely responsible for sensory supply. The maxillary nerves are branches of the trigeminal nerve that primarily carry sensory information from the upper jaw, teeth, and gums. They do not have any motor function, making them the only option that fits the criteria of being supply related only to sensory functions.

    Rate this question:

  • 15. 

    One of the many proprietary names for lidocaine is what?

    • Xylocaine HCL

    • 35%Polocaine

    • Sandonest HCL

    • Mepivacaine

    • Candicaine HCL

    Correct Answer
    A. Xylocaine HCL
    Explanation
    Xylocaine HCL is one of the many proprietary names for lidocaine. Lidocaine is a local anesthetic that is commonly used for numbing the skin or mucous membranes. Xylocaine HCL is a specific formulation of lidocaine that contains hydrochloride as a salt. It is used for various medical and dental procedures to provide temporary relief from pain and discomfort.

    Rate this question:

  • 16. 

    In the dental office, the MOST important consideration when selecting a syringe type is the ability of the following:?

    • Aspirate

    • Delivery anesthetic solution to a patient

    • Accept a 30 gauge needle

    • Be cost effective

    Correct Answer
    A. Aspirate
    Explanation
    The most important consideration when selecting a syringe type in the dental office is the ability to aspirate. This means that the syringe should be able to draw back and check for blood before injecting anesthetic solution into the patient. This is crucial for patient safety as it helps to prevent injecting into blood vessels, which can cause complications. The ability to deliver anesthetic solution and accept a 30 gauge needle are also important factors, but they are not as critical as the ability to aspirate. Cost effectiveness is not mentioned as a consideration in the question.

    Rate this question:

  • 17. 

    At what time are professionals MOST at risk for a needle stick?

    • Recapping

    • Disassembly of syringe

    • Assembling the syringe

    • Giving the injection

    • Unsheathing the needle

    Correct Answer
    A. Recapping
    Explanation
    Professionals are most at risk for a needle stick when they are recapping the needle. Recapping involves putting the cap back on the needle after it has been used, which increases the chances of accidentally pricking oneself. This can happen because the cap may not fit properly or the hand holding the cap may slip. Therefore, recapping poses a higher risk compared to other activities such as disassembling or assembling the syringe, giving the injection, or unsheathing the needle.

    Rate this question:

  • 18. 

    When injecting Local anesthetic solution in maxilla on buccal side. Which of the following technique is used?

    • Supra periosteal

    • Sub periosteal

    • Sub mucosal

    • Intra osseous

    • Intra septal

    Correct Answer
    A. Supra periosteal
    Explanation
    The correct technique used when injecting a local anesthetic solution in the maxilla on the buccal side is the supra periosteal technique. This technique involves injecting the anesthetic solution just above the periosteum, which is the connective tissue covering the bone. By injecting the solution in this manner, the anesthetic can effectively numb the targeted area and provide pain relief during dental procedures.

    Rate this question:

  • 19. 

    Disto buccal root of upper 1st molar is supplied by:?

    • Posterior superior alveolar nerve

    • Middle superior alveolar nerve

    • Infra orbital nerve

    • Mental nerve

    • Buccal nerve

    Correct Answer
    A. Posterior superior alveolar nerve
    Explanation
    The disto buccal root of the upper 1st molar is supplied by the posterior superior alveolar nerve. This nerve is a branch of the maxillary division of the trigeminal nerve (V2). It provides sensory innervation to the maxillary molars, including the disto buccal root of the upper 1st molar. The other options, such as the middle superior alveolar nerve, infraorbital nerve, mental nerve, and buccal nerve, do not specifically supply the disto buccal root of the upper 1st molar.

    Rate this question:

  • 20. 

    Most local anesthetic agents is consist of :?

    • All of the above

    • Lipophilic group (frequently an aromatic ring)

    • Intermediate chain (commonly including an ester or amide)

    • Amino group

    Correct Answer
    A. All of the above
    Explanation
    The correct answer is "All of the above." Most local anesthetic agents consist of a lipophilic group, an intermediate chain (which can include an ester or amide), and an amino group. These components work together to provide the desired numbing effect by blocking nerve signals in a specific area of the body. The lipophilic group helps the anesthetic agent penetrate cell membranes, while the intermediate chain determines the duration of action and metabolism of the drug. The amino group is responsible for the ionization of the drug, allowing it to bind to specific receptors and block nerve conduction. Therefore, all three components are essential for the effectiveness of local anesthetic agents.

    Rate this question:

  • 21. 

    Local anesthetics are?

    • Weak bases

    • Weak acids

    • Salts

    • PH

    Correct Answer
    A. Weak bases
    Explanation
    Local anesthetics are weak bases. Weak bases are substances that have the ability to accept protons or donate pairs of electrons. Local anesthetics work by blocking nerve signals in a specific area, and they achieve this by inhibiting the function of sodium channels in nerve fibers. Weak bases are effective for this purpose as they can easily penetrate the lipid membranes of nerve cells in their uncharged form and then become charged (protonated) inside the cell, thereby blocking the sodium channels and preventing nerve signals from being transmitted.

    Rate this question:

  • 22. 

    Which of the following fibers is the first to be blocked?

    • B and C fibers

    • Type A alpha fibers

    • Type A beta fibers

    • Type A gamma fibers

    Correct Answer
    A. B and C fibers
    Explanation
    B and C fibers are the first to be blocked because they are smaller in diameter and have slower conduction velocities compared to Type A fibers. These fibers are responsible for transmitting dull, aching pain signals. Blocking them can help reduce pain sensations. Type A fibers, including alpha, beta, and gamma fibers, are larger in diameter and have faster conduction velocities, transmitting sharp, fast pain signals. Blocking B and C fibers first allows for targeted pain relief.

    Rate this question:

  • 23. 

    Indicate the function, which the last to be blocked:?

    • Motor function

    • Paine, temperature

    • Muscle spindles

    • Touch, pressure

    Correct Answer
    A. Motor function
    Explanation
    Motor function is the last to be blocked because when a person loses consciousness or becomes paralyzed, they are still able to feel pain, temperature, touch, pressure, and muscle spindles. This indicates that motor function is controlled by a different mechanism or pathway in the brain compared to the other functions listed.

    Rate this question:

  • 24. 

    Which of the following fibers participates in high-frequency pain transmission?

    • Type A delta and C fibers

    • Type A alpha fibers

    • Type B fibers

    • Type A beta fibers

    Correct Answer
    A. Type A delta and C fibers
    Explanation
    Type A delta and C fibers participate in high-frequency pain transmission. These fibers are part of the peripheral nervous system and are responsible for transmitting nociceptive signals from the site of injury or inflammation to the central nervous system. Type A delta fibers are myelinated and transmit sharp, well-localized pain signals, while C fibers are unmyelinated and transmit dull, poorly localized pain signals. Together, these fibers play a crucial role in the perception and transmission of pain signals in the body.

    Rate this question:

  • 25. 

    Most serious toxic reaction to local anesthetics is:?

    • All of the above

    • Seizures

    • Cardiovascular collapse

    • Respiratory failure

    Correct Answer
    A. All of the above
    Explanation
    The correct answer is "All of the above." Local anesthetics can cause severe toxicity, leading to seizures, cardiovascular collapse, and respiratory failure. These reactions can occur due to systemic absorption of the anesthetic, overdose, or individual sensitivity. Seizures can result from the CNS depressant effect of the anesthetic, while cardiovascular collapse can be caused by the drug's cardiotoxicity. Respiratory failure may occur due to the paralysis of respiratory muscles. Therefore, all of these reactions are potential serious toxic effects of local anesthetics.

    Rate this question:

  • 26. 

    Related to the maximum dose recommended when used Lidocaine 2% with Epinephrine 1:50,000. Which one of the following is selected for ASA?

    • ASA 1

    • ASA 2

    • ASA 3

    • ASA 4

    Correct Answer
    A. ASA 1
  • 27. 

    If the two percent of Lidocaine 2% with Epinephrine 1:100,000 are suggested for American Society of Anesthesia. Which one of the following categories of the American Society of Anesthesia was selected?

    • ASA 1

    • ASA 2

    • ASA 3

    • ASA 4

    Correct Answer
    A. ASA 1
    Explanation
    The selection of Lidocaine 2% with Epinephrine 1:100,000 suggests that ASA 1 was selected. ASA 1 represents a healthy patient with no systemic disease and no functional limitations, indicating that the patient is in good health and does not have any significant medical conditions.

    Rate this question:

  • 28. 

    If the Lidocaine 2% with Epinephrine 1:100,00 was used. Which one of the following is selected for the maximum dose recommendation?

    • 7.0 mg/kg

    • 6.6 mg/kg

    • 8.0 mg/kg

    • 2.0 mg/kg

    Correct Answer
    A. 7.0 mg/kg
    Explanation
    The maximum dose recommendation for Lidocaine 2% with Epinephrine 1:100,000 is 7.0 mg/kg. This means that for every kilogram of body weight, a maximum of 7.0 mg of Lidocaine with Epinephrine should be administered. This dosage ensures that the patient receives an appropriate amount of the medication while minimizing the risk of adverse effects.

    Rate this question:

  • 29. 

    As with all local anesthetics, the dose varies depending on the area to be anesthetized, the vascularity of tissues, individual tolerance, and the techniques of anesthesia. Which type of the following patient should be decreased the dose for them?

    • Debilitate or elderly patient

    • Adult patient

    • Young patient

    • Children patient

    Correct Answer
    A. Debilitate or elderly patient
    Explanation
    The correct answer is debilitated or elderly patient. Debilitated or elderly patients may have reduced liver and kidney function, which can affect the metabolism and elimination of the local anesthetic drug. This can lead to an increased risk of toxicity and adverse effects. Therefore, the dose should be decreased in these patients to minimize the risk and ensure safe anesthesia.

    Rate this question:

  • 30. 

    Which one of the following of the maximum dose recommended for normal healthy individual patient per kilogram is.?

    • 7.0 mg/kg

    • 6.6 mg/kg

    • 8.0 mg/kg

    • 6 mg/kg

    Correct Answer
    A. 7.0 mg/kg
    Explanation
    The correct answer is 7.0 mg/kg. This means that for a normal healthy individual patient, the maximum recommended dose per kilogram of body weight is 7.0 milligrams. This dosage is determined based on factors such as the patient's overall health and any potential risks or side effects associated with the medication. It is important to follow the recommended dosage to ensure safety and effectiveness of the treatment.

    Rate this question:

  • 31. 

    In 1980, when the first edition of Stanley F. Malamed, and the Sixth edition of Hand book of local anesthetic were available in dental cartridge form include: Lidocaine, Articaine, Prilocaine, Mepivacaine, and Bupivacaine. Which one of the following was selected for the maximum dose recommendation related to the Articaine 4% with epinephrine 1:100,000 per kilogram of the patient weight?

    • 7,0 mg /kg

    • 6.6 mg/kg

    • 8.0 mg/kg

    • 2.0 mg/kg

    Correct Answer
    A. 7,0 mg /kg
    Explanation
    Articaine 4% with epinephrine 1:100,000 was selected for the maximum dose recommendation of 7.0 mg/kg based on the information provided.

    Rate this question:

  • 32. 

    You suspect that your patient has an enlarged submandibular salivary gland. You expect the enlarged gland?

    • To be palpable both intra- and extraorally

    • To be palpable intraorally

    • To be palpable extraorally.

    • Only to be detectable by radiographical examination.

    Correct Answer
    A. To be palpable both intra- and extraorally
    Explanation
    When a submandibular salivary gland is enlarged, it can be palpable both intraorally (inside the mouth) and extraorally (outside the mouth). This means that the enlarged gland can be felt by touching it both from the inside and outside of the mouth. This is a characteristic feature of an enlarged submandibular salivary gland and helps in diagnosing the condition.

    Rate this question:

  • 33. 

    In a patient with a normal healthy mouth, you would expect the mucosa covering the alveolar process supporting the mandibular teeth to be?

    • Ed below the mucogingival junction and light pink above it

    • Light pink in colour on both sides of the mucogingigival junction.

    • Light pink below the mucogingival junction and red above it.

    • Red on both sides of the mucogingival junction

    Correct Answer
    A. Ed below the mucogingival junction and light pink above it
    Explanation
    In a patient with a normal healthy mouth, the mucosa covering the alveolar process supporting the mandibular teeth would be expected to be light pink below the mucogingival junction and light pink above it. This indicates a healthy gingival tissue with proper blood supply. The presence of light pink color on both sides of the mucogingival junction suggests normal tissue appearance and good oral health.

    Rate this question:

  • 34. 

    Mechanism(s) of local anesthetic action in epidural anesthesia:?

    • Direct local anesthetic action on nerve roots and spinal cord following local anesthetic diffusion across the dura and diffusion of local anesthetic into paravertebral regions through the intervertebral foramina

    • Direct local anesthetic action on nerve roots and spinal cord following local anesthetic diffusion across the dura

    • Diffusion of local anesthetic into paravertebral regions through the intervertebral foramina

    • Neither

    Correct Answer
    A. Direct local anesthetic action on nerve roots and spinal cord following local anesthetic diffusion across the dura and diffusion of local anesthetic into paravertebral regions through the intervertebral foramina
    Explanation
    The correct answer is direct local anesthetic action on nerve roots and spinal cord following local anesthetic diffusion across the dura and diffusion of local anesthetic into paravertebral regions through the intervertebral foramina. This explanation suggests that the local anesthetic directly acts on the nerve roots and spinal cord after it diffuses across the dura. Additionally, the local anesthetic also diffuses into the paravertebral regions through the intervertebral foramina, further contributing to its action.

    Rate this question:

  • 35. 

    Agents added to local anesthetics that prolonged local anesthetic duration of action?

    • Epinephrine, phenylephrine (Neo-Synephrine) and dextran

    • Epinephrine

    • Phenylephrine (Neo-Synephrine)

    • Dextran

    Correct Answer
    A. Epinephrine, phenylephrine (Neo-Synephrine) and dextran
    Explanation
    Epinephrine, phenylephrine (Neo-Synephrine), and dextran are all agents that can be added to local anesthetics to prolong their duration of action. Epinephrine is a vasoconstrictor that helps to decrease blood flow at the site of injection, thereby reducing the rate of absorption and prolonging the effects of the local anesthetic. Phenylephrine (Neo-Synephrine) also acts as a vasoconstrictor and can have similar effects. Dextran is a plasma expander that increases the volume of the local anesthetic solution, allowing for a slower release of the anesthetic and a longer duration of action.

    Rate this question:

  • 36. 

    Most commonly used local anesthetic for rhinolaryngologic cases

    • Cocaine

    • Ropivacaine (Naropin)

    • Bupivacaine (Marcaine)

    • Mepivacaine (Carbocaine)

    • Tetracaine (pontocaine)

    Correct Answer
    A. Cocaine
    Explanation
    Cocaine is the most commonly used local anesthetic for rhinolaryngologic cases. This is because cocaine has vasoconstrictive properties, which helps reduce bleeding during surgery in this area. It also provides effective anesthesia and has a rapid onset of action. Ropivacaine, bupivacaine, mepivacaine, and tetracaine are also local anesthetics, but they are not specifically indicated or commonly used for rhinolaryngologic cases.

    Rate this question:

  • 37. 

    The first ever peripheral nerve block is performed by

    • William Halsted

    • William Salk

    • Nils Lofgren

    • Alfred Einhorn

    Correct Answer
    A. William Halsted
    Explanation
    William Halsted is credited with performing the first ever peripheral nerve block. He was an American surgeon who is known for his contributions to the field of anesthesia and surgical techniques. Halsted introduced the use of local anesthesia through nerve blocks, which involve injecting anesthetic medication around a specific nerve to numb a specific area of the body. This technique revolutionized surgical practice and paved the way for modern regional anesthesia.

    Rate this question:

  • 38. 

    Unmeyelinated fiber is surround by

    • A single wrapping

    • Plural wrapping

    • Wrapping by nerve

    • Wrapping by artery

    Correct Answer
    A. A single wrapping
    Explanation
    Unmyelinated fiber is surrounded by a single wrapping, which refers to the presence of a single layer of support or insulation around the fiber. This wrapping helps to protect the fiber and provide structural integrity. It may also play a role in facilitating the transmission of electrical signals along the fiber.

    Rate this question:

  • 39. 

    The technique insertion of mucobuccal fold between apex of 2nd and 3rd molars at 45 degree is called

    • PSA, nerve block

    • MSA, nerve block

    • ASA, nerve block

    • Infraorbital nerve block

    Correct Answer
    A. PSA, nerve block
    Explanation
    The technique described in the question involves inserting the mucobuccal fold between the apex of the 2nd and 3rd molars at a 45-degree angle. This technique is known as the PSA (Posterior Superior Alveolar) nerve block. The PSA nerve block is commonly used in dentistry to anesthetize the maxillary molars and surrounding tissues. It involves injecting local anesthetic near the PSA nerve, which supplies sensation to the maxillary molars.

    Rate this question:

  • 40. 

    The area used to anesthetized the maxillary premolars, corresponding alveolus, and buccal gingival tissue is called

    • MSA nerve block

    • PSA nerve block

    • ASA nerve block

    • Naso palatine nerve block

    Correct Answer
    A. MSA nerve block
    Explanation
    The correct answer is MSA nerve block. The MSA (Middle Superior Alveolar) nerve block is used to anesthetize the maxillary premolars, corresponding alveolus, and buccal gingival tissue. It is a common technique used in dentistry to provide anesthesia for dental procedures in the upper premolar region.

    Rate this question:

  • 41. 

    Inferior alveolar nerve block (IAN) mouth must be open for this technique, best to utilize mouth drop, the depth of injection is about

    • 25 mm to 27mm

    • 27mm to 29mm

    • 29mm to 30 mm

    • 30 mm to 33 mm

    Correct Answer
    A. 25 mm to 27mm
    Explanation
    The correct answer is 25 mm to 27 mm. This is because the depth of injection for an inferior alveolar nerve block (IAN) is typically around 25 mm to 27 mm. This technique is performed with the mouth open, and it is recommended to use a mouth prop to keep the mouth in the desired position during the procedure.

    Rate this question:

  • 42. 

    Which of the following nerves are entering the sphenopalatine ganglion?

    • The greater, the nasopalatine nerve and posterior nasal nerve twigs.

    • The greater palatine nerve, and the posterior superior alveolar nerve

    • The greater palatine nerve, and the middle superior alveolar nerve

    • The greater palatine nerve, and the anterior superior alveolar nerve

    Correct Answer
    A. The greater, the nasopalatine nerve and posterior nasal nerve twigs.
    Explanation
    The sphenopalatine ganglion receives the greater, the nasopalatine nerve, and posterior nasal nerve twigs. This means that these nerves enter the ganglion.

    Rate this question:

  • 43. 

    The infraorbital nerve are supply for the front teeth both side left and right of the maxillary , especially for anterior superior alveolar nerve twigs and leave the trunk just before it exit of the infraorbital foramen and outside the foramen twigs to the skin between the nostril and eye.Which area is used for injection local anesthesia for these teeth?

    • At the apex between the canine and first premolar

    • At the apex between the second premolar and first molar

    • At the apex between the second and third molar

    • At the apex between the first and second molar

    Correct Answer
    A. At the apex between the canine and first premolar
    Explanation
    The correct answer is "at the apex between the canine and first premolar." The explanation for this is that the anterior superior alveolar nerve twigs, which are supplied by the infraorbital nerve, provide innervation to the front teeth on both sides of the maxillary. In order to administer local anesthesia to these teeth, the injection should be made at the apex (or tip) of the root between the canine and first premolar. This ensures that the anesthetic reaches the specific nerve branches responsible for supplying sensation to these teeth.

    Rate this question:

  • 44. 

    Biotransformation of amides take place where?

    • Liver

    • Kidney

    • Blood plasma

    • Spleen

    • Bloodstream

    Correct Answer
    A. Liver
    Explanation
    The liver is the correct answer because it is the primary organ responsible for the biotransformation of amides. Biotransformation refers to the process of converting a compound into a different form, usually to make it more easily eliminated from the body. The liver contains enzymes that can break down amides into their metabolites, which can then be excreted through urine or bile. The kidney, blood plasma, spleen, and bloodstream may also play a role in the elimination of amides, but the liver is the main site of their biotransformation.

    Rate this question:

  • 45. 

    The major factor influencing the ability to aspirate is what?

    • Gauge of the needle

    • Size of clinician hand’S

    • Site of injection

    • Size of thumb ring

    • Harpoon being sterile

    Correct Answer
    A. Gauge of the needle
    Explanation
    The gauge of the needle refers to the diameter of the needle. A smaller gauge needle has a larger diameter and allows for easier aspiration of fluids. Therefore, the gauge of the needle is a major factor influencing the ability to aspirate.

    Rate this question:

  • 46. 

    Needle used for infiltration is ?

    • 30 gauge

    • 25 gauge

    • 27 gauge

    • 16 gauge

    • 18 gauge

    Correct Answer
    A. 30 gauge
    Explanation
    The correct answer is 30 gauge. The gauge of a needle refers to its diameter, with a lower gauge number indicating a larger diameter. Infiltration is a medical procedure where a fluid or medication is injected into the body. A smaller gauge needle, like a 30 gauge, is typically used for infiltration as it causes less pain and trauma to the patient's skin and tissues.

    Rate this question:

  • 47. 

    Which of the following local anesthetics is more water-soluble?

    • Procaine

    • Tetracaine

    • Etidocaine

    • Bupivacaine

    Correct Answer
    A. Procaine
    Explanation
    Procaine is more water-soluble compared to the other local anesthetics listed. Water solubility is an important characteristic of local anesthetics as it affects their absorption and distribution in the body. Procaine has a higher water solubility due to its chemical structure, which contains an ester linkage. This ester group increases the hydrophilicity of procaine, allowing it to dissolve more readily in water. In contrast, tetracaine, etidocaine, and bupivacaine have an amide linkage in their structure, which reduces their water solubility.

    Rate this question:

  • 48. 

    If the two percent of Lidocaine 2% with Epinephrine 1:100,000 were used for patient 60kg. Which one of the following was selected for the 60kg patient?

    • 420 mg/kg

    • 350 mg/kg

    • 490 mg/kg

    • 500 mg/kg

    Correct Answer
    A. 420 mg/kg
    Explanation
    The correct answer is 420 mg/kg. Lidocaine 2% with Epinephrine 1:100,000 means that there is 2% Lidocaine and 1 part of Epinephrine in every 100,000 parts of the solution. For a 60kg patient, the total amount of Lidocaine needed would be 60kg multiplied by 420 mg/kg, which equals 25,200 mg or 25.2 g.

    Rate this question:

  • 49. 

    Disto buccal root of upper first molar is supplied by:?

    • Posterior superior alveolar nerve

    • Middle superior alveolar nerve

    • Infra orbital nerve

    • Mental nerve

    • Buccal nerve

    Correct Answer
    A. Posterior superior alveolar nerve
    Explanation
    The disto buccal root of the upper first molar is supplied by the posterior superior alveolar nerve. This nerve is a branch of the maxillary nerve and provides sensory innervation to the maxillary molars. The other options listed are not responsible for supplying innervation to this specific area of the tooth.

    Rate this question:

Quiz Review Timeline (Updated): Jul 12, 2023 +

Our quizzes are rigorously reviewed, monitored and continuously updated by our expert board to maintain accuracy, relevance, and timeliness.

  • Current Version
  • Jul 12, 2023
    Quiz Edited by
    ProProfs Editorial Team
  • Mar 05, 2019
    Quiz Created by
    Uhsdental

Recent Quizzes

Dental anesthesia MCQs 200 4DD. Dr.Tong leang Dental anesthesia MCQs 200 4DD. Dr.Tong leang
Dental Radiography. Dental Radiography.
Dental Fillings: Ultimate Quiz on Amalgam and Composite Restorations! Dental Fillings: Ultimate Quiz on Amalgam and Composite Restorations!
Back to Top Back to top
Advertisement
×

Wait!
Here's an interesting quiz for you.

We have other quizzes matching your interest.