MDA 37 – Flashcard
18 test answers
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__ is added to local anesthetic agent to slow down the intake of the agent and increase the duration of action.
answer
A vasoconstrictor
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Which of the following choices represents the lowest ratio, meaning greatest concentration, of vasoconstrictor in local anesthetic?
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1:20,000
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The use of an anesthetic solution without vasoconstrictor is recommended for patients with a history of:
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Recent myocardial infarction
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The time for when the local anesthetic takes complete effect until the complete reversal of anesthesia is called the __ of the anesthetic agent.
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Duration
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A short acting local anesthetic agent can last __ minutes.
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60 to 180
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Injecting the anesthetic solution directly into the tissue at the site of the the dental procedure, generally used on the maxillary teeth, is called an:
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Infiltration anesthesia
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__ anesthesia is frequently used on the mandibular teeth and is injected near a major nerve that numbs the entire area served by the nerve branch.
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Block
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The part of the anesthetics syringe that locks into the rubber stopper of the anesthetic cartridge so that the stopper can be retracted by pulling back on the piston rod is the:
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Harpoon
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The color coding system for anesthetic cartridges allows the practitioner to select the correct anesthetic solution by distinguishing the correct __ of the solution.
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Brand
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The lengths of needs used in dentistry are:
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1 inch and 1 5/8 inch
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The gauge of the needle refers to the thickness of the needle; the larger the gauge, the __ the needle.
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Thinner
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During the loading of an anesthetic syringe, the __ is loaded first.
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Anesthetic cartridge
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To be certain that the anesthetic solution is not injected into a blood vessel, the dentist:
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Used an aspirating syringe and always aspirated before depositing any solution
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Local anesthetic agents are not effective when injected into an area where a tooth or soft tissue is infected because:
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An increase of lymphocytes, in the area to combat the infection, will interfere with the effectiveness of the anesthetic solution.
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