30 Questions
Which material has similar bioactive properties to MTA and is used as a root canal sealer?
BC Sealer™
What is the main purpose of obturation in root canal treatment?
To fill the root canal system
Which type of sealer is absorbable when in contact with tissues and tissue fluids?
Zinc oxide eugenol-based sealers
What is the appropriate amount of sealer that should be deposited into the canal system?
An appropriate amount of sealer
Which of the following is the ultimate goal of endodontic treatment?
To retain teeth in function with pulpal or periapical pathosis
Which one of these instruments has direct clinical evidence supporting its effectiveness?
None of these instruments have direct clinical evidence
What are the two pillars of nonsurgical endodontics?
Canal preparation and obturation
What can a missed canal during canal preparation be associated with?
Endodontic failures
What is the typical recommendation for moving a rotary instrument into the canal?
Move the instrument in an in-and-out motion
When should case referral to an endodontist for microscope-supported treatment be considered?
When there are two canals in the mesiobuccal root
What is the relationship between the taper and diameter of a file and its susceptibility to fatigue failure?
Greater taper and larger diameter increase susceptibility to fatigue failure
What is the recommended way to reduce failure when using rotaries?
Apply very light pressure while advancing the instrument
Which of the following is a concern about reusing NiTi instruments?
All of the above
What is the term used to describe smaller-than-usual apical sizes in endodontics?
Minimally invasive endodontics
Which of the following is recommended before using rotary instruments in endodontics?
Using a small K-file (size #10)
What is the ideal goal of root canal obturation?
To provide a definitive coronal, lateral, and apical seal
Which of the following is NOT a benefit of using nickel-titanium (NiTi) instruments in endodontics?
High resistance to corrosion
Which of the following statements about controlled-memory (CM) nickel-titanium (NiTi) rotaries is true?
CM files are less prone to deformation and instrument fracture
Which of the following strategies is NOT recommended for canal preparation in canals with wide oval or ribbon-shaped cross-sections?
Oscillating instruments
What is the maximum number of bending cycles that nickel-titanium (NiTi) can endure without experiencing brittle fracture?
1,000 cycles
Which of the following is NOT a requirement for the gutta-percha mass in each canal during compaction?
Extend to the apical 5 mm
What materials are suitable for an orifice barrier to protect root canals from leakage?
All of the above
What is the recommended working length to prevent overextension of root filling material into the periapical tissue?
Slightly short of the tip of the root
Which of the following is NOT an undesirable outcome of root canal treatment?
Complete obturation of the root canal system
Which of the following factors has the greatest impact on the outcomes of root canal treatment?
The presence of bacterial infection
What is the potential harm of overfills during root canal treatment?
Permanent damage to the patient
Which material is typically used in combination with cement for filling root canals?
Gutta-percha
What is the role of the obturation material used in root canal treatment outcomes?
It has no impact on outcomes
Which of the following can cone-beam computed tomography study determine?
The prevalence of apical periodontitis in endodontically treated premolars and molars
Which of the following is not associated with persistent presence of bacterial infection?
Overfills
Test your knowledge on the use of tapered guttapercha cones and pluggers for effective compaction of gutta-percha in root canals. Assess your understanding of fitting the master cone, different types of pluggers, and achieving a precise fit near the apical constriction.
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