Endo Past Exams

gonna end my life smh

Question #: 1 

Which statement is NOT true?

A. According to the 2010 American Association of Endodontists Position Statement, endodontic claims are among the most frequently filed malpractice claims in dentistry.

B. According to the 2010 American Association of Endodontists Position Statement, patien ingestion or aspiration of root canal treatment instruments are rare.

C. According to the 2010 American Association of Endodontists Position Statement, in instances where a patient has ingested or aspirated an instrument, a finding of negligence by the offending dentist would be typical.

D. According to the 2010 American Association of Endodontists Position Statement, tooth isolation using the dental dam or high volume suction is an integral and essential step for any nonsurgical endodontic treatment.

D

Question #: 2

Which statement(s) is(are) true about Type IV hypersensitivity? (Select all that apply.)

A. It is the most common Penicillin allergy.

B. It is an immediate reaction limited to the contact area.

C. It does not involve entire body.

D. It is an immune response resulting from exposure to chemicals.

C, D

Question #: 3

With respect to the advantages of the use of rubber dam, which of the following statements is true?

A. Maintenance of aseptic technique.

B. Prevention of injury to tissue with caustic endodontic medicaments.

C. Prevention of swallowing or aspiration of instruments.

D. All of the above.

D

Question #: 4

Which statements is(are) true for pre-procedural mouth rinse? (Select All that apply.)

A. Patients' use of an anti-microbial mouthwash of 0.12% chlorhexidine gluconate solution for 30 seconds prior to intra-oral procedures will reduce the number of viable oral organisms.

B. There is strong scientific evidence that pre-procedural mouth rinsing prevents clinical infections among oral health care workers.

C. It is indicated where medical history warrants extreme caution.

D. It reduces the levels of oral microorganisms during routine dental procedures with rotary instruments.

A, C, D

Question #: 5

Which statements is (are) true? Before an endodontic treatment on a tooth, we need to check that the tooth (select all that apply):

A. is restorable.

B. is retainable.

C. can be isolated with cotton rolls.

D. can be sealed between appointments.

A, C, D

Question #: 6

Which of the following is (are) a correct step in banding? (Select all that apply.)

A. Relieving of proximal contacts.

B. Occlusal reduction.

C. Selection of band and cementation, using temporary cement.

D. Burnishing, excess cement removal.

A, B, D

Question #: 7

The rubber dam should be kept in place by the use of: (select all that apply)

A. Clamps.

B. Wedges.

C. Pieces of rubber dam.

D. Pieces of dental floss.

A, B, C, D

Question #: 8

Banding is required to:

A. Prevent fracture during and after treatment.

B. Improve retention of temporary filling materials.

C. Prevent gingival proliferation into the defect.

D. All of the above.

D

Question #: 9

What condition below describes a true emergency scenario in endodontic patients?

A. Patient said that he has a toothache and has had some swelling over the buccal side of the tooth. The radiograph shows a sinus tract traced to tooth 2.6.

B. Patient has had on and off pain when chewing which started a week ago. It became worse the last 2 days and he could not sleep last night.

C. A visit should be scheduled for mutual convenience of the patient and the dentist.

D. Pain started 2 weeks ago and patient need to take pain medications every day to control the pain.

B

Question #: 10

A patient came in with symptoms of spontaneous, throbbing pain and was not able to sleep in the night. He has no allergy to food and medication. He is taking baby aspirin, propranolol (hypertension) and Jardiance (Diabetes type 2). What is the most adequate treatment and care for him? Diagnosis is symptomatic irreversible pulpitis with normal periapex.

A. Advise the patient to take analgesics of Advil every 6 hours and schedule him this week 

for treatment.

B. Perform pulpectomy on the affected tooth and advise patient to take Advil every 6 hours 

for post op pain control.

C. Perform pulpectomy on the affected tooth and advise patient to take Tylenol every 6 

hours for post op pain control.

D. Perform pulpectomy on the affected tooth and prescribe amoxicillin control infection.

C

Question #: 11

What is the primary goal of apexification in a young permanent tooth with an open apex?

A. To remove the infected pulp tissue and obtain proper apical seal to prevent reinfection.

B. To disinfect the root canal space and maintain pulp vitality to allow continued root  development.

C. To perform a root canal treatment and seal the root canal space with gutta percha.

D. To extract the tooth and replace it with a prosthetic.

B

Question #: 12

Which of the following is an indication for apexogenesis?

A. A necrotic pulp with no response to cold or heat tests.

B. Chronic apical abscess in a tooth with open apex.

C. A fully developed root with no symptoms of infection.

D. An open apex in an immature tooth with a vital pulp.

D

Question #: 13

What is the primary purpose of thermal treatments in NiTi files?

A. To increase the cutting efficiency.

B. To improve flexibility and fracture resistance.

C. To change the colour of the files.

D. To reduce the need for irrigation.

B

Question #: 14

What is a key biological objective of root canal instrumentation?

A. Forcing necrotic debris beyond the foramen to ensure complete removal.

B. Confining instrumentation to the roots and avoiding extrusion of debris.

C. Minimizing space within the canal to prevent bacterial growth.

D. Preserving all tissue within the root canal space.

B

Question #: 15

Law of colour change states:

A. Colour of the pulp chamber floor is lighter than the walls.

B. Colour of the pulp chamber floor is similar to the walls.

C. Colour of the pulp chamber floor is darker than the walls.

D. None of the above.

C

Question #: 16

C-shaped canals are difficult to:

A. Access.

B. Restore.

C. Disinfect.

D. Both a and b.

C wtf

Question #: 17

What is the primary role of biofilms in endodontic infections?

A. To enhance immune response.

B. To protect bacteria from antimicrobials.

C. To increase the oxygen supply to resident bacteria.

D. To facilitate nutrient exchange between bacteria.

B

Question #: 18

Which of the following is a characteristic of Enterococcus faecalis that makes it difficult to eradicate from root canals?

A. Due to it its ability to form spores.

B. Due to its resistance to high temperatures.

C. Due to its ability to survive in low-nutrient environments.

D. Due to its rapid growth rate when nutrients are available.

C (cuz its facultative i guess, idk)

Question #: 19

Which of the following is a key feature of the cell-free zone in the dental pulp?

A. High density of fibroblasts.

B. Presence of nerve fibers and capillaries.

C. Abundance of odontoblasts.

D. High condcentration of collagen fibers.

B

Question #: 20

Which signaling molecule is crucial for the differentiation of odontoblasts?

A. Bone morphogenetic protein (BMP).

B. Fibroblast growth factor (FGF).

C. Sonic hedgehog (SHH).

D. Transforming growth factor-beta (TGF-β).

A

Question #: 21

At what point in tooth development does the formation of predentin begin?

A. During the bud stage.

B. During the cap stage.

C. During the bell stage.

D. During the root formation stage.

C

Question #: 22

A 60-year-old patient presents with a dull, aching pain in the lower left premolar 

region. Radiographic examination reveals a radiolucent lesion at the apex of the tooth. The 

tooth has a history of root canal treatment. What is the most likely cause of the lesion?

A. Secondary caries.

B. Fractured root.

C. Persistent infection.

D. Periodontal disease.

C

Question #: 23

A patient presents with a history of sporadic pain in a tooth that is tender to percussion. Radiographic examination reveals a radiolucent lesion at the apex. What is the most likely diagnosis?

A. Reversible pulpitis.

B. Irreversible pulpitis.

C. Symptomatic apical periodontitis.

D. Acute apical abscess.

C

Question #: 24

A coronal reference point is always:

A. A cusp tip.

B. A cavosurface margin.

C. A stable point.

D. A restoration.

C

Question #: 25

Which of the following may interfere with the accuracy of electronic apex locators:

A. Dry pulp chamber.

B. Metallic restorations.

C. Calcified canals.

D. Composite resin restorations.

B

Question #: 26

The imaging modality of choice for diagnosing caries is:

A. Bitewings.

B. Periapicals.

C. CBCT.

D. None of the above.

A

Question #: 27

What cannot be determined with diagnostic periapical radiographs?

A. Mesiodistal width, position, depth of the pulp chamber.

B. Curvature of the roots.

C. Exact number of canals.

D. Evidence of multiple canals.

C

Question #: 28

What is the effect of buccal infiltration with anaesthetic and a vasoconstrictor prior to restorative  procedures on blood flow to the pulp?

A. Reduction by 5%.

B. Reduction by 50%.

C. Increase by 35%.

D. Increase by 15%.

B

Question #: 29

The blast of compressed air at exposed dentin will induce pain due to what process?

A. Startling the patient.

B. Reducing temperature of the tooth.

C. Rapid outward movement of fluids in dentinal tubules.

D. Rapid inward movement of fluid in patient dentinal tubules.

C

Question #: 30

If the pulp becomes necrotic before root growth is complete, the root will be:

A. short with thick dentin walls.

B. short with thin dentin walls.

C. normal length with thick dentin walls.

D. normal length with thin dentin walls.

B

Question #: 31

What is the difference between a cracked tooth and a split tooth?

A. A split tooth precedes a cracked tooth.

B. A split tooth has an incomplete fracture.

C. A split tooth has a separate tooth segment.

D. A cracked tooth is always a split tooth.

C

Question #: 32

Which one of the following statements is correct?

A. Maxillary and mandibular incisors have one canal in 99-100% of cases.

B. Maxillary incisors have one canal in 99-100% of cases.

C. Maxillary first molars have one mesio-buccal canal in 99-100% of cases.

D. Mandibular canines have one canal in 99-100% of cases.

B

Question #: 33

The incidence of finding 3 canals is the highest in the following tooth:

A. Maxillary first premolar.

B. Maxillary second premolar.

C. Mandibular first premolar.

D. Mandibular second premolar.

A (i had no clue)

Question #: 34

The main goal of apexogenesis is to produce:

A. a root end closure by creating a natural apical constriction.

B. a root barrier.

C. a ferrule effect.

D. an apexification.

A

Question #: 35

Teeth with incomplete root formation and pulp necrosis:

A. have to be extracted.

B. have to be replaced by implants.

C. cannot continue their development without intervention.

D. will heal without any treatment.

C

Question #: 36

Which is NOT a contraindication for apexification?

A. Vertical root fractures.

B. Very short roots.

C. Immature teeth with pulpal necrosis.

D. Vital pulps.

C

Question #: 37

Which of the following is the most widely used irrigating solution?

A. Sodium hypochlorite (NaOCl).

B. Ethylendiaminetetraacetic acid (EDTA).

C. Saline.

D. Hydrogen peroxide (H2O2).

A

Question #: 38

Why are deeper carious lesions more injurious to the dental pulp?

A. Increased dentin permeability in deeper areas.

B. Increased length of the dentinal tubule in the deeper areas.

C. Decreased density of dentinal tubules in deeper areas.

D. Decreased diameter of dentinal tubules in deeper areas.

A

Question #: 39

When does apical closure occur in the developing root?

A. At the time of eruption.

B. Approximately one year after eruption.

C. Approximately three years after eruption.

D. Approximately five years after eruption.

C

Question #: 40

What is necessary for pulp and periradicular pathosis to develop?

A. Exposure of pulp tissue.

B. Exposure of dentin.

C. Presence of bacteria.

D. Trauma.

C

Question #: 41

If a patient is to be referred to an endodontist for treatment, when is the most appropriate time for the referral?

A. Before beginning treatment.

B. During treatment when expected difficulties arise.

C. Before weekends.

D. After obturation when separated instruments are present.

A

Question #: 42

What category of longitudinal tooth fractures is most severe?

A. Craze lines

B. Fractured cusps

C. Cracked tooth

D. Vertical root fracture

D

Question #: 43

What is the preferable restoration of a cracked tooth?

A. Post, core, crown.

B. Amalgam core.

C. Cast inlay.

D. Full coverage crown.

D

Question #: 44

What is an advantage of caries removal during access?

A. It enhances the effectiveness of NaOCl.

B. It reduces interappointment pain.

C. It strengthens tooth structure.

D. It allows assessment of the restorability prior to the endodontic treatment.

D

Question #: 45

Prognosis and histologic studies demonstrate that if there is a length error, there are more problems resulting from which of the following?

A. Overfills

B. Underfills

C. No difference 

A

Question #: 46

Which one of the following is an advantage of gutta-percha?

A. Adhesiveness to dentin.

B. Slight elasticity and rebound effect.

C. Expansion on cooling.

D. Adaptation to canal irregularities with compaction.

D

Question #: 47

Scenario: An 8-year old boy had a fall in the playground one day ago and came to your office today. The boy mentioned that there is no spontaneous pain, however, he is experiencing cold sensitivity and avoiding using this area to chew. No alveolar bone fracture and root fracture were present at this moment. You did the clinical tests and the results shown as attached:

What would be your choice of treatment if the first treatment modality was not successful?

A. Vital pulp therapy.

B. Apexogenesis

C. Apexification.

D. Conventional root canal treatment.

C

Question #: 48

Scenario: An 8-year old boy had a fall in the playground one day ago and came to your office today. The boy mentioned that there is no spontaneous pain, however, he is experiencing cold sensitivity and avoiding using this area to chew. No alveolar bone fracture and root fracture were present at this moment. You did the clinical tests and the results shown as attached: 

What is the optimal material to be used for this treatment and on this tooth?

A. Calcium hydroxide.

B. Glass ionomer based material.

C. Mineral trioxide aggregate (MTA).

D. Bio-ceramic repair material.

D (dude how are we supposed to know this)

Question #: 49

Scenario: An 8-year old boy had a fall in the playground one day ago and came to your office today. The boy mentioned that there is no spontaneous pain, however, he is experiencing cold sensitivity and avoiding using this area to chew. No alveolar bone fracture and root fracture were present at this moment. You did the clinical tests and the results shown as attached: 

What irrigant will you use to disinfect and/or to stop hemorrhage?

A. Distilled water.

B. Normal Saline

C. Sodium hypochlorite.

D. Ethylenediaminetetraacetic acid (EDTA).

C

Question #: 50

Scenario: An 8-year old boy had a fall in the playground one day ago and came to your office today. The boy mentioned that there is no spontaneous pain, however, he is experiencing cold sensitivity and avoiding using this area to chew. No alveolar bone fracture and root fracture were present at this moment. You did the clinical tests and the results shown as attached: 

What will be your treatment recommendation for tooth 2.1 at this moment?

A. Resin restoration build up.

B. Conventional root canal treatment.

C. Apexogenesis.

D. Apexification.

E. Regenerative endodontic procedure.

C

Question #: 51

The tip diameter of the first PathFile (purple) instrument (Dentsply) is:

A. 0.13mm

B. 0.10 mm

C. 0.16 mm

D. 0.19 mm

E. 0.15 mm

A

Question #: 52

Which statement(s) is/are correct regarding NiTi files:

A. Alloy consists of 55% nickel and 45% titanium.

B. Low elastic behavior.

C. High fracture resistance.

D. Exist in one crystalline form: Austenite.

E. All the above.

A

Question #: 53

The diameter #30K hand file at D3 is:

A. 0.30 mm

B. 0.33 mm

C. 0.36 mm

D. 0.42 mm

C (30 at tip, 32 at D1, 34 at D2, 36 at D3)

Question #: 54

Which statement(s) is/are correct regarding the biological objectives of root canal preparation:

A. Confinement of instrumentation to the root.

B. Forcing of necrotic debris beyond the foramen.

C. Continuously tapering funnel from the apex to the access cavity.

D. The apical foramen should remain in its original position.

E. All the above.

A

Question #: 55

The aim of root canal treatment is to:

A. Prevent apical periodontitis.

B. Cure apical periodontitis.

C. Eliminate bacteria and toxins from the canal space.

D. Prevent reinfection of the canal space.

E. All the above.

E

Question #: 56

Which of the following is FALSE regarding radiographic assessment:

A. Obtaining ideal vertical angulation can be complicated in patients with shallow palatal vault and mandibular tori.

B. Using the SLOB rule and modifying the horizontal angulation can help to differentiate canals.

C. Using the SLOB rule and modifying the vertical angulation can help to differentiate canals.

D. The radiographic apex often doesn’t coincide with the anatomic apex.

C

Question #: 57

Working length determination involves:

A. Tactile sensation.

B. Apical Sensitivity.

C. Radiographic Assessment.

D. Electronic Apex Locators.

E. All of the above.

E

Question #: 58

The apical constriction is 

A. 0.5 to 1.5 mm apical to the apical foramen 

B. 0.5 to 1.5 mm coronal to the apical foramen.

C. At the apical foramen.

D. Not reproducible.

E. The widest part of the root canal.

B

Question #: 59

When selecting a reference point it should be:

A. Always a cusp tip.

B. Never a cusp tip.

C. Changing throughout the treatment.

D. Intracoronal.

E. None of the above.

E

Question #: 60

Indication(s) to prescribe antibiotics is/are:

A. Systemic involvement.

B. Diffuse swelling.

C. Localized swelling without drainage

D. All of the above.

D

Question #: 61

Which of the following is an objective during cleaning and shaping of root canal? (Select all that apply.)

A. The prepared canal should include the original canal.

B. The preparation should include apical constriction and slightly wider.

C. The prepared canal should end at the apical constriction.

D. The prepared canal should be wide and circular in all dimensions.

A, C

Question #: 62

The estimated working length of a root canal is 19mm, but resistance is encountered when a 

number 10 K-file is inserted in the canal and it is not advancing beyond 14mm. Which one of the 

following is a proper action to reach to estimated working length? (Select all that apply.)

A. Introduction of a precurved K-file #8 into the canal and advanced with a clockwise-counter clockwise rotation to explore the canal.

B. Introduction of a precurved K-file #15 into the canal and advanced with a clockwise-counter clockwise rotation to explore the canal. 

C. Coronal Preflaring either using rotary instruments.

D. Forcing the 10 k-file apically.

A, B, C

Question #: 63

Which of the following is a benefit of using Gates Glidden drills when they are used 

properly? (Select all that apply.)

A. They have a cutting tip.

B. They are safe to use.

C. They are inexpensive.

D. They cannot perforate.

B, C

Question #: 64

Which of the following statements is correct regarding master apical file size (MAF)?

A. ProTaper F2 is always the MAF of Tooth #1.2 with apical moderate curvature.

B. The MAF is always 3 sizes larger than the first file that reaches to the working length.

C. The MAF size should be established during gauging.

D. None of the above.

C

Question #: 65

Which of the following is the objective during initial canal enlargement? (Select all that apply.)

A. To determine the size of master apical file.

B. Create and maintain a glide path.

C. Maintain the position of the apical foramen.

D. To obtain a continuously tapered preparation.

B, C

Question #: 66

What is the most recommended motion to use for Pathfile #3?

A. Slow and continuous rotating motion.

B. Up and down (in and out) pecking motion.

C. Brushing inward.

D. Brushing outward.

A

Question #: 67

Which of the following ProTaper gold instrument(s) is (are) designed to actively engage in the apical third of the canal during canal preparation? (Select all that apply.)

A. ProTaper S1 

B. ProTaper F1

C. ProTaper F2 

D. ProTaper SX

B, C

Question #: 68

Lateral luxation presents with following radiographic findings:

A. Increase in periodontal space.

B. Displacement through the labial bone plate.

C. Temporary tooth intrusion.

D. Both a and b.

D

Question #: 69

Avulsed tooth can be stored in these medium except: 

A. Milk.

B. Saline.

C. Water.

D. Hank’s balanced salt solution.

C

Question #: 70

Subluxation injuries present with the following signs/symptoms EXCEPT:

A. Displacement.

B. Tender to Percussion.

C. Mobile tooth

D. No radiographic abnormality.

A

Question #: 71

Crown root fractures can be treated by:

A. Fragment stabilization.

B. Crown lengthening.

C. Orthodontic extrusion.

D. All of the above.

D

Question #: 72

Which combination of injuries is NOT correct.

A. Small size / high speed: Teeth Fractures.

B. Big size /slow speed: Bone Fractures.

C. Big size /slow speed: Teeth Fractures

D. None.

C

Question #: 73

Indirect pulp capping is a treatment of choice in:

A. Crown fracture and no pulp involvement.

B. Crown fracture and pulp involvement

C. Both a and b.

D. None.

A

Question #: 74

Types of Root fracture are:

A. Concussion.

B. Subluxation.

C. Lateral luxation.

D. Intrusive luxation.

E. All of the above.

?? these aren’t root fractures…

Question #: 75

Common procedural error(s) during access cavity preparation include:

A. Inadequate access.

B. Perforation.

C. Instrument Breakage.

D. Incomplete preparation.

E. All of the above.

E

Question #: 76

The most complex pulp canal anatomy is in which tooth?

A. Maxillary 1st Premolars.

B. Mandibular 2nd Premolars.

C. Maxillary 1st Molars.

D. Mandibular 1st Molars.

C

Question #: 77

The length of the SX file from the ProTaper® file system is:

A. 21 mm

B. 25 mm

C. 31 mm

D. 19 mm

E. 16 mm

D

Question #: 78

When the root canal space is not in the center of the root, what should be expected:

A. A fracture.

B. An angulation error.

C. Another canal.

D. None of the above.

C

Question #: 79

Traumatic dental injuries should be evaluated using:

A. Occlusal radiographs.

B. Periapical radiographs.

C. CBCT.

D. All of the above.

D

Question #: 80

Bitewings can be helpful for identifying all EXCEPT:

A. Pulp chamber anatomy.

B. Caries.

C. Root canal anatomy.

D. Periapical status.

D

Question #: 81

Radiographs are:

A. Read.

B. Interpreted.

C. Both.

D. Neither.

B

Question #: 82

What is the probability of pulpal necrosis in Intrusive luxation?

A. 6%

B. 26%

C. 58%

D. 95%

D

Question #: 83

Splinting materials that can be used after traumatic injuries include:

A. Orthodontic wires.

B. Ribbond.

C. Nylon.

D. All of the above.

D

Question #: 84

Complications after dental trauma are all EXCEPT:

A. Necrosis.

B. Root resorption.

C. Development of Cysts.

D. Bone fractures.

C

Question #: 85

Which is the LEAST favourable treatment alternative in crown fracture?

A. Crown lengthening.

B. Surgical extrusion.

C. Extraction.

D. Orthodontic extrusion.

C

Question #: 86

What is the suggested bur angulation for initial entry in maxillary incisors?

A. 30

B. 45

C. 60

D. None

B

Question #: 87

Preoperative considerations during access cavity preparation:

A. Caries removal.

B. Remove existing restorations.

C. Remove unsupported tooth structures.

D. a and c only.

E. All of the above.

E

Question #: 88

Law of symmetry applies to all molars EXCEPT:

A. Maxillary Premolars.

B. Mandibular Premolars.

C. Maxillary Molars.

D. Mandibular Molars.

C

Question #: 89

What are the major objectives of access cavity preparation?

A. Remove all caries when present.

B. Conserve sound tooth structure.

C. Unroof the pulp chamber completely.

D. Remove all coronal pulp tissue (vital or necrotic).

E. All of the above.

E

Question #: 90

Case: A sixty-eight-year old male came in your office. He has sensitivity to cold and biting in the lower right side for few weeks, no recent dental works were performed. The pain became worse from couple of days ago. Now he has spontaneous, throbbing pain and was not able to sleep in the night. He has no allergy to food and medication. He is taking Crestor (hyperlipidemia), propranolol (non-selective beta blocker, hypertension) and Prozac (antidepressant). Radiographs and clinical findings are attached.

What would be the proper medication you suggest for this patient?

A. Analgesics- Acetaminophen 500mg, every 6-8 hours.

B. Analgesics- Ibuprofen 600mg, every 6-8 hours.

C. Antibiotics- Amoxicillin 500mg, every 8 hours.

D. Antibiotics- Azithromycin 250mg, every 24 hours.

A

Question #: 91

Case: A sixty-eight-year old male came in your office. He has sensitivity to cold and biting in the lower right side for few weeks, no recent dental works were performed. The pain became worse from couple of days ago. Now he has spontaneous, throbbing pain and was not able to sleep in the night. He has no allergy to food and medication. He is taking Crestor (hyperlipidemia), propranolol (non-selective beta blocker, hypertension) and Prozac (antidepressant). Radiographs and clinical findings are attached.

How would you confirm the proper pulpal anesthesia?

A. Perform cold test with endo ice on the tooth.

B. Presence of lip numbness.

C. Perform percussion test on the tooth.

D. Evaluate if the spontaneous pain is subsided completely.

A

Question #: 92

Case: A sixty-eight-year old male came in your office. He has sensitivity to cold and biting in the lower right side for few weeks, no recent dental works were performed. The pain became worse from couple of days ago. Now he has spontaneous, throbbing pain and was not able to sleep in the night. He has no allergy to food and medication. He is taking Crestor (hyperlipidemia), propranolol (non-selective beta blocker, hypertension) and Prozac (antidepressant). Radiographs and clinical findings are attached.

What is the proper emergency treatment you will provide that day if you have adequate time?

A. Root canal treatment – Pulpotomy.

B. Root canal treatment – Pulpectomy.

C. Incision and drainage intraorally.

D. Anesthetize the tooth to relieve the pain and schedule treatment appointment next day.

B (RCT without obturation)

Question #: 93

Case: A sixty-eight-year old male came in your office. He has sensitivity to cold and biting in the lower right side for few weeks, no recent dental works were performed. The pain became worse from couple of days ago. Now he has spontaneous, throbbing pain and was not able to sleep in the night. He has no allergy to food and medication. He is taking Crestor (hyperlipidemia), propranolol (non-selective beta blocker, hypertension) and Prozac (antidepressant). 

Radiographs and clinical findings are attached. 

What is the correct pulpal/periapical diagnosis for tooth 4.7?

A. Asymptomatic irreversible pulpitis with normal periapex.

B. Symptomatic irreversible pulpitis with normal periapex.

C. Symptomatic irreversible pulpitis with symptomatic apical periodontitis.

D. Pulp necrosis with asymptomatic apical periodontitis.

E. Pulp necrosis with symptomatic apical periodontitis.

F. Pulp necrosis with acute apical abscess.

G. Pulp necrosis with chronic apical abscess.

C

Question #: 94

Which diagnosis (pulp and periapical) scenarios are NOT endodontic emergencies? (Select all 

that apply)

A. Asymptomatic irreversible pulpitis with normal periapex.

B. Symptomatic irreversible pulpitis with normal periapex.

C. Pulp necrosis with asymptomatic apical periodontitis.

D. Pulp necrosis with symptomatic apical periodontitis.

E. Pulp necrosis with acute apical abscess.

F. Pulp necrosis with chronic apical abscess.

A, C, F (since they probably dont hurt at all tbh + there will be no swelling in F cuz its self draining)

Question #: 95

Which statement is INCORRECT regarding machine driven files? 

A. Could have variable taper.

B. Made mainly of NiTi alloy.

C. Rotate only in continuous 360 degrees.

D. More flexible compared to hand files.

C

Question #: 96

Overuse of rotary files causes:

A. Flexural Fracture.

B. Torsional Fracture.

A

Question #: 97

A red hand file could be all the following sizes EXCEPT:

A. 25

B. 55

C. 110

D. 150

D (im pretty sure its black)

Question #: 98

Glidepath could be established with Handfiles or Pathfiles.

A. True

B. False

A

Question #: 99

The taper degree of the ProTaper Gold F3 instrument at 3mm of its tip is:

A. 0.09

B. 0.08

C. 0.07

D. 0.02

A

Question #: 100

Gates Glidden drill size # 2 and 3 correspond to a K-file size:

A. 50 and 70

B. 60 and 70

C. 70 and 80

D. 70 and 90

D