Dentistry: Local Anesthetics and Their Applications
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Questions and Answers

What is the primary purpose of ring block anesthesia?

  • To anesthetize a circular area around the operation site (correct)
  • To reduce pain during injection
  • To provide spinal anesthesia
  • To numb a specific nerve
  • Which type of anesthesia is not typically used with cocaine?

  • Nerve block
  • Spinal anesthesia
  • Epidural anesthesia
  • All of the above (correct)
  • What is the primary reason for adding a topical anesthetic agent before injection?

  • To reduce the risk of paresthesia
  • To reduce the pain of injection (correct)
  • To reduce the risk of needle fracture
  • To prolong the anesthetic effect
  • What is the first step in managing a broken needle during injection?

    <p>Remove the broken part immediately with a hemostat if accessible</p> Signup and view all the answers

    What is a common complication of dental local anesthetic blocks?

    <p>All of the above</p> Signup and view all the answers

    What is the first step in treating a nerve damaged due to dental local anesthesia?

    <p>Managing the patient's pain</p> Signup and view all the answers

    What may be mistaken for myocardial infarctions or cerebrovascular accidents?

    <p>Deaths caused by local anesthetics</p> Signup and view all the answers

    What are common manifestations of acute anxiety in patients given local anesthetics?

    <p>Pallor, unrest, sweating, fatigue, palpitation, nausea, and fainting</p> Signup and view all the answers

    What is the likely cause of most non-psychogenic systemic reactions in adult patients?

    <p>Accidental intravascular injections</p> Signup and view all the answers

    What is often mistakenly attributed to local anesthetics?

    <p>Adverse effects caused by the process of injection</p> Signup and view all the answers

    Why may some deaths be attributed to local anesthetics?

    <p>Because procedural stress is causally related to drug administration</p> Signup and view all the answers

    What is the primary mechanism of action of local anesthetics in blocking pain sensation?

    <p>Blocking the influence of stimulation on Na+ conductance</p> Signup and view all the answers

    Which of the following is an example of an ester-based local anesthetic?

    <p>Procaine</p> Signup and view all the answers

    What is the primary purpose of surface anesthesia?

    <p>To reduce pain due to fissure or ulcer</p> Signup and view all the answers

    Which of the following techniques of local anesthesia involves injecting local anesthetics into the skin or deep tissue?

    <p>Infiltration anesthesia</p> Signup and view all the answers

    What is the effect of local anesthetics on nerve conduction?

    <p>Slowing of conduction</p> Signup and view all the answers

    Which of the following is NOT a technique of local anesthesia?

    <p>General anesthesia</p> Signup and view all the answers

    What is recommended to decrease local anesthesia-dependent nerve injury?

    <p>Using 2% lidocaine as standard and preventing repeated injections</p> Signup and view all the answers

    Why may local anesthesia lack effect in some cases?

    <p>Due to poor technique in reaching the mandibular nerve during injection</p> Signup and view all the answers

    What is the primary contribution of local anesthetics to oral health?

    <p>Improving patient acceptance of dental treatment</p> Signup and view all the answers

    Why is local anesthesia often safer in dentistry than in medicine?

    <p>Because dosages used in dentistry are often less than in medicine</p> Signup and view all the answers

    What is the estimated mortality rate associated with local anesthetic administrations?

    <p>1 death in 1.4 million administrations</p> Signup and view all the answers

    What is the purpose of using local anesthetics in dentistry?

    <p>To control pain during dental procedures</p> Signup and view all the answers

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