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N2 > Endo > Flashcards

Endo Flashcards

1
Q

which teeth do you perform pulp eval on?

a. tooth only
b. tooth and neighboring teeth
c. tooth, neighboring teeth, contralateral tooth
d. tooth, neighboring teeth, opposing tooth

A

c. tooth, neighboring teeth, contralateral tooth

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2
Q

fact: primary tooth got necrosis, and the inflammation went down through furcation and
affects permanent tooth. What is it gonna cause to permanent tooth? Can disturb ameloblastic
layer of permenant successor or spread infection

A

fact: primary tooth got necrosis, and the inflammation went down through furcation and
affects permanent tooth. What is it gonna cause to permanent tooth? Can disturb ameloblastic
layer of permenant successor or spread infection

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3
Q

Most common medication for pulpectomy/pulpotomy?

A

FORMOCRESOL

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4
Q

fact: calcium hydroxide is contraindicated in pulpotomy in a child because it causes
irritation leading to resorption in primary teeth

A

fact: calcium hydroxide is contraindicated in pulpotomy in a child because it causes
irritation leading to resorption in primary teeth

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5
Q

fact: Which is incorrect? Do EPT for traumatic tooth

A

fact: Which is incorrect? Do EPT for traumatic tooth

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6
Q

Least reliable test on primary teeth
• Electric pulp test
• Percussion

A

EPT

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7
Q

If you have pain, what would be the hardest to anesthetize?

a. Irreversible pulpitis and maxillary
b. Irreversible pulpitis and mandibular
c. Necrotic pulp and maxillary
d. Necrotic pulp and mandibular

A

b. Irreversible pulpitis and mandibular

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8
Q

pulpal pain that only occur at night with no stimulation

A

pulpal necrosis

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9
Q

A 7-year-old patient fractured the right central incisor three hours ago. A clinical examination reveals a 2-mm exposure of a “bleeding pulp.” The treatment-of-choice is
A. pulpectomy and apexification.
B. pulpotomy with calcium hydroxide.
C. direct pulp cap with calcium hydroxide.
D. one-appointment root canal treatment.

A

B. pulpotomy with calcium hydroxide

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10
Q

apexification vs apexogenesis

A

apexification: nonvital w/ incomplete apex
apexogenesis: vital w/ open apex

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11
Q

PEriapical lesion biopsied after apicoectomy of RCT treated tooth, tooth still sensitive tooth, with neutrophils, plasma cells, nonkeratanized stratified epithelieum (islands of), and fibrous connective tissue:
abcess? granuloma? cyst?

A

granuloma

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12
Q

Patient (6 yo), the treatment of choice for a necrotic pulp on permanent first molar would be:

  1. Apexification
  2. Apexogenesis,
  3. Root Canal Treatment
A

apexification

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13
Q

Reason for failure of replantation of avulsed tooth:
external resorption or internal
resorption?

A

external

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14
Q

Before 15 min what is success rate of avulsed tooth? ___ percent success rate.

by 30 min, success rate decreases to ___%

A

90%

50%

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15
Q

Splinting avulsed teeth – for how many days?

A

7-10 days
(mosby)

Root fracture (apical 1/3-mid): 4 wks
Root fracture (cervical): 4 months

sublux: 2 wks
avulsed: 2 wks
lateral lux: 4 wks
intrusion: 4 wks
(AAE)

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16
Q

If tooth has open apex, and it gets avulsed, how you close it? You use____

A

MTA

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17
Q

T/F: CaOH for an avulsed tooth?

A

F

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18
Q

Intrusive trauma pulp necrosis, what percent is rate of pulp necrosis? ___%

A

96

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19
Q

Primary purpose of sodium hypochlorite?

A

dissolved Organic tissue (dissolve nectrotic tissue)

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20
Q

fact: Sodium hypochlorite is used for everything except? Chelation

A

fact: Sodium hypochlorite is used for everything except? Chelation

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21
Q

which is a chelator for endo?

A

EDTA

EDTA is chelator, removes SMEAR LAYER and inorganic material

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22
Q

EDTA: **Percentage of EDTA

A

17%

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23
Q

What causes Pink Tooth Mummery?
Mummery?

Trauma? infection? internal resorption?

A

internal resorption

24
Q

when a tooth is ankylosed what type of resorption :

A

replacement resorption

25
Q

The treatment-of-choice for an external inflammatory root resorption on a non-vital tooth is which of the following?

A. Extraction
B. Surgical curettage of the affected tissue
C. Pulpectomy and obturation with gutta-percha and sealer
D. Removal of the necrotic pulp and placement of calcium hydroxide
E.Observation since it is a self-limiting process

A

D. Removal of the necrotic pulp and placement of calcium hydroxide

26
Q

when a reinplanted tooth presents external resorption what is the Tx :

a) RCT with gutta percha
b) obturation with CaOH
c) extraction

A

obturation with CaOH

27
Q

which has the best prognosis

  • perforation in extneral resorption
  • perforation in internal resorption
  • extruded gutta percha
A

• perforation in internal resorption

28
Q

least likely to result in endo failure?

overfilling with gutta percha, inadequate either obturation or cleaning and shaping, lateral root resorption, perforating
internal resorption

A

perforating

internal resorption

29
Q

cause of grey tooth

  • blood products in the dentinal tubules
  • internal resorption
  • external resorption
  • calcified canal
A

• blood products in the dentinal tubules

30
Q

Most common cell in necrotic pulp?

A

PMN

31
Q

Most common cause of RCT failure?

2nd most common cause of RCT failure?

A

1st: inadequate disinfected RC
2nd: poorly filled canals

32
Q

Incomplete removal of bacteria, pulp debris, and dentinal shavings is commonly caused
by failure to irrigate thoroughly. Another reason is failure to:

A. use broaches.
B. use a chelating agent.
C. obtain a straight line access.
D. use Gates-Glidden burs.

A

C. Obtain a straight line access

33
Q

least likely cause for failed RCT

a. GP beyond apex
b. clean & shaping no good
c. obturation no good

A

a. GP beyond apex-

causes of failure 1) insufficient canal debridement 2) insufficient
obuturation/leakage.

34
Q

fact: Gutta percha, all except – adapts to tooth (needs sealer)

A

fact: Gutta percha, all except – adapts to tooth (needs sealer)

35
Q

Vertical root fractures are also called cracked teeth. The prognosis of cracked teeth varies
with extent and depth of crack

TT
FF
TF
FT

A

FT

36
Q

most common tooth associated w/ cracked tooth syndrome

A

Mandibular second molars,

followed by mandibular first molars and maxillary premolars

37
Q

endo access design mandibular molar is

A

Trapz

38
Q

why do you do triangular access on incisors (max central inccisor?)

a. to help with straight line access
b. help expose pulp horn
c. to follow the shape of the crown

A

help expose pulp horn

39
Q

How do you differentiate between an endo/perio lesion?

A

ept

40
Q

What is untrue about EPT?

It is more reliable than cold testing for necrotic teeth
It gives relative health status of pulp
Tells if there are vital nerve fibers

A

It is more reliable than cold testing for necrotic teeth

41
Q

lateral periodontal abscess is best differentiated from the acute apical abscess by?
a-pulp testing
b.radiographic appearance
c.probing patterns

A

a-pulp testing

42
Q

What is test to diagnose acute periradicular periodontitis

A

sensitive to percussion

43
Q

radiographically the acute apical abscess

a. is generally of larger size than other lesions
b. may not be evident
c. has more diffuse margins than other lesion

A

b.may not be evident

44
Q

How do u test a tooth to differentiate between chronic perio and supperative perio?

a. cold test
b. percussion
c. EPT

A

b. percussion

45
Q

Which of the following conditions indicates that a periodontal, rather than an
endodontic problem, exists?
A. Acute pain to percussion with no swelling
B. Pain to lateral percussion with a wide sulcular pocket
C. A deep narrow sulcular pocket to the apex with exudate
D. Pain to palpation of the buccal mucosa near the tooth ape

A

B. Pain to lateral percussion with a wide sulcular pocket

46
Q

What treatment is required with tooth with draining sinus tract has been treated via RCT:

A

􀃆no further treatment

47
Q

when do you puncture? An abcess.
Localized chronic fluctuant in palpation.
Localized chronic hard in palpation

A

Localized chronic fluctuant in palpation.

48
Q 
patient has a non vital tooth and a fistula is draining around gingival sulcus. What to do
endo and perio at same time
perio and then endo
only endo
only perio
A

endo only

49
Q

There usually is no lesion apparent radiographically in acute apical periodontitis. However,
histologically bone destruction has been noted.
a. Both statements are true
b. Both statements are false.
c. First statement is true, second is false.
d. First statement is false, second is true.

A

TT

50
Q

A periradicular radiolucent lesion of endodontic origin on the radiograph may be any of these
histological diagnoses except one. Mark this exception.
a. A cyst
b. A granuloma
c. An Abscess
d. Dentigerous cyst

A

d. Dentigerous cyst

51
Q

What complete endodontic diagnosis could be completely asymptomatic but should require
endodontic therapy?
a. Pulpal necrosis and acute periradicular periodontitis
b. Normal pulp and acute periradicular periodontitis.
c. Pulpal necrosis and chronic periradicular periodontitis.
d. Normal pulp and normal periapex

A

c. Pulpal necrosis and chronic periradicular periodontitis.

52
Q

First thing do with periapical abscess?

A

Incise and drain,

Use gutta percha to find it

53
Q

What will not regenerate after RCT

A

dentin

54
Q

maxillary central incisor of an adult patient is traumatized in an accident. The tooth is
slightly tender to percussion, is in good alignment, and responds normally to pulp vitality tests.
Radiographic examination shows a horizontal fracture of the apical third of the root. The best treatment is
which of the following?
A. Root canal treatment
B. Splint and re-evaluate the tooth for pulpal vitality at a later time
C. Apexification

A

B. Splint and re-evaluate the tooth for pulpal vitality at a later time

55
Q

Fracture at apical 1/3, how long do you splint?

A

6-12 wks

Root fracture (apical 1/3-mid): 4 wks
Root fracture (cervical): 4 months

sublux: 2 wks
avulsed: 2 wks
lateral lux: 4 wks
intrusion: 4 wks
(AAE)

56
Q

urodontism has enlarged pulp chamber in which direction?

apical,
occlusal
apical AND occlusal

A

apical

N2 (14 decks)

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