Deck 54: Endodontics

Question 1

Which statement is incorrect concerning the specialty of endodontics?

A)Endodontic treatment is often referred to as root canal therapy.
B)A general dentist is qualified to perform endodontic treatment.
C)The American Dental Association recognized endodontics as a specialty in dentistry in 1953.
D)Endodontics manages the prevention of diseases of the dental pulp.

Answer 1

The American Dental Association recognized endodontics as a specialty in dentistry in 1953.

Question 2

Which vitality test is the least useful?

A)Heat
B)Cold
C)Percussion
D)Electronic pulp

Answer 2

Heat

Question 3

When the pulp displays symptoms of lingering pain and the clinical diagnostic findings show that the pulp is incapable of healing,what treatment is warranted?

A)Indirect pulp therapy
B)Root canal therapy
C)Extraction
D)Both b and c

Answer 3

Both b and c

Question 4

What class of symptoms is described by the patient?

A)Objective
B)Acute
C)Chronic
D)Subjective

Question 5

If a tooth has a necrotic pulp,it will not respond to:

A)heat and cold stimulus.
B)percussion and palpation.
C)nonvital and vital stimulus.
D)reversible and irreversible stimulus.

Question 6

The two types of tests that the dentist uses to determine whether the inflammatory process has gone into the periapical tissues are ____ and ____.

A)objective; subjective
B)palpation; percussion
C)chronic; acute
D)reversible; irreversible

Question 7

When conducting an objective examination,the dentist will not take into consideration which observation?

A)Tooth mobility
B)Presence or extent of decay
C)Swelling or discolorations
D)Patients' pain report

Question 8

Thermal sensitivity tests:

A)include testing for sensitivity to heat and cold.
B)can be used on metallic restorations.
C)include testing for cold sensitivity with dry ice.
D)Both a and c are correct.

Question 9

Which dentist specializes in the prevention,diagnosis,and treatment of the dental pulp and the tissues that surround the root of the tooth?

A)Periodontist
B)Endodontist
C)Oral surgeon
D)Prosthodontist

Question 10

Which process is used to remove bacteria,necrotic tissue,and organic debris from the root canal?

A)Obturation
B)Opening the canal
C)Debridement
D)Shaping

Question 11

What is the name for a localized area of pus?

A)Abscess
B)Perforation
C)Pulpitis
D)Pulp fibrosis

Question 12

What type of response to the percussion or palpation test would indicate that the inflammation is present in the periodontal ligament and that endodontic treatment is most likely needed?

A)Negative
B)Positive
C)Acute
D)Obturation

Question 13

Which sign or symptom is uncommon for pulpitis?

A)Pain during chewing
B)Sensitivity to hot and cold foods
C)Facial swelling
D)Fever

Question 14

Which style of hand file has its spiral edges arranged so that cutting occurs only on the pulling stroke,making the dentinal walls smooth and easier to fill?

A)Broach
B)K-type
C)Hedstrom
D)Reamer

Question 15

Which tissues surround the root of the tooth?

A)Periradicular
B)Periapical
C)Gingival
D)Root canal

Question 16

What is the natural rubber material used to obturate the pulpal canal after treatment is completed?

A)Gutta-percha
B)Hydrogen peroxide
C)Glass ionomer
D)Both b and c

Question 17

What treatment is used to attempt to save the pulp,and encourage the formation of dentin at the site of the injury?

A)Pulpotomy
B)Pulp capping
C)Pulpectomy
D)Apicoectomy

Question 18

What is the most common symptom of pulpal damage?

A)Sharp pain when occluding
B)Ecchymosis
C)Petechiae
D)Leukoplakia

Question 19

Which factors can cause pulpal nerve damage?

A)Physical irritation
B)Trauma
C)Poor nutritional habits
D)Both a and b

Question 20

Which step in root canal therapy takes place first?

A)Estimated working length
B)Access preparation
C)Debridement and shaping the canal
D)Obturation

Question 21

What is the role of radiographs in endodontics?

A)Radiographs are used for diagnosis only.
B)Radiographs are used only during treatment to determine file length.
C)Radiographs are used for diagnosis and during treatment to determine file length.
D)Radiographs are used for diagnosis, during treatment to determine file length, and at posttreatment evaluations.

Question 22

Which statement typifies the vitalometer (electric pulp tester)?

A)It is the most reliable means of testing for pulp vitality.
B)It is not affected by the size of the restorations on a tooth.
C)It is battery operated, which can weaken over time and give a false reading.
D)It is able to determine whether one canal is vital and other nonvital.

Question 23

Which procedure is most commonly used for vital primary teeth?

A)Indirect pulp capping
B)Direct pulp capping
C)Pulpectomy
D)Pulpotomy

Question 24

What would not cause endodontic failure?

A)Severely curved roots
B)Perforation of the canal
C)Accessory canal not being treated
D)Recurrent caries

Question 25

What is pulp fibrosis?

A)It develops as a result of necrosis of the pulp.
B)It is seen in patients with a traumatic injury to the tooth.
C)It has a draining tract where pus is intermittently discharged.
D)It has symptoms of sudden onset of pain, swelling, and pus formation.

Question 26

Which instrument is used to remove dentin and to smooth and increase the size of the canal?

A)Hedstrom file
B)Reamer file
C)Broach
D)Pesso file

Question 27

What is the purpose of irrigation solutions in root canal therapy?

A)Tissue dissolution
B)Bleeding control
C)Deodorizing the canal
D)All of the above

Question 28

Which radiograph image helps the dentist determine the length of the canal?

A)Initial radiograph
B)Working length
C)Final instrumentation
D)Final fill

Question 29

What instrument is used to remove coronal pulp tissue and decay from a tooth?

A)Barbed broach
B)Spoon excavator
C)Glick Number 1
D)K-type file

Question 30

What is the order of use for the following instruments?
1)Files
2)Endodontic explorer
3)Gutta-percha
4)Paper points
5)Glick Number 1

A)1, 2, 3, 4, and 5
B)2, 3, 4, 5, and 1
C)2, 1, 4, 3, and 5
D)5, 1, 3, 2, and 4

Question 31

Which term most accurately identifies root canal therapy?

A)Apicoectomy
B)Hemisection
C)Pulpectomy
D)Pulpotomy

Question 32

Which statement is incorrect concerning hand-operated files?

A)Hand-operated files are used for cleaning and shaping the pulpal canals.
B)Each file is color-coded according to the flexibility of the file.
C)Files are available in stainless steel or nickel-titanium (Ni-Ti).
D)Each file is designed for a specific function once placed in the tooth.

Question 33

What type of abscess would be present if the patient is experiencing pain,tenderness to tooth pressure,pus formation,and swelling?

A)Acute
B)Chronic
C)Reversible
D)Irreversible

Question 34

Once the root canal therapy is completed,what is used to fill the canal?

A)Paper points
B)Gutta-percha
C)Calcium hydroxide
D)Parachlorophenol

Question 35

Which of the following statements is correct regarding pulp capping?

A)Some of the carious dentin is left in the tooth to promote self-healing of the dentin so that pulp exposure can be avoided.
B)With direct pulp capping, the tooth is nonvital and material is placed to protect the pulp.
C)Indirect pulp capping is a permanent procedure, but the patient needs to be informed because problems may develop later and periodic monitoring is necessary.
D)The goals of indirect pulp capping are to promote pulpal healing by removing all the decay and to stimulate the production of reparative dentin through placement of calcium hydroxide.

Question 36

When the tooth pulp is irritated and the patient experiences pain to thermal stimuli,a diagnosis of ______ can be made.

A)periradicular cyst
B)reversible pulpitis
C)irreversible pulpitis
D)periodontal abscess

Question 37

Which of the following is used to absorb solutions and dry the canal?

A)Gutta-percha
B)Rubber stops
C)Paper points
D)Broaches

Question 38

Which procedure removes a root from a multi-rooted tooth?

A)Apicoectomy
B)Apical curettage
C)Root amputation
D)Hemisection