Jan 2021 Endo

During non-surgical root canal treatment of a lower molar, a working length radiograph was to be taken from a distal angle. Which of the following will be encountered regarding the Buccal Object (SLOB) Rule?

Which of the following is an error that occurs during obturation of the root canal?

A 20-year-old patient is complaining of pain in the lower right quadrant. Upon examination, #47 responded normally to vitality testing, while #46 has a sinus tract. Which of the following is the appropriate treatment plan for tooth #46?

A 36-year-old man came to the clinic with a chief complaint of mild persistent pain on tooth #35. The pain is triggered by biting pressure, and the tooth has previous endodontic treatment. Bitewing radiograph shows a radiolucent line below the filling margin indicating recurrent decay. The periapical radiograph shows a short radicular filling, obturation, and periapical radiolucency on the apex of tooth #35. Probing depths are within normal limits. Which of the following is the cause for the RCT failure?

Which of the following is the most common cause of single tooth discoloration?

Which of the following is the cross-section of the Flex-R file?

A 44-year-old patient complains of pain on biting over the past three months related to tooth #26. The tooth was endodontically-treated more than four years ago. Clinically, the tooth was tender to both percussion and palpation. Radiographically, there were apical radiolucencies around all three roots. Which of the following are the pulpal and periapical diagnoses?

Which of the following materials can be used to inhibit root resorption in an avulsed tooth following replantation?

A 40-year-old patient presented with swelling in her upper right side of the maxilla. Upon examination, tooth #16 showed a negative response to cold and EPT but is tender to percussion and palpation. After accessing the tooth, a pulp stone was found. How could the pulp stone be removed?

A 33-year-old healthy man presents to the dental clinic seeking a permanent restoration for tooth #37. On examination. tooth #37 has a defective temporary filling placed immediately after endodontic treatment four years ago. Tooth #37 responds normally to percussion and palpation. Periodontal probing ranged between 1-2 mm. Which of the following is the most likely cause of endodontic treatment failure?

Which of the following is applicable in relation to the walking bleach technique?

Which of the following is an important requirement for a periodontal ligament (PDL) injection effectiveness?

A 50-year-old woman presents to the dental clinic for evaluation of upper left premolar and molar teeth. The patient stated that she had severe spontaneous pain 6 weeks ago while on a holiday. The pain has eventually subsided without dental intervention. Teeth #24, 26, and 27 responded normally to all endodontic tests. Tooth #25 did not respond to cold. A sinus tract was noted on the alveolar mucosa buccal to tooth #25. Which of the following is the endodontic diagnosis for tooth #25?

Which of the following is the endodontic emergency treatment for teeth with symptomatic irreversible pulpitis?

A 64-year-old man presents to the dental clinic complaining that he cannot chew on the lower right side of the jaw. The pain started four weeks ago and has intensified over the last three days. Application of cold to tooth #46 elicited an excruciating pain that lasted for about a minute. The adjacent premolar and molar teeth responded normally to pulpal, periapical and periodontal tests. Which of the following is the correct diagnosis for tooth #46?

What length should the spreader go for optimum cold lateral compaction?

Which of the following roots is ideal for a post and core on a maxillary first molar?

Which of the following is a definition of concussion injury?

Which endodontic instrument has an active tip?

A 27-year-old healthy woman presents to the dental clinic for a check-up. Upon examination, tooth #16 did not respond to thermal and electrical stimulation. A sinus tract was noted in the attached gingiva between #16 and #17. All upper-right premolar and molar teeth responded normally to percussion and palpation tests. Pocket probing depths ranged between 2-3mm. Which of the following is the recommended management for tooth #16?

A 59-year-old patient complains of a pimple on his gum in the upper right area. Upon clinical exam, tooth #17 does not respond to cold and there is no tenderness to biting or percussion. A sinus tract is present opposite to the upper right molar. Which of the following is the recommended treatment plan for tooth #17?

Which of the following is the most appropriate method in the differential diagnosis between periodontal abscess and apical abscess?

Which of the following devices can be used to measure oxygen concentration in the pulp?

The most flexible endodontic files are the

The image depicts Which of the following procedures?

D0 with 0.15 diameter, what is the color of the file according to ISO stander?

A patient came to your clinic with pain in a previously endodontic treated tooth, radiograph shows short obturation and apical lesion. The treatment of choice is?

A severe toothache at night usually means extensive degeneration of the pulp. this calls for more than a conservative type of pulp therapy

D0 with 0.10 diameter, what is the color of the file according to ISO stander?

The image depicts Which of the following procedures?

In a Primary Endo secondary Perio lesion, What is the appropriate treatment?