WREB questions well answered graded A+ 2023/2024

WREBHow much anesthetic should be deposited when administering the PSA? - correct answer 0.9-1.8 ml Hematoma - correct answer the collection of blood under the skin as the result of blood escaping into the tissue from damaged blood vessels. bruise What is the most common medical emergency in dentistry? - correct answer Vasopressor syncope or fainting What does the mental nerve block anesthetize? - correct answer 1rst premolar, buccal mucous membrane to midline , skin of the lower lip What does the Buccal nerve block anesthetize? - correct answer soft tissue buccal to the molars What is the most common cause of toxicity to LA - correct answer rapid intrvascular injection How much of the nerve must be bathed in LA to achieve anesthesia? - correct answer 6-10mm Which cranial nerve is involved with the sensory innervation of the teeth, bone, and soft tissues of the oral cavity? - correct answer Trigeminal Name the nerve which provides sensory innervation to the buccal gingiva of the mandibular molars and the mucobuccal fold in that region? - correct answer Long buccal Depolarization - correct answer sodium rushes into neuron through membrane, potassium ruses out; results in a change in charge T or F- The phase of conduction affected by LA is the repolarization phase? - correct answer F- it the depolarization phase How are esters metabolized metabolized? - correct answer In the plasma by pseudocholinesterase Which classification of local anesthetic agents is the most vasodilating? - correct answer Esters What type of effect do local anesthetics have on the central nervous system - correct answer They depress the CNS Why are vasocontrictors added to local anesthetics? - correct answer To counteract the vasodilating effects of the local anesthetic The metabolic by-product responsible for allergic reactions to the ester classification of anesthetics is: - correct answer para-aminobenzoic acid What is the brand name for the vasoconstrictor epinepherine? - correct answer Adrenalin Amides are biotransformed primarily in the: - correct answer Liver Determine the concentration of the local anesthetic agent in a 2% solution of lidocaine - correct answer 20mg/ml Which gauge needle has the smallest diameter? - correct answer a 30 gauge Bubbles of approximately 1-2mm found in a cartridge are: - correct answer not a concern For adequate aspiration, the thumb ring should be pulled back: - correct answer 1-2mm The ideal rate at which to inject local anesthetic is: - correct answer 1ml in approximately 60 seconds