ENDO Quizzes and the correct answers rated A solutions 2023

Pictures of Instruments from Quiz 1 Endo explorer DG16 Woodsen #2 Spreader Plugger Endo Z Bur What color corresponds to the ISO size: size 10 size 15 size 20 size 25 size 30 size 35 size 40 size 10- purple size 15- white size 20- yellow size 25- red size 30- blue size 35- green size 40- black What is a Master apical file? a. largest file that goes to working length b. describes apex in width c. describes length of canal d. corresponds with gutta-percha point to obturate the canal e. all of the above e. all of the above 1. What is the Master Apical File? a. To introduce a smaller file and pass the working length b. The distance from a coronal reference point to the point at which canal preparation and Obturation should terminate. c. Reintroducing a small file during canal preparation. d. To introduce a smaller file2-mm short of the working length b. The distance from a coronal reference point to the point at which canal preparation and Obturation should terminate. 2. What is the Crown-Down Technique? a. A technique of canal instrumentation with early flaring of the coronal 2/3 of the root canal system prior to apical chemomechanical preparation. b. A technique of cleaning and shaping where opposing physical forces guide each instrument to stay center and shape the root canal system. c. A cleaning and shaping technique allowing smaller files to clean and shape the apical 1/3 followed by sequentially larger files. d. All the above e. None of the above a. A technique of canal instrumentation with early flaring of the coronal 2/3 of the root canal system prior to apical chemomechanical preparation. 3. If I snip 3 mm from a 50/0.08 gutta percha, what would be the tip size now? a. 5.24 mm b. 0.508 mm c. 0.58 mm d. 0.74 mm d. 0.74 mm 4. What is the D0 (at the tip size) of an ISO file size 15? a. 15 mm b. 1.5 mm c. 0.15 mm d. 0.015 mm c. 0.15 mm 5. Rubber Dam is the standard of care in endodontic practice. a. True b. False a. True 6. How much gutta-percha should be left for post placement? a. 3-4 mm b. 4-5 mm c. 5-6 mm d. Post should be as long as possible for retention b. 4-5 mm 7. Depending on the obturation technique, when possible, what is the safest procedure to remove gutta percha for post ? a. Parapost drill are used in sequence to gain the desired depth and shape b. Using a hot instrument and the remaining GP is vertically condensed c. Gates Glidden drills are used d. Peeso reamers b. Using a hot instrument and the remaining GP is vertically condensed 8. What can happen if lateral cones are not placed deep enough or get crinkled during placement? A. overfilling of obturation materials B. overextension of obturation materials C. voids or discrepancies may be seen in the body of the root canal D. none of the above C. voids or discrepancies may be seen in the body of the root canal 9. The proper shape of an access opening in a maxillary first premolar is: A. rectangular B. triangular C. rounded rectangular D. rounded triangular C. rounded rectangular 10. Which is an indication that a maxillary 1st premolar may have only one canal? A. only canal one is visible on the radiograph B. the canal is larger than usual for the tooth and centered bucco-lingually C. it is a smaller-than-average tooth D. only one root is visible on a pre-op radiograph B. the canal is larger than usual for the tooth and centered bucco-lingually 11. What are some techniques to avoid ledging? A. gentle apical pressure B. quarter clockwise turns C. frequent flushing with NaOCI D. a and c only E. a, b and c E. a, b and c 12. All of the following are the advantages of preflaring the root canal, except: A. avoids apical debris extrusion B. less stress of files C. increase the chance of instrument separation D. decreases chances of filing errors C. increase the chance of instrument separation 1. Which one of the following is not an objective of the biomechanical preparation of root canal? A. continuous tapered canal B. maintain canal shape and curves C. keep the access cavity as small as possible irrespective of canal configuration D. maintain apical foramen location E. create an apical seat/stop C. keep the access cavity as small as possible irrespective of canal configuration