Local Anesthesia Post Test correctly answered

Local Anesthesia Post Test1. Which cranial nerve is involved with the sensory innervation of the teeth, bone and soft tissues of the oral cavity: a. Oculomotor b. Trochlear c. Trigeminal d. Facial e. Hypoglossal - correct answer c. Trigeminal 2. After administering a right inferior alveolar nerve (IAN) block to your patient, the first molar is still sensitive, even though the other teeth in quadrant are numb. What could be the cause of this: a. the area of insertion of the needle was too inferior b. innervation of this tooth is being supplied by mylohyoid nerve c. the local anesthetic agent that was used lacked a vasoconstrictor d. there is cross-over innervation from the inferior alveolar nerve on the opposite side e. the area of insertion of the needle was too superior b. innervation of this tooth is being supplied by mylohyoid nerve - correct answer b. innervation of this tooth is being supplied by mylohyoid nerve 3. Name the nerve which provides sensory innervation to the buccal gingiva of the mandibular molars and the mucobuccal fold in that region: a. long buccal b. incisive c. inferior alveolar - correct answer a. long buccal 4. If a hematoma appears after the posterior superior alveolar injection (PSA), it is most likely due to: a. needle inserted too far posteriorly into the pterygoid plexus of veins b. a 25 gauge needle was used in place of a 27 gauge needle c. the lack of a vasoconstrictor in the anesthetic agent d. anesthetic agent injected too quickly - correct answer a. needle inserted too far posteriorly into the pterygoid plexus of veins 5. In areas of inflammation and infection, what can be done to maximize the effectiveness of the local anesthetic agent: a. move away from the area of inflammation and inject further up the nerve branch b. deposit a larger amount of anesthetic agent than normal c. deposit a smaller amount of anesthetic agent than normal d. avoid using topical anesthetic