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Endo Final > Perio-Endo and Cracks > Flashcards

Perio-Endo and Cracks Flashcards

1
Q

Main pathway of communication from the pulp to the periodontium.

A

Apical foramen

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2
Q

These are more common in the posterior teeth than anterior, and apical than coronal.

A

Lateral canals.

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3
Q

t/f:

Periodontitis adjacent to a lateral canal does NOT induce pulpitis.

A

True

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4
Q

Size and number of these decrease as you go in an apical direction.

A

Dentinal tubules

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5
Q

Acts as a barrier between pulp and periodontium

A

Cementum

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6
Q

t/f:

Most studies show that periodontitis has little to no effect on the pulp.

A

True

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7
Q

Periodontal DISEASE does not affect the pulp, but periodontal _______ can cause pulpitis/necrosis.

A

TREATMENT

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8
Q
  • Necrotic
  • Sinus tract drains thru the sulcus.
  • NARROW pocket
A

1 endo lesion

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9
Q
  • Vital pulp

- Wide pocket on probin

A

1 perio lesion

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10
Q
  • Necrotic pulp
  • Sinus tract drains through the sulcus.
  • Plaque and calculus present.
  • -Results in a wider pocket.
A

1 endo + 2 perio

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11
Q
  • Vital or necrotic pulp
  • Perio pocket extends to the lateral canal or foramen
  • Results in pulpitits (retrograde) and eventually necrosis
  • prognosis depends on perio tx.
A

1 perio + 2 endo

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12
Q

Prognosis for 1 perio + 2 endo depends on what tx?

A

Perio

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13
Q
  • Separate endo and perio lesions meet.
  • Extensive bony destruction.
  • Wide defects.
  • Prognosis depends on perio tx.
A

True combined lesion

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14
Q
  • Separate endo and perio lesions that do NOT meet.
  • Don’t influence each other.
  • Both diseases must be treated separately.
  • Prognosis depends on perio tx.
A

Concomitant perio-endo lesions.

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15
Q

What does the prognosis of the tooth depend on when moderate to severe periodontitis exists?

A

Perio treatment

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16
Q

Occur in a vertical direction AND over time.

A

Longitudinal tooth fractures.

17
Q

Longitudinal fractures confined to the enamel

Seen in the B and L marginal ridge of posterior teeth, and the cervical to incisal edge of anterior teeth.

A

Craze lines

18
Q
  • Occurs from loss of cusp support (large restorations or extensive caries)
  • Crack lines cross the marginal ridge and extend down the buccal or lingual.
A

Cusp fracture

19
Q
  • Oblique shearing fracture at the line angle at the base of the cavity.
  • Pain on release.
  • Usually don’t involve the pulp

Tx: Remove fractured cusp and restore.

A

Cusp fracture

20
Q

Incomplete (greenstick) fracture initiated from the crown and extends apically

  • Usually mesio-distally.
  • Can propogate down the root surface..
A

Cracked tooth

21
Q

Most common teeth involved in cracked tooth:

A

Mand 2nd molar > Mand 1st molar > Max Pm’s = Max molars

22
Q
  • Acute pain on mastication.
  • Brief pain to cold.

Signs and symptoms are variable, so we don’t use this term anymore.

A

Cracked tooth syndrome

23
Q

t/f:

Poorer prognosis if the crack extends through or beyond the pulp chamber floor or if there’s deep probing.

A

True

24
Q
  • Evolution of a crack
  • A complete fracture
  • Separate segments
  • Usually involves the pulp
A

Split tooth

25
Q

What do you do if the split reaches the apical 1/3 of the tooth?

A

Exo!

26
Q

What to do if the split reaches the middle or coronal 1/3?

A

Remove smaller segment and salvage the larger one

27
Q
  • Occur in the BL direction
  • Result from wedging forces within the canal
  • Beings internally and grows outward
  • Propagates apical to coronal.
A

Vertical root fracture

28
Q

Two major causes of vertical root fracture.

A

1) Post placement

2) Condensation during root canal filling

29
Q

Rarely in non-endodontically treated teeth, but seen in Chinese population.

A

Vertical root fracture.

30
Q

Avoid these posts to prevent vertical root fracture.

A

Active and cast

31
Q

What percent of VRF’s are not prebeble?

A

60

32
Q

Radiographic appearance of vertical root fractures.

A

J-shaped RL

33
Q

Bone loss pattern associated with vertical root fractures.

A

Dehiscence or Fenestration

34
Q

A narrow, vertical defect in the alveolar plate of bone over a root extending from the crestal area apically.

A

Dehiscence

35
Q

A window-like opening in the alveolar plate of bone frequently exposing a portion of the root.

A

Fenestration

Endo Final (6 decks)

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