Local Anesthesia Mock Board Questions and Answers Latest Version Already Passed

Local Anesthesia Mock Board Questions and Answers Latest Version Already Passed What is the main reason to aspirate before depositing anesthetic? To avoid intravascular injection Which needle length is typically recommended for an inferior alveolar nerve block? Long needle What landmark helps identify the correct insertion point for the mental nerve block? Mental foramen What type of injection is used to anesthetize the maxillary central incisor? Supraperiosteal infiltration What is the primary reason to use a vasoconstrictor with local anesthetic? To reduce bleeding and prolong anesthetic effect 2 Which structure is responsible for most of the diffusion resistance in a nerve bundle? Perineurium Which part of the trigeminal nerve is involved in mandibular anesthesia? V3 (mandibular division) What is the first sign of local anesthetic toxicity? Numbness of the tongue and lips What is the most appropriate response if a patient reports difficulty swallowing after a bilateral mandibular block? Reassure and monitor airway; effect is usually temporary What is the safest way to minimize patient discomfort during injection? Inject slowly and steadily What injection anesthetizes both the anterior teeth and associated facial gingiva? Anterior superior alveolar block 3 How can you tell if you’ve contacted bone too early during an IAN block? Needle is too anterior What is the most likely cause of a large swelling immediately after injection? Hematoma from nicked blood vessel Why should you avoid injecting directly into inflamed tissue? Lower pH reduces anesthetic effectiveness What’s the best way to manage a mild allergic reaction to local anesthetic? Administer an antihistamine and monitor What is the purpose of the harpoon in the syringe? To allow aspiration What’s the maximum number of cartridges of 2% lidocaine with 1:100,000 epi for a healthy adult? 4 Approximately 11 cartridges Which injection numbs the palatal tissue behind the upper anterior teeth? Nasopalatine nerve block What is the most common cause of trismus after an injection? Needle trauma to the medial pterygoid muscle What should you do if a needle breaks during injection and is not visible? Refer to oral surgeon for retrieval What causes blanching of tissues during injection? Vasoconstriction of blood vessels What injection targets the pulp of multiple mandibular teeth on one side? Inferior alveolar nerve block What is the safest approach if a patient has cardiovascular disease and needs anesthesia? 5 Limit vasoconstrictor dose What is the suggested injection rate for most dental anesthetics? 1 cartridge over 1 minute What is the role of pKa in local anesthetic agents? It affects the onset time Why is articaine effective for mandibular infiltrations? It penetrates dense bone well What’s the most common reason for failure of an IAN block? Injection was too low or too anterior