1. Of the following, the least important determinant of root canal treatment success is which of the following?
a. Proper placed restoration after root canal treatment b. Healthy periodontium
c. Three-dimensional (3-D) obturation of the root canal system
2. Paraformaldehyde-containing obturating materials result in which of the following?
a. Eliminate bacteria that remains in the canals b. Mummify tissue remnants in the canals
c. Reduce posttreatment pain
d. Are below the standard of care for root canal treatment
3. It is preferable to not extrude sealer beyond the apex for which of the following reasons?
a. The sealer usually does not resorb.
b. The sealer often stains or tattoos the tissue.
c. The sealer is a tissue irritant and may delay healing. d. The sealer promotes bacterial growth.
4. Gutta-percha in contact with connective tissue is which of the following? a. Relatively inert
b. Immunogenic c. unstable d. Carcinogenic
5. The primary reason to use a sealer and cement is which of the following? a. Attainment of an impervious seal
b. Canal disinfection
c. Lubrication of the master cone d. Adhesion to dentin
e. All of the above
6. Considering lateral versus vertical condensation, studies have shown which of the following?
a. Lateral condensation results in a better seal. b. Vertical condensation results in a better seal. c. Both consistently fill lateral canals.
d. Sealability with either largely depends on the shape of the prepared canal. 7. A problem with nickel-and-titanium (NiTi) spreaders is which of the following?
a. Tendency to buckle under compaction pressure b. Tendency to break during condensation
c. Creation of greater wedging forces, leading to root fracture
d. They do not penetrate as deeply as stainless steel (SS) spreaders under equal force 8. Moderate extrusion of obturating materials beyond the apex is undesirable
because of which of the following?
a. There is more likelihood of postoperative discomfort.
b. Sealer and gutta-percha cause a severe, inflammatory reaction in periradicular tissue.
c. The prognosis is poorer. d. All of the above
9. In which of the following is one-visit root canal treatment not recommended? a. The pulp is necrotic and not symptomatic.
b. The pulp is necrotic and symptomatic.
c. The pulp is necrotic and there is a draining sinus tract. d. The pulp is vital and symptomatic.
10. When is an application of heater-injected gutta-percha potentially beneficial? a. When there is an open apex
b. When there are aberrations or irregularities of the canal c. When the clinician cannot master lateral condensation d. When the canals are curved and small after preparation
a. It can only be achieved with lateral condensation.
b. It depends on placing the compacting instrument close to the apical terminus. c. It can be achieved in small, nontapering canal preparations.
12. Which of the following statements accurately describe the continuous-wave technique?
a. It uses a heat carrier that can both compact and heat gutta-percha. b. It is superior to other warm-compaction techniques.
c. It has been shown to provide a better prognosis than cold-compaction techniques. d. It has been shown to have no adverse effects on the periodontium.
13. An advantage of the continuous-wave technique over warm, vertical compaction is which of the following?
a. The continuous-wave technique is faster.
b. The continuous-wave technique adapts better to canal irregularities. c. The continuous-wave technique is not technique sensitive.
d. No special devices are necessary.
14. The most likely cause of a gross overfill is which of the following? a. Lack of an apical seat or stop
b. Use of excessive amounts of sealer
c. Use of excessive apical pressure on the spreader d. Use of a master cone that is too small
15. The obturation of the incisor shown in the following illustration is inadequate because of which of the following?
a. It appears short of the prepared length.
b. There is variable radiodensity (i.e., incomplete condensation) throughout its length.
d. The diagnosis was pulp necrosis and chronic apical periodontitis; the canal should be filled to the apical foramen.
16. The dark tooth in the following illustration has a history of trauma and root canal treatment. It is likely that the discoloration is primarily caused by which of the following?
a. Remnants of necrotic tissue b. A leaking restoration
c. Blood pigments in the dentinal tubules
d. Obturating materials not removed from the chamber
17. Of the following, what is the most likely cause of failure of root canal treatment on the lateral incisor in the illustration?
a. The silver point corrodes.
b. The canal is filled too close to the apex. c. There is coronal leakage.
d. The silver point does not adapt to the prepared space.
CHAPTER 10:
RECORDS AND LEGAL RESPONSIBILITIES
1. Concerning making changes in a patient record, which of the following statements is accurate?
a. Any changes are forbidden.
b. Deletions are permitted if erased completely as soon as they occur. c. Corrections are permitted, if dated.
2. Standard of care, as defined by the courts, is which of the following? a. Requires absolute perfection
b. Describes what any careful-and-prudent clinician would do under similar circumstances
c. Does not allow for individual variations of treatment d. Is equivalent to customary practice
3. The doctrine of informed consent does not require which of the following? a. Patients to be advised of reasonably foreseeable risks of treatment
b. Patients to be advised of reasonable alternatives
c. Patients forfeit their right to do as they see fit with their body. d. Patients be advised of the consequences of nontreatment.
4. Which of the following statements accurately describe a periodontal examination of a patient referred for endodontic treatment?
a. It should performed on the entire dentition.
b. It must be performed at least on the tooth to be treated.
c. It is necessary only if there is evidence of periodontal disease. d. It is necessary only if requested by the referring dentist. 5. A dentist may legally do which of the following?
a. Refuse to treat a new patient, despite severe pain and infection
b. Be bound to see a former patient on recall after treatment is completed c. Discharge a patient from the practice at any time
d. Refuse to treat a patient who has an outstanding account balance
6. If a patient with human immunodeficiency virus (HIV) requests that the dentist not inform the staff of the condition, the dentist should do which of the following?
a. Refuse to treat the patient
b. Tell the staff in private, and then treat the patient with extra precautions c. Not tell the staff but treat the patient with great caution
d. Not tell the staff and require the patient to assume liability should anyone contract the virus
7. A specialist may be held liable if which of the following occurs?
a. Informs the patient that the general practitioner performed substandard care b. Fails to disclose to the patient or referring dentist evident pathosis on teeth other than those the specialist is treating
c. Fails to locate a small canal that is not evident radiographically
d. Mistakenly initiates treatment on the wrong tooth in a difficult diagnostic situation
8. Of the following, which is the best way for clinicians to avoid legal actions by patients?
a. Tell patients they have no malpractice insurance.
b. Attend continuing education courses to remain informed of current techniques. c. Refer all major patient complaints to peer review.
d. Demonstrate genuine interest in the welfare of the patient.
9. Computerized treatment records may not be signed electronically. a. True
b. False
a. True b. False
11. Standard of care for routine endodontics is set by which of the following? a. The state's dental licensing agency
b. Endodontists
c. The community of general dentists
12. A patient continues to have pain after a dentist uses the technique of
Paraformaldehyde paste pulpotomy on a tooth with a necrotic pulp and apical pathosis and then places a crown. In this situation, which of the following statements is true?
a. The dentist is liable for malpractice because unacceptable treatment procedures were followed.
b. The dentist is not liable if the patient is now referred to the appropriate specialist who can treat the case.
c. The dentist is not liable if the dentist performs additional treatment for no fee.