Deck 54: Endodontics

Question 1

Which tissues surround the root of the tooth?

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

Answer 1

Periradicular

Question 2

Which of the following steps in root canal therapy takes place first?

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

Answer 2

Access preparation

Question 3

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

Answer 3

Endodontist

Question 4

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

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

Question 5

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.

Question 6

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 7

Pulpal nerve damage can occur from:

A)physical irritation.
B)trauma.
C)poor nutritional habits.
D)both a and b.

Question 8

When the pulp displays symptoms of lingering pain and the clinical diagnostic findings show that the pulp is incapable of healing,_____ treatment option(s).

A)irreversible pulpitis is a
B)root canal therapy is a
C)an extraction is a
D)both b and c are

Question 9

The process used to remove bacteria,necrotic tissue,and organic debris from the root canal is called:

A)obturation.
B)opening the canal.
C)debridement.
D)shaping.

Question 10

Which vitality test is the least useful?

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

Question 11

Which of the following hand files 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 12

The natural rubber material used to obturate the pulpal canal after treatment is completed is called:

A)gutta-percha.
B)hydrogen peroxide.
C)glass ionomer.
D)both b and c.

Question 13

The most common symptom of pulpal damage is:

A)sharp pain when occluding.
B)ecchymosis.
C)petechiae.
D)leukoplakia.

Question 14

Common signs and symptoms of pulpal nerve damage include:

A)pain during chewing.
B)sensitivity to hot and cold foods.
C)facial swelling.
D)all of the above.

Question 15

Symptoms that are described by the patient are considered to be:

A)objective.
B)acute.
C)chronic.
D)subjective.

Question 16

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 17

When conducting an objective examination,the dentist must take into consideration:

A)tooth mobility.
B)presence or extent of decay.
C)swelling or discolorations.
D)all of the above.

Question 18

Which statement is NOT true 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.

Question 19

The treatment that is used to attempt to save the pulp,and encourage the formation of dentin at the site of the injury is:

A)a pulpotomy.
B)pulp capping.
C)a pulpectomy.
D)an apicoectomy.

Question 20

A localized area of pus is a(n):

A)abscess.
B)perforation.
C)pulpitis.
D)pulp fibrosis.

Question 21

The instrument used to remove coronal pulp tissue and decay from a tooth is the:

A)explorer.
B)spoon excavator.
C)Glick Number 1.
D)K-type file.

Question 22

Once the root canal therapy is completed,the canal is filled with:

A)paper points.
B)gutta-percha.
C)calcium hydroxide.
D)parachlorophenol.

Question 23

Endodontic failure may be caused by:

A)severely curved roots.
B)perforation of the canal.
C)accessory canal not being treated.
D)all of the above.

Question 24

A periradicular abscess is an inflammatory reaction to pulpal infection.If the patient is experiencing pain,tenderness to tooth pressure,pus formation,and swelling,this is considered to be:

A)acute.
B)chronic.
C)reversible pulpitis.
D)obturation.

Question 25

The radiograph that helps the dentist determine the length of the canal taken during the endodontic procedure is the:

A)initial radiograph.
B)working length image.
C)final instrumentation film.
D)root canal completing film.

Question 26

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 27

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 28

The procedure where the root and part of the tooth are removed is a(n):

A)apicoectomy.
B)apical curettage.
C)root amputation.
D)hemisection.

Question 29

Which statement is not true 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 30

Pulp fibrosis:

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

Question 31

What is used to absorb solutions and dry the canal?

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

Question 32

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 post-treatment evaluations.

Question 33

Which of the following statements is true regarding pulp capping?

A)Some of the carious dentin is left in the tooth to promote self-healing of the dentin so 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 of the decay and to stimulate the production of reparative dentin through placement of calcium hydroxide.

Question 34

The term root canal therapy is a(n):

A)apicoectomy.
B)hemisection.
C)pulpectomy.
D)pulpotomy.

Question 35

The purposes of irrigation solutions in root canal therapy include:

A)providing tissue dissolution.
B)providing bleeding control.
C)deodorizing the canal.
D)all of the above.

Question 36

The procedure most commonly used for vital primary teeth is:

A)indirect pulp capping.
B)direct pulp capping.
C)pulpectomy.
D)pulpotomy.

Question 37

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 38

The electric pulp tester is:

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