Dental Anesthesia Preparation (Dr. Tong Leang) /200 0 Dental Anesthesia Preparation (Dr. Tong Leang) 1 / 200 1) Indicate the local anesthetic, which is a long-acting agent:? a. Bupivacaine b. Procaine c. Lidocaine d. Mepivacaine 2 / 200 2) Which of the following local anesthetics is more water-soluble? a. Procaine b. Etidocaine c. Bupivacaine d. Tetracaine 3 / 200 3) Which of the following drugs can cause methemoglobinnemia when used in larger doses for regional anesthesia? a. Prilocaine b. Bupivacaine c. Procaine d. Cocaine e. Lidocaine 4 / 200 4) The major factor influencing the ability to aspirate is what? a. Harpoon being sterile b. Gauge of the needle c. Size of thumb ring d. Size of clinician hand’S e. Site of injection 5 / 200 5) Which of the following local anesthetics is used exclusively for its good surface activity and low toxic potential? a. Lidocaine b. Procaine c. Bupivacaine d. Cocaine e. Benzocaine 6 / 200 6) Commonly use local anesthetics for topical/surface application: a. lidocaine (Xylocaine) b. cocaine c. chloroprocaine (Nesacaine) d. lidocaine (Xylocaine), tetracaine (pontocaine) and cocaine e. tetracaine (pontocaine) 7 / 200 7) The more lipophilic drugs ? a. Are more potent b. Have longer duration of action c. All of the above d. Bind more extensively to protein 8 / 200 8) Disto buccal root of upper 1st molar is supplied by:? a. Posterior superior alveolar nerve b. infra orbital nerve c. buccal nerve d. Middle superior alveolar nerve e. mental nerve 9 / 200 9) Clinical presentations suggestive of local anesthetic allergies: a. Rash b. bronchospasm c. All are correct d. laryngeal edema e. urticarial and possibly hypotension 10 / 200 10) The first ever peripheral nerve block is performed by a. William Salk b. Nils Lofgren c. William Halsted d. Alfred Einhorn 11 / 200 11) When procaine undergoes metabolic breakdown, the major metabolic product (metabolite) is what? a. Pseudocholinesterase b. Succinylcholine c. Para-aminobenzoic acid d. chloroprocaine 12 / 200 12) Which one of the following groups is responsible for the potency and the toxicity of local anesthetic? a. Non Ionize group b. Intermediate chain c. Lipophylic group d. Inonizable group 13 / 200 13) The technique of insertion at mucobuccal fold in the area of lateral incisor and canine on maxillary is called a. MSA nerve block technique b. PSA nerve block technique c. Greater palatine nerve block technique d. ASA nerve block technique 14 / 200 14) Common eutectic mixture of local anesthetics (EMLA)? a. prilocaine (Citanest) and bupivacaine (Marcaine) b. tetracaine (pontocaine) and epinephrine c. lidocaine (Xylocaine) and prilocaine (Citanest) d. lidocaine (Xylocaine) and tetracaine (pontocaine) e. tetracaine (pontocaine) and bupivacaine (Marcaine) 15 / 200 15) Local anesthetic deposited near the main nerve trunk and is usually distant form the operative site is called a. Periapical injection b. Nerve block c. Infiltration d. Field block 16 / 200 16) After properly loading the cartridge into the syringe, a few drops of local anesthetic should be expelled. Why? a. To ensure the ability to aspirate b. To ensure the needle has not been barded c. The ensure the correct anesthetic has been used d. The ensure proper placement of the harpoon e. To ensure free flow of the solution 17 / 200 17) Which one are the following technique used only on the mandibular nerve Block , please choice the best answer a. IAN, Lingual nerve Block , Gow-Gate nerve Block b. IAN, Long buccal nerve Block, infraorbital nerve block c. IAN, Akinosi, PSA, MSA, ASA, Greater palatine nerve block d. IAN, Akinosi, Gow-Gates, Mental nerve Block 18 / 200 18) The technique of insertion at mucobuccal fold in the area of 1st and 2nd premolars is called a. MSA nerve block b. ASA nerve block c. Infraorbital nerve block d. PSA nerve block 19 / 200 19) Which techniques do not work in the adult mandible due to dense cortical bone the below technique is a. Infiltration injection technique b. Mental nerve block c. Nerve block d. Field block 20 / 200 20) If the two percent of Lidocaine 2% with Epinephrine 1:100,000 were used for patient 60kg. Which one of the following was selected for the 60kg patient? a. 350 mg/kg b. 420 mg/kg c. 500 mg/kg d. 490 mg/kg 21 / 200 21) When it is necessary to administer more than one anesthetic drug, a safe total should be determined by not exceeding what? a. 35% of the maximum dose of each drug being administered b. the lower of the two maximum doses for the individual agents c. 25% of the maximum dose of each drug being administered d. Dental work being done in many more than on quadrant e. the maximum dose of each drug being administered 22 / 200 22) The regional lymphatic drainage of the left side of the tip of the tongue is to the? a. left and right submental lymph nodes b. left submandibular lymph node. c. left submental lymph node. d. left and right submandibular lymph nodes. 23 / 200 23) Frequently used amide-type local anesthetic for Bier block a. bupivacaine (Marcaine) b. prilocaine (Citanest) c. chloroprocaine (Nesacaine) d. ropivacaine (Naropin) 24 / 200 24) Which of the following local anesthetics is used for infiltrative and regional anesthesia related to amide type? a. Cocaine b. Lidocaine c. Procaine d. Tetracaine 25 / 200 25) Agents not recommended for Bier block: a. mepivacaine (Carbocaine) b. chloroprocaine (Nesacaine), mepivacaine (Carbocaine), and bupivacaine (Marcaine) c. chloroprocaine (Nesacaine d. bupivacaine (Marcaine) 26 / 200 26) The antioxidant used to preserve epinephrine in a local anesthetic solution is? a. Sodium pentanol b. Sodium bisulfate c. Sodium bicarbonate d. Sodium hydrochloride e. Sodium chloride 27 / 200 27) You notice a lesion on the labial alveolar mucosa of the lower right lateral incisor tooth of one of your patients and decide to take a biopsy to send for oral pathology report Which nerve would require local anesthesia in order to carry out a pain-free biopsy? a. The lingual nerve b. The buccal nerve c. The incisive nerve 28 / 200 28) The area used to anesthetized the maxillary premolars, corresponding alveolus, and buccal gingival tissue is called a. MSA nerve block b. PSA nerve block c. Naso palatine nerve block d. ASA nerve block 29 / 200 29) If the two percent of Lidocaine 2% with Epinephrine 1:100,000 are suggested for American Society of Anesthesia. Which one of the following categories of the American Society of Anesthesia was selected? a. ASA 2 b. ASA 1 c. ASA 3 d. ASA 4 30 / 200 30) Lidocaine (Xylocaine) effect on ventilation response to hypoxia? a. no effect b. enhanced response and no effect c. enhanced response d. depressed response 31 / 200 31) This amide-type local anesthetic is used to assess the possible presence of atypical cholinesterase a. bupivacaine (Marcaine) b. chloroprocaine (Nesacaine) c. dibucaine (Nupercainal, generic) d. procaine (Novocain) e. ropivacaine (Naropin) 32 / 200 32) Allergic reactions to local anesthetics:? a. common > 10% of adverse reactions due to allergic mechanisms b. high-risk with ester-type agents which are metabolized to p-aminobenzoic acid-related compounds c. cross-sensitivity between esters and amide-type local anesthetics are common d. intradermal testing for possible allergy to local anesthetics should use preservative-free drug e. high-risk with ester-type agents which are metabolized to p-aminobenzoic acid-related compounds and intradermal testing for possible allergy to local anesthetics should use preservative-free drug 33 / 200 33) Ionizable group is responsible for ? a. All of the above b. The duration of action c. The potency and the toxicity d. The ability of diffuse to the site of action 34 / 200 34) Factors which increase local anesthetic CNS toxicities:? a. rate of injection, patient receiving mexiletine (Mexitil) when lidocaine (Xylocaine) is used and high PaCO2 (reduced local anesthetic seizure threshold) b. high PaCO2 (reduced local anesthetic seizure threshold) c. rate of injection d. patient receiving mexiletine (Mexitil) when lidocaine (Xylocaine) is used e. Hypokalemia 35 / 200 35) Indicate the local anesthetic, which is mainly used for regional nerve block anesthesia? a. Bupivacaine b. Cocaine c. Dibucaine d. Tetracaine 36 / 200 36) Which of the following nerves are entering the sphenopalatine ganglion? a. The greater, the nasopalatine nerve and posterior nasal nerve twigs. b. The greater palatine nerve, and the posterior superior alveolar nerve c. The greater palatine nerve, and the middle superior alveolar nerve d. The greater palatine nerve, and the anterior superior alveolar nerve 37 / 200 37) In local anesthetic dissociation, tissues with a low pH would have effect on base(RN) and cation(RNH+) in the solution? a. Rapid onset of local anesthetic b. Increase duration of local anesthetic c. A lower portion of RN and higher portion of RNH+ d. A lower portion of RNH+ and a higher portion of RN e. Decrease potency of local anesthetic 38 / 200 38) Gow- Gate nerve block The trigeminal nerve is predominantly sensory, and motor nerve, who supplied for the three large trunks, originate from the ganglion. Which of the following nerves is supply related only sensory? a. the mandibular nerve b. the maxillary nerves c. the lingual nerve d. the infra-orbital nerve 39 / 200 39) The anesthetic effect of the agent of short and intermediate duration of action cannot be prolong by adding:? a. Norepinephrine b. Epinephrine c. Dopamine d. Phenylephrine 40 / 200 40) The technique can be used to anesthetize the soft and hard tissue of the maxillary anterior palate from canine to canine is called a. Posterior superior alveolar nerve block b. Infraorbital nerve block c. Naso palatine nerve block d. Greater palatine nerve block 41 / 200 41) Indicate the local anesthetic, which is a toluidine derivative:? a. Bupivacaine b. Lindocaine c. Procaine d. Prilocaine 42 / 200 42) Which one of the following local anesthetic agents (at the correct dosage) is the most likely to provide the most prolonged analgesia? a. Articaine b. Lidocaine (lignocaine) c. Bupivacaine d. Prilocaine e. Mepivacaine 43 / 200 43) Most local anesthetic agents is consist of 😕 a. amino group b. Lipophilic group (frequently an aromatic ring) c. All of the above d. Intermediate chain (commonly including an ester or amide) 44 / 200 44) The area of injection mucobuccal fold between the mandible premolars is called a. Mental Nerve Block b. Long buccal Nerve block c. IAN Block 45 / 200 45) Factor(s) that reduce lidocaine (Xylocaine) seizure threshold.? a. Acidosis b. Hyperkalemia c. Hypoxemia, Hyperkalemia and Acidosis d. Hypoxemia 46 / 200 46) Which one of the following local anesthetics causes methemoglobinemia? a. Ropivacaine b. Lidocaine c. Procaine d. Prilocaine 47 / 200 47) A healthy patient weighing 155 lbs has been given 2 cartridges of 2% lidocaine with epinephrine 1:100,000. How many MORE cartridges of 3% arestocaine can they have? a. 4.2 b. 4.0 c. 4.6 d. 4.4 48 / 200 48) The nerve that combines MSA and ASA block is called a. Infraorbital nerve block b. Greater palatine nerve block c. Naso palatine nerve block d. Posterior superior alveolar nerve block 49 / 200 49) Biotransformation of amides take place where? a. bloodstream b. liver c. spleen d. blood plasma e. kidney 50 / 200 50) Indicate the function, which the last to be blocked:? a. Paine, temperature b. Touch, pressure c. Motor function d. Muscle spindles 51 / 200 51) Indicate the local anesthetic, which is an ester of paraaminobezoic acid:? a. Cocaine b. Lidocaine c. Procaine d. Mepivacaine 52 / 200 52) Which one of the following agents is classified as the intermediate one? a. Prilocaine HCL 4% b. Mepivacaine 3% c. Bupivacaine HCL 0.5% d. Articaine HCL 4% 53 / 200 53) Most common cause of toxic plasma local anesthetic concentrations? a. without solution of vasoconstrictors for anesthetic b. accidental direct intravascular injection during block c. increase vasoconstrictors solution in the anesthetic d. incorrect dosage during peripheral or block 54 / 200 54) Efferent or motor neurons conduct messages from: a. The periphery of the body to the CNS. b. The CNS to the periphery. c. The pain stimulus to the periphery. d. The cell body to the CNS. 55 / 200 55) Which one of the following of the maximum dose recommended for normal healthy individual patient per kilogram is.? a. 7.0 mg/kg b. 8.0 mg/kg c. 6 mg/kg d. 6.6 mg/kg 56 / 200 56) Zone of differential motor blockade may average up to four segments below the sensory level? a. Spinal b. epidural and Spinal c. epidural 57 / 200 57) The injection that able to perform in maxilla with thin cortical nature of bone, to tissue immediately surgical site is called. a. Infiltration b. Inferior alveolar nerve block c. Nerve block d. Field block 58 / 200 58) The technique Provides same area of anesthesia as the Inferior alveolar nerve block and useful for injected patients with trismus, fractured mandible are needs to be used a. IAN Block b. Lingual nerve Block c. Long Buccal nerve Block d. Akinosi nerve Block(R) 59 / 200 59) Local anesthetic which produces localized vasoconstriction and anesthesia? a. tetracaine (pontocaine) b. chloroprocaine (Nesacaine) c. prilocaine (Citanest) d. cocaine e. lidocaine (Xylocaine) 60 / 200 60) Local anesthetic lipophilicity and effectiveness of epinephrine on local anesthesia: a. more lipophilic anesthetics benef ileast by epinephrine in addition to local anesthetic solutions® b. more lipophilic anesthetics benefit most by epinephrine in addition to local anesthetic solutions 61 / 200 61) The area of insertion needle is at the incisive papilla into incisive foramen and inject 0.3cc to 0.5cc of local anesthetic is called a. Posterior superior alveolar nerve block b. Greater palatine nerve block c. Naso-palatine nerve block d. Infraorbital nerve block 62 / 200 62) The groups of the axon, the fasciculi, are enclosed in an additional connective tissue sheath called a. Epineurium b. Endoneurium c. The perineurium d. Fasciculi 63 / 200 63) Which one is NOT include in the type of infiltration technique? a. Infraorbital injection b. Periodontal ligament injections c. Supraperiosteal injections d. Intraseptal injections 64 / 200 64) Distilled water is added to the cartridge for what purpose? a. To provide the volume of the solution b. To make the solution isotonic with the tissues of the body c. To increase the safely and the duration of the anesthetic d. To prevent the probation of nerve impulses e. To prevent the biodegradation of the vasopressor 65 / 200 65) Needle used for infiltration is ? a. 16 gauge b. 30 gauge c. 25 gauge d. 18 gauge e. 27 gauge 66 / 200 66) what are the local anesthetic produce for:? a. blocking pain sensation without loss of consciousness b. a stupor or somnolent state c. alleviation of anxiety and pain with an altered level of consciousness d. analgesia, amnesia, loss of consciousness 67 / 200 67) The technique palpate from extra orally and place thum or index finger on region with retract the upper lip and buccal mucosa and the area of injection is at the mucobuccal fold of the 1st premolar and canine area is called a. Middle superior alveolar nerve block b. PSA nerve block c. Field block d. Infraorbital nerve block 68 / 200 68) Which of the following fibers participates in high-frequency pain transmission? a. Type B fibers b. Type A beta fibers c. Type A delta and C fibers d. Type A alpha fibers 69 / 200 69) A successful infraorbital nerve block will produce anaesthesia of the? a. maxillary anterior teeth. b. maxillary anterior teeth, their labial gingivae, the upper lip and anterior hard palate c. maxillary anterior teeth and their labial gingivae. d. maxillary anterior teeth, their labial gingivae and the upper lip 70 / 200 70) Stacey, a 18 year old soccer player, arrives for extraction of teeth #4,12, and 20, and she is given 5 cartridges of 4% Articaine with epi 1:100,000.Her mother calls 3 hours following the appointment stating that Stacey appears cyanotic and sluggish. Her nail beds look dark and the blood in the extraction sites is chocolate brown. What is MOST likely the condition presented? a. Local anesthetic allergy b. Local anesthetic overdose c. Methemoglobinemia d. Malignant hyperthermia e. A typical plasma cholinesterase 71 / 200 71) Which of the following local anesthetcs is a short-acting drug? a. Procaine b. Bupivacaine c. Ropivacaine d. Tetracaine 72 / 200 72) Correct statements concerning bupivacaine include all of the following EXCEPT? a. It is a long-acting drug b. It has low cardiotoxicity c. An intravenous injection can lead to seizures. d. It has amide linkage 73 / 200 73) Vasoconstrictor in Local anesthetic solution is? a. Increase toxic effects of LA b. Increase bleeding c. Reduce toxic effects of LA solution d. Has no effect on efficacy LA solution e. Decreases depth & duration of LA 74 / 200 74) Which layer is considered as anatomical barrier to the diffusion of local anesthetic substances a. Fasciculi b. Endoneurium c. Perineurium d. Epineurium 75 / 200 75) Factors that influence lidocaine (Xylocaine) metabolism:? a. volatile anesthetics b. reduced liver blood flow c. pregnancy-induced hypertension d. hepatic disease e. pregnancy-induced hypertension, hepatic disease, reduced liver blood flow and volatile anesthetics 76 / 200 76) When injecting Local solutionin maxilla on buccal side. The technique is ? a. Supra periosteal b. Intra osseous c. Sup periosteal d. Sup mucosal e. Intra septal 77 / 200 77) Rationale for adding epinephrine to a local anesthetic solution:? a. reduced local anesthetic systemic absorption and increased anesthetic concentration near nerve fibers b. increased anesthetic concentration near nerve fibers c. reduced local anesthetic systemic absorption d. all of the above e. reduced duration of conduction blockade 78 / 200 78) Neurotoxicity — moderate/severe lower back, buttocks, posterior side pain? a. cauda equina syndrome b. anterior spinal artery syndrome c. transient radicular irritation 79 / 200 79) Related to the maximum dose recommended when used Lidocaine 2% with Epinephrine 1:50,000. Which one of the following is selected for ASA? a. ASA 2 b. ASA 4 c. ASA 1 d. ASA 3 80 / 200 80) Mechanism(s) of local anesthetic action in epidural anesthesia:? a. neither b. direct local anesthetic action on nerve roots and spinal cord following local anesthetic diffusion across the dura c. direct local anesthetic action on nerve roots and spinal cord following local anesthetic diffusion across the dura and diffusion of local anesthetic into paravertebral regions through the intervertebral foramina d. diffusion of local anesthetic into paravertebral regions through the intervertebral foramina 81 / 200 81) Which of the following local anesthetics is an useful antiarrhythmic agent? a. Bupivacaine b. Cocaine c. Ropivacaine d. Lidocaine 82 / 200 82) Epinephrine added to a solution of lidocaine for local anesthesia will:? a. Decrease the heart rate when absorbed. b. Increase the risk of convulsion. c. Increase the absorption of lidocaine d. Cause cyanosis locally. e. Increase the duration of local anesthesia 83 / 200 83) In a patient with a normal healthy mouth, you would expect the mucosa covering the alveolar process supporting the mandibular teeth to be? a. light pink in colour on both sides of the mucogingigival junction. b. light pink below the mucogingival junction and red above it. c. red on both sides of the mucogingival junction d. ed below the mucogingival junction and light pink above it 84 / 200 84) Which one of the following statements about the metabolism of local anesthetics is incorrect? a. Metabolism of local anesthetics occurs at the site of administration b. Ester group of anesthetics like Procaine, are metabolized systemically by pseudocholinesterae c. Metabolism occurs in the plasma or liver but not at the site of administration d. Amides such as Lignocaine, are metabolized in the liver by microsomal mixed function oxidases 85 / 200 85) What is one important way that local anesthetic drugs differ from all other drugs used in dentistry? a. Rate of uptake into bloodstream b. Blood levels must be sufficient to exert effect c. Action ceased when absorbed into bloodstream d. Route of administration e. High potential of overdose 86 / 200 86) The maxillary nerve exclusively sensory, passes through the foramen rotundum to reach the pterygopalatine fossa, where it off a number of branches.How many branches will theses nerves passes through the sphenopalatine ganglion? a. five branches b. four branches c. three branches d. two branches e. There two branches of maxillary nerve, which enter the sphenopalatine ganglion. 87 / 200 87) The area of insertion needle is at the mucous membrane of the medial border of the mandibular ramus at the intersection of a horizontal line and vertical line is called a. Akinosi or close mouth nerve block b. Lingual nerve block only c. Long buccal nerve block d. IAN block, lingual nerve block 88 / 200 88) Least likely to exhibit cross-sensitivity with amide or ester local anesthetics.? a. dyclonine (Dyclone) b. tetracaine (pontocaine) c. bupivacaine (Marcaine) d. mepivacaine (Carbocaine) e. lidocaine (Xylocaine) 89 / 200 89) Which of the following local anesthetics is preferable in patient with pseudocholinesterase difiency? a. Benzocaine b. Tetracaine c. Procaine d. Ropivacaine 90 / 200 90) Which of the following drugs can cause methemoglonemia? a. Prilocaine b. Procaine c. Lidocaine d. Cocaine e. Bupivacaine 91 / 200 91) Local anesthetics are? a. pH b. Salts c. Weak bases d. Weak acids 92 / 200 92) Indicate the drug, which has greater potency of the local anesthetic action:? a. Mepivacaine b. Procaine c. Bupivacaine d. Lidocaine 93 / 200 93) Indicate the anesthetic agent of choice in patient with a liver disease:? a. Eticaine b. Lidocaine c. Bupivacaine d. Procaine 94 / 200 94) All of the following are ways of caring for a syringe EXCEPT one. Which one is the EXCEPTION? a. dismantle and lubricate every 5 uses b. Rinse syringe of saliva and foreign matter c. Sharpen or replace harpoon as needed d. clean with an ultrasonic instrument e. Place in an ultrasonic bath 95 / 200 95) The technique of about 1.0 cc of local Anesthetic and continues to inject about 0.5 cc on removal from injection site to anesthetize the lingual branch, inject remaining anesthetic in to corrode notch region of mandible in the mucous membrance distal and buccal to most distal molar to perform a long buccal nerve block is called a. IAN, Mental nerve Block and Lingual nerve Block b. IAN, Long buccal nerve Block c. IAN, Long buccal, Lingual nerve block d. IAN,Long Buccal nerve block only 96 / 200 96) Preferred local anesthetics for local infiltration:? a. ropivacaine (Naropin) b. bupivacaine (Marcaine) c. lidocaine (Xylocaine) d. lidocaine (Xylocaine), ropivacaine (Naropin) and bupivacaine (Marcaine) 97 / 200 97) Which one of the following maximum dosage recommendations is selected for the patient weigh 70kg, related to Lidocaine 2% with epinephrine 1:50,000? a. 420 mg/kg b. 490 mg/kg c. 350 mg/kg d. 500 mg/kg 98 / 200 98) You suspect that your patient has an enlarged submandibular salivary gland. You expect the enlarged gland? a. only to be detectable by radiographical examination. b. to be palpable intraorally c. To be palpable both intra- and extraorally d. to be palpable extraorally. 99 / 200 99) You notice that your patient’s submandibular lymph nodes are enlarged. You would look for potential infection sites in the? a. Hard palate and upper lip. b. hard palate, upper lip, upper central incisor and lower first molar c. Hard palate. d. Hard palate, upper lip and upper central incisor. 100 / 200 100) The area used to anesthetized the pulp tissue corresponding alveolar bone and buccal gingival tissue to maxillary 1st, 2nd, 3rd is called a. Greater palatine nerve block b. PAS, nerve block c. ASA nerve block d. MSA nerve block 101 / 200 101) Most frequent local anesthetic clinical use:? a. management of cardiac arrhythmias b. treatment of grand mal seizure c. regional anesthetia d. analgesia e. management of increased intracranial pressure 102 / 200 102) A good local anesthetic agent shouldn’t cause:? a. Fast onset and long duration of action b. Vasodilation c. Local irritation and tissue damage d. systemic toxicity 103 / 200 103) The trigeminal nerve is the sensory fibres form the semilunar ganglion (the Gasserian ganglion). Where does these ganglion or Gasserian lie in the bottom of the following? a. the posterior cranial fossa b. the roof of the cranial fossa c. the anterior cranial fossa d. the middle cranial fossa 104 / 200 104) A vasoconstrictor does not 😕 a. Reduce a local anesthetic uptake by the nerve b. Decrease the blood level c. Hence the chance of toxicity d. Retard the removal of drug from the injection site 105 / 200 105) Which of the following local anesthetics is only used for surface or topical anesthesia ? a. Bupivacaine b. Tetracaine c. Cocaine d. Procaine 106 / 200 106) The primary mechanism of action of local anesthetics is:? a. Stimulation of voltage-gated N-type calcium channels b. Blockade the GABA-gated chloride channels c. Blockade of voltage-gated sodium channels d. Activation of ligand-gated potassium channels 107 / 200 107) Most local anesthetics can cause:? a. All of the above b. Depression of abnormal cardiac pacemaker activity, excitability, conduction c. Depression of the strength of cardiac contraction d. Cardiovascular collapse 108 / 200 108) During an inferior alveolar nerve block the needle ideally passes? a. Inferior to medial pterygoid. b. through medial pterygoid c. anterior and lateral to medial pterygoid d. Posterior and medial to medial pterygoid. 109 / 200 109) At what time are professionals MOST at risk for a needle stick? a. Disassembly of syringe b. Recapping c. Giving the injection d. Unsheathing the needle e. Assembling the syringe 110 / 200 110) Reducing agent local anesthetics solution is ? a. Thymol b. Adrenaline c. Methyl paraben d. Sodium metabisulphite e. Ringer lactate 111 / 200 111) Which of the following local anesthetics is more likely to cause allergic reaction? a. Ropivacaine b. Procaine c. Lidocaine d. Bupivacaine 112 / 200 112) Which of the following local anesthetics is called a universal anesthetic? a. Bupivacaine b. Ropivacaine c. Lidocaine d. Procaine 113 / 200 113) The duration of action of local anesthetics agents are divided in short, intermediate and long. Which one of the following is classified as the short one? a. Bupivacaine HCL 0.5% b. Lidocaine HCL 2% c. Prilocaine HCL 4% d. Articaine HCL 4% 114 / 200 114) Factor(s) which determine extent of systemic local anesthetic absorption: a. intrinsic drug properties b. injection site vascularity c. whether or not epinephrine was used to provide local vasoconstriction d. initial dose e. All are not correct 115 / 200 115) The function organization of axon and schwann cell is called a. Neuron cell b. Nerve fiber c. Nerve cell d. Call myelin sheath 116 / 200 116) The technique used to anesthetized the maxillary canine, lateral incisor, and central incisors and buccal gingival is called a. PSA nerve block b. Greater palatine nerve block c. MSA nerve block d. ASA nerve block 117 / 200 117) Which one is the Amide anesthetics type a. Lidocaine b. Procaine c. Movocaine d. Cocaine 118 / 200 118) Local anesthetic used in greater than 50% of rhinolaryngologic cases:? a. bupivacaine (Marcaine) b. prilocaine (Citanest) c. cocaine d. tetracaine (pontocaine) e. mepivacaine (Carbocaine) 119 / 200 119) A patient with epilepsy is scheduled for root planning and scaling with local anesthetic today. What should the dental hygienist know about this condition? a. Epilepsy is a relative contraindication to ester type anesthetics b. In low doses local anesthetic is an anti-convulsant c. The patient should be pre-medicated prio to treatment d. Epilepsy is an absolute contraindication to amide type anesthetics e. Oxygen should be available to deliver in an emergency. 120 / 200 120) Agents added to local anesthetics that prolonged local anesthetic duration of action? a. Epinephrine b. phenylephrine (Neo-Synephrine) c. dextran d. Epinephrine, phenylephrine (Neo-Synephrine) and dextran 121 / 200 121) Most commonly used local anesthetic for rhinolaryngologic cases a. ropivacaine (Naropin) b. mepivacaine (Carbocaine) c. tetracaine (pontocaine) d. bupivacaine (Marcaine) e. cocaine 122 / 200 122) Afferent or sensory nerves conduct impulses to the a. Pain stimulus b. Motor nerves of muscles c. Periphery of the body d. CNS. 123 / 200 123) Indicate the local anesthetic agent, which has a shorter duration of action:? a. Articaine b. Procaine c. Lindocaine d. Bupivacaine 124 / 200 124) All of the following methods will REDUCE the chance of needle breakage, EXCEPT one. Which one is the exception? a. Using a larger gauge needle b. Not bedding the needle excessively c. establishing a firm hand rest d. Minimizing the need for redirection in tissue e. Burying the needle to the hub 125 / 200 125) The area of insertion needle of local anesthesia is about 1cm medial from 1st and 2nd maxillary molar on the hard palate foramen is called a. MSA nerve block b. Greater Palatine nerve block c. ASA nerve block d. PSA nerve block 126 / 200 126) Toxicities associated with systemic epinephrine absorption following local anesthetic use with epinephrine included in the local anesthetic solution a. Hypertension and Arrhythmias b. Hypertension c. Neither d. Arrhythmias 127 / 200 127) Nerve impulse travel in myelinated nerves by a process called what? a. Salutatory conduction b. Nodes of Ranvier c. Domino effect d. Relative refractory 128 / 200 128) Neurotoxicity associate with local anesthesia: sensory anesthesia, bowell & bladder sphincter dysfunction, paraplegia — may because by nonhomogeneous local anesthetic distribution? a. transient radicular irritation b. anterior spinal artery syndrome c. cauda equina syndrome 129 / 200 129) The axons of peripheral nerve is supported by a. Support by Connective tissue b. Support by blood c. Supported by cell d. Support by muscle 130 / 200 130) ropivacaine (Naropin):less cardiotoxic then bupivacaine (Marcaine) a. false b. true 131 / 200 131) Blanching at the site of injection is caused by:? a. Warm LA solution b. Decreased tissue tension c. local effects of reducing agent in LA solution d. Increased tissue tension e. Infection at the site of injection 132 / 200 132) What is the MOST important reason hemostats/cotton roll pliers are part of the armamentarium? a. They are used to place the plastic cap on the needle b. they are used to unscrew the needle from the syringe c. They are used for the retrieval of a broken needle d. They are used to remove the Deptinpatch e. They are used to place a cotton roll on the needle 133 / 200 133) Manifestation of systemic toxicity a. CNS toxicity, cardiovascular toxicity and neurological symptoms b. cardiovascular toxicity c. CNS toxicity d. neurological symptoms 134 / 200 134) Correct statements concerning cocaine include all of the following EXCEPT:? a. Causes sympathetically mediated tachycardia and vasoconstriction b. Cocaine is often used for nose and throat procedures c. Myocardial depression and peripheral vasodilation d. Limited use because of abuse potential 135 / 200 135) Technique of anesthesia in which local anesthetic solution is injected into the vein is ? a. Epidural anesthesia b. Intra venous regional anesthesia c. No such technique exists. d. Nerve block e. Infiltration anesthesia 136 / 200 136) Individual nerve fibers(axons) are surround and separated from each other by a. Fasciculi b. Perineurium c. Edoneurium d. Epineurium 137 / 200 137) For a local anesthetic to be clinically useful is a. It should be compatible with the tissues b. All to the above. c. It’s action should be completely reversible d. It’s action should be temporary 138 / 200 138) The concentration of epinephrine that is optimal for hemostasis is what? a. 1:150,000 b. 1:200,000 c. 1:50,000 d. 1:5000 e. 1:100,000 139 / 200 139) vasoconstrictor in local anesthetic(LA) solution is used to ? a. Decreases depth & duration LA. b. Increases toxic effects of LA c. Reduces toxic effects of LA d. Increases bleeding. 140 / 200 140) The technique that use the non-dominant hand to retract the buccal soft tissue at the area of coronoid notch of mandible , and index finger on posterior border of extra oral mandible is called a. Gow-Gate Nerve block b. IAN nerve block c. Mental Nerve Block d. Akinosi Nerve Block 141 / 200 141) The most widely help theory on nerve transmission attributes conduction of the nerve impulse to changes in the a. Axolemma. b. CNS c. Axoplasm. d. Cell body. 142 / 200 142) Which one of the following agents is classified as the long one? a. Prilocaine 4% b. Articaine HCL 4% c. Bupivacaine HCL 0.5% d. Lidocaine HCL 2% 143 / 200 143) Which of the following local anesthetics in an acetanilide derivative? a. Procaine b. Cocaine c. Tetracaine d. Lidocaine 144 / 200 144) The infraorbital nerve are supply for the front teeth both side left and right of the maxillary , especially for anterior superior alveolar nerve twigs and leave the trunk just before it exit of the infraorbital foramen and outside the foramen twigs to the skin between the nostril and eye.Which area is used for injection local anesthesia for these teeth? a. at the apex between the first and second molar b. at the apex between the canine and first premolar c. at the apex between the second and third molar d. at the apex between the second premolar and first molar 145 / 200 145) Clinical use(s) of EMLA applications:? a. arterial cannulation b. venipuncture c. myringotomy d. lumbar puncture 146 / 200 146) The technique used to anesthetizes the maxillary 1st and 2nd premolars, canine, lateral incisor, central incisor, corresponding alveolar bone, and buccal gingiva is called a. Infraorbital nerve block b. MAS nerve block c. ASA nerve block d. PSA nerve block 147 / 200 147) Unmeyelinated fiber is surround by a. Wrapping by nerve b. A single wrapping c. Plural wrapping d. Wrapping by artery 148 / 200 148) One of the many proprietary names for lidocaine is what? a. Candicaine HCL b. 35%Polocaine c. Xylocaine HCL d. Sandonest HCL e. Mepivacaine 149 / 200 149) Which one are the three major types of local anesthesia can be performed in the maxillary for pain control? a. Field block, infiltration , and intraseptal b. Field block, infraorbital , intraosseus c. Nerve block, field block, and topical d. Infiltration, field block, and nerve block 150 / 200 150) How many major types of Local Anesthesia can be performed in the maxillary for pain control? a. Four major types b. One major type c. Two major types d. Three major types 151 / 200 151) Which one are called local anesthesia nerve block? a. PSA , MSA, ASA b. Periodontal ligament injection c. Intraseptal injections d. Supraperiosteal injection 152 / 200 152) If the Lidocaine 2% with Epinephrine 1:100,00 was used. Which one of the following is selected for the maximum dose recommendation? a. 7.0 mg/kg b. 8.0 mg/kg c. 2.0 mg/kg d. 6.6 mg/kg 153 / 200 153) Primary side effect/toxicities associated with local anesthetic use:? a. allergic reactions b. neither c. systemic toxicity d. allergic reactions and systemic toxicity 154 / 200 154) which one of the following local anesthetics is an ester of benzoic acid:? a. Procaine b. Ropivacaine c. Cocaine d. Lidocaine 155 / 200 155) The technique that the mouth must be open widely during injection and the area of injection from contralateral premolar region is called a. IAN block b. Gow-Gate nerve Block c. Akinosi Nerve Block d. Mental Nerve Block 156 / 200 156) Advantage(s) of 5% lidocaine (Xylocaine)-prilocaine (Citanest) cream (eutectic mixture) is? a. even absorption b. no local irritation, even absorption and no systemic toxicity c. higher melting point of combined drug than either lidocaine (Xylocaine) or prilocaine (Citanest) alone d. no systemic toxicity e. no local irritation 157 / 200 157) Local anesthetic most likely to cause cyanosis secondary to reduced oxygen transport: a. prilocaine (Citanest) b. lidocaine (Xylocaine) c. dibucaine (Nupercainal, generic) d. bupivacaine (Marcaine) e. procaine (Novocain) 158 / 200 158) Typically a zone of differential sympathetic nervous system blockade? a. spinal b. epidural and spinal c. epidural 159 / 200 159) Which of the following fibers is the first to be blocked? a. B and C fibers b. Type A gamma fibers c. Type A beta fibers d. Type A alpha fibers 160 / 200 160) A patient attends for an extraction of a lower molar tooth. Following the administration of an inferior alveolar nerve block only, the patient complains of pain during the procedure.Which one of the following nerves is the most likely to be responsible for the perception of this pain? a. Long buccal nerve b. Mental nerve c. Incisive nerve d. Facial nerve e. Marginal mandibular 161 / 200 161) For therapeutic application local anesthetics are usually made available as salt for the reason of:? a. More stability and greater water solubility b. Higher stability and greater lipid solubility c. Less local tissue damage and more potency d. Less toxicity and higher potency 162 / 200 162) All of the following are reasons to include a vasoconstrictor, ECEPT one.Which one is the EXCEPTION? a. improve field of vision for treatment b. lower anesthetic toxicity c. lower blood flow to injection site d. increase duration of local anesthetic e. increase anesthetic blood levels 163 / 200 163) Which one is the best answer for nerve block of local anesthesia in the maxillary nerve block? a. PSA,MSA,ASA, Mental Nerve, Inferior Alveolar Nerve Block and lingual nerve block b. Supraperiosteal injection, infraseptal injection and periodontal ligament injection c. PSA,MSA,ASA, Greater Palatine and Lingual Nerve block d. PSA, MSA,ASA, Infraorbital , Greater palatine , and Naso palatine nerve 164 / 200 164) Which of 2 nerves blocked when injection is given in pterygo mandibular space? a. Buccal & inferior alveolar nerve b. Lingual & inferior alveolar nerve c. Buccal & lingual nerve d. Buccal nerve & infra orbital nerve e. inferior alveolar & posterior superior alveolar nerve 165 / 200 165) Duration of sensory anesthesia is likely to be extended for abdominal regional anesthesia? a. True b. False 166 / 200 166) The technique can be used to anesthetize the palatal soft tissue of the teeth posterior to maxillary canine and corresponding alveolus and hard palate is called a. PSA nerve block b. Infraorbital nerve block c. Naso palatine nerve block d. Greater palatine nerve block 167 / 200 167) When injecting Local anesthetic solution in maxilla on buccal side. Which of the following technique is used? a. sub mucosal b. intra septal c. sub periosteal d. supra periosteal e. intra osseous 168 / 200 168) As with all local anesthetics, the dose varies depending on the area to be anesthetized, the vascularity of tissues, individual tolerance, and the techniques of anesthesia. Which type of the following patient should be decreased the dose for them? a. children patient b. adult patient c. debilitate or elderly patient d. young patient 169 / 200 169) The mucosa of the hard palate is? a. keratinised and has submucosa and minor salivary glands posterolaterally b. non-keratinised and lacks submucosa and minor salivary glands. c. non-keratinised and has submucosa and minor salivary glands posteromedially d. keratinised and lacks submucosa and minor salivary glands. 170 / 200 170) Topical antiseptic does which of the following? a. Makes patient more comfortable during initial penetration b. Reduces the risk of a local anesthetic overdose c. Allows the clinician to practice their site of penetration d. Lessens the chance of inflammation or infection e. Numbs 2-3mm of tissue prior to injection 171 / 200 171) Correct statements concerning lidocaine include all of the following EXCEPT:? a. It is an universal anesthetic b. It widely used as an antiarrhythmic agent c. It is metabolized in liver d. It has esteratic linkage 172 / 200 172) Local anesthetic not recommended for peripheral nerve blockade: a. bupivacaine (Marcaine) b. tetracaine (pontocaine) c. lidocaine (Xylocaine) d. ropivacaine (Naropin) 173 / 200 173) Inferior alveolar nerve block (IAN) mouth must be open for this technique, best to utilize mouth drop, the depth of injection is about a. 27mm to 29mm b. 29mm to 30 mm c. 30 mm to 33 mm d. 25 mm to 27mm 174 / 200 174) In 1980, when the first edition of Stanley F. Malamed, and the Sixth edition of Hand book of local anesthetic were available in dental cartridge form include: Lidocaine, Articaine, Prilocaine, Mepivacaine, and Bupivacaine. Which one of the following was selected for the maximum dose recommendation related to the Articaine 4% with epinephrine 1:100,000 per kilogram of the patient weight? a. 6.6 mg/kg b. 7,0 mg /kg c. 2.0 mg/kg d. 8.0 mg/kg 175 / 200 175) Vasoconstrictors are less effective in prolonging anesthetic properties of 😕 a. Lidocaine b. Mepivacaine c. Bupivacaine d. Procaine 176 / 200 176) Which one is the ester type of local anesthetic a. Procaine b. Mepivacaine( or carbocaine) c. Bupivacaine(or Marcaine) d. Prilocaine ( or citanest) 177 / 200 177) Factors enhancing bupivacaine (Marcaine) toxicity? a. arterial hypoxemia b. Pregnancy, presence of calcium channel blockers, arterial hypoxemia, acidosis and hypercarbia c. presence of calcium channel blockers d. Pregnancy e. acidosis and hypercarbia 178 / 200 178) Which of the following statements is NOT correct for local anesthetics? a. A charge cationic form penetrates biologic membranes more readily than and uncharged form b. In a tissue they exist either as an uncharged base or as a cation c. Local anesthetics are much less effective in inflamed tissues d. Low ph in inflamed tissues decreases the disscociation of nonionized molecules 179 / 200 179) Surface activity and low toxic potential? a. Lidocaine b. Benzocaine c. procaine d. Cocaine e. Bupivacaine 180 / 200 180) When given nerve block , will also cause anesthetized to the lower eyelid, lateral aspect of nasal skin tissue, and skin of infraorbital region is called a. Infraorbital nerve block b. Middle superior alveolar nerve block c. Posterior superior alveolar nerve block d. Anterior superior alveolar nerve block 181 / 200 181) Prilocaine has all of the following properties EXCEPT:? a. It has ester linkage b. It readily penetrates the skin and mucosa c. Its metabolic product can inhibit the action of sulfonamides d. It is relatively short-acting 182 / 200 182) A successful inferior alveolar nerve block will produce anesthesia of the? a. lower lip, mandibular teeth and labial gingivae of the anterior mandibular teeth b. lower lip. c. lower lip, mandibular teeth and labial gingivae of the anterior and buccal gingivae of the posterior mandibular teeth. d. lower lip and mandibular teeth. 183 / 200 183) Local Anesthetic deposited near a larger terminal branch of a nerve is called a. Infiltration b. Nerve Block c. Field block d. Periapical injection 184 / 200 184) Most serious toxic reaction to local anesthetics is:? a. Cardiovascular collapse b. Respiratory failure c. Seizures d. All of the above 185 / 200 185) The technique Provides sensory input for the lower lip skin, mucous membrane, pulpal and alveolar tissue for the premolar, canine and incisors on the side blocked is called a. Akinosi Nerve block b. Gow-Gate Nerve Block c. Mental Nerve Block d. IAN Block 186 / 200 186) Which of the following local anesthetics is more cardiotoxic? a. Mepivacaine b. Procaine c. Lidocaine d. Bupivacaine 187 / 200 187) Neurotoxicity following local anesthesia: lower extremity paresis– predisposing conditions may include advanced age and peripheral vascular disease a. transient radicular irritation b. cauda equina syndrome c. cauda equina syndrome and anterior spinal artery syndrome d. anterior spinal artery syndrome 188 / 200 188) Most common complication of posterior Superior alveolar nerve block is:? a. Trismus b. Blanching of the area c. Infection d. Hematoma e. Facial palsy 189 / 200 189) In the dental office, the MOST important consideration when selecting a syringe type is the ability of the following:? a. Be cost effective b. Aspirate c. Accept a 30 gauge needle d. Delivery anesthetic solution to a patient 190 / 200 190) A small bubble of approximately 1 to 2 mm diameter will frequently be found in the local anesthetic cartridge. These bubbles are cause by what? a. Shaking the cartridge vigorously b. Oxygen gas being trapped in the cartridge c. The anesthetic solution being frozen d. Nitrogen gas being pumped in during manufacturing e. The cartridge was stored in a chemical disinfectant 191 / 200 191) Disto buccal root of upper first molar is supplied by:? a. Buccal nerve b. Mental nerve c. Infra orbital nerve d. Posterior superior alveolar nerve e. Middle superior alveolar nerve 192 / 200 192) Indicate the local anesthetic, which is more lipid-soluble:? a. Bupivacaine b. Mepivacaine c. Procaine d. Lidocaine 193 / 200 193) Which technique is useful for infected patients with trismus, fractured mandibles, and mentally handicapped individuals a. Lomng Buccal Nerve Block b. IAN Block c. Mental nerve Block d. Akinosi Nerve Block(R) 194 / 200 194) Which portion of the nerve do local anesthetics work on? a. Dendrites b. Neuron c. Myelinated sheath d. Nerve membrane e. Schawann cellS 195 / 200 195) If Articaine 4% with epinephrine 1:100,000 or 1:200,000 was used with patient 80kg. Which one of the following option was selected? a. 350 mg/kg b. 650 mg/kg c. 490 mg/kg d. 560 mg/kg 196 / 200 196) All of the following are acceptable ways of recapping a needle EXCEPT? a. Carefully direction the cap over needle with fingers b. Securing cap with fingers on vertical syringe c. Implementing cotton roll pliers or a hemostat d. Utilizing “Card” or other holding device e. Performing the one handed scoop technique 197 / 200 197) Which one of the following groups is responsible for the duration of the local anesthetic action? a. Intermediate chain b. Ionizable group c. Lipophilic group d. Nonionize group 198 / 200 198) Which of the following local anesthetics is a thiophene derivative? a. Procaine b. Lidocaine c. Ultracaine d. Mepivacaine 199 / 200 199) The technique insertion of mucobuccal fold between apex of 2nd and 3rd molars at 45 degree is called a. ASA, nerve block b. Infraorbital nerve block c. MSA, nerve block d. PSA, nerve block 200 / 200 200) Lidocaine (Xylocaine) cardiotoxicity — electrophysiological characteristics a. reduced phase 4 depolarization b. ECG -PR interval prolongation c. All are not correct d. increased conduction velocity e. reduced automaticity Your score isThe average score is 0% Facebook 0% Restart quiz Any comments? Send feedback