E2 Flashcards

1
Q

Root trunk length for maxillary molars?

A

F 4mm
M 3mm
D 5mm

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2
Q

Root trunk length for mandibular molars?

A

F 3mm

L 4mm

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3
Q

Root trunk length for maxillary bicuspids?

A

M 7mm

D 7mm

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4
Q

What is defined as a short root trunk length?

A

1-2 mm

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5
Q

What is defined as a long root trunk length?

A

> 4mm

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6
Q

Why do premolars with furcation involvement have a very poor prognosis?

A

bc of their long root trunk length

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7
Q

What is the average root trunk length? And what teeth commonly have this length?

A

3 mm

Facial Mandibular 1st molar

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8
Q

Bifurcation ridges are present in ___% of _____ molars

A

73%

mandibular

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9
Q

From what aspect would you probe a mesial maxillary furcation?

A

from the palate

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10
Q

Glickman’s Class I Furcation Involvement

A

Incipient bone loss
Radiographically not evident

(defined as incipient bone loss in the furca opening)

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11
Q

Glickman’s Class II Furcation Involvement

A

Partial bone loss (cul-del-sac)
Depth will vary: early or advanced
Radiograph may or may not appear

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12
Q

Glickman’s Class III Furcation Involvement

A

Through-and-through bone loss (all the way through the furca to the other side)
Inter-radicular bone is completely absent
Radiographic evidence is a usual finding

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13
Q

Glickman’s Class IV Furcation Involvement

A

Through-and-through with furcation exposure due to gingival recession
Almost always shows on radiographs

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14
Q

What are the 4 root anatomy modifying factors of furcation involvement?

A

form
proximity
grooves & concavities
bifurcation ridges

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15
Q

How is the Hamp classification system for furcations different from Glickman?

A
Hamp is the same except is doesnt recognize a class IV.  
Hamp combines class III and IV so the hamp system only goes up to class III
(i.e. class I 2mm; class III is through-and-through)
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16
Q

CEP Grade I

A

Distinct changes in the CEJ that projects toward the furca

17
Q

CEP grade II

A

CEP approaching furcation

18
Q

CEP grade III

A

CEP at the roof of or into the furcation

19
Q

Noted CEPs in > __% of isolated mandibular molars with furcation involvement

A

90%

20
Q

__% associated b/w the presence of a CEP and furcation involvement

A

50%

21
Q

Where are enamel pearls most common?

A

third molars (75%)

22
Q
Percentage of molar teeth with accessory canals that exit in the roof of the furca:
\_\_% max 1st molars
\_\_% mand 1st molars
\_\_% mand 2nd molars
\_\_% max 2nd molars
A

36%
32%
24%
12%

23
Q

In non-vital teeth or those with pulpitis, accessory canals are often associated with…

A

Abscess “blow-outs” of the furcal bone

24
Q

What are the top four teeth most frequently lost?

List in order starting with most frequent

A

Max 2nd molar
Max 1st molar
Mand 2nd molar
Mand 1st molar

25
Q

Top two types of teeth LEAST frequently lost? List in order from more frequently to least

A
Maxillary cuspid (2nd least frequently lost)
Mandibular cuspid (least frequently lost tooth)
26
Q

Treatment options for increasing the width of attached gingiva?

A

1) apically positioned flap (APF)
- full thickness flap
2) free autogenous gingival graft (FGG)
3) Subepithelial connective tissue graft (CTG)

27
Q

Treatment options for obtaining root coverage?

A

1) Subepithelial connective tissue graft (CTG)
2) Semi-lunar incision + coronal positioning (Tarnow Procedure)
3) Lateral pedicle flap (LPF)

28
Q

Indications for The Free Autogenous Gingival Graft (FGG)?

A
increase width of attached gingiva
remove abnormal frenulum attachment
deepen oral vestibule
ridge augmentation procedures
cover exposed roots (*****rarely used for this purpose)
29
Q

Advantages of FGG?

A

Not technically demanding
May be accomplished with partial or full-thickness flap reflections
Wide variety of clinical applications

30
Q

Disadvantages of FGG?

A

Poor ability to provide blood supply to graft for root coverage
Esthetic results are comprised due to scarring during healing resulting in poor color match
Surgery required at two intraoral sites
Donor site may present problems with bleeding, pain, and slow healing

31
Q

Indications for The Subepithelial Connective Tissue Graft (CTG)?

A
Acquire a width of attached gingiva
Deepen oral vestibule
Remove frenulum and muscle attachment
Acquire esthetic attached gingiva (color match)
Cover exposed root surface
32
Q

Advantages of CTG?

A

High predictability
Graft received abundant blood supply
Palatal wound (donor site) can be surgically closed, thereby facilitating rapid healing with little to no discomfort or bleeding
Good color match
Applicable for recession on multiple teeth

33
Q

Disadvantages of CTG?

A

Technically demanding

Gingivoplasty may be necessary after healing to obtain better tissue contours and to decrease thickness

34
Q

Indications for Semi-lunar incision with coronal positioning (Tarnow Procedure)?

A

Maxillary anterior teeth with no more than 2mm of recession and 3-5mm of remaining keratinized gingiva
A complimentary procedure for small areas of gingival recession remaining after other procedures were used for root coverage

35
Q

Advantages of Tarnow Procedure?

A
No tension or coronal positioned flap
No narrowing of the oral vestibule
Good esthetics due to color match
Papillary height is preserved
Simple surgical procedure
Minimal post-op discomfort
Applicable to minimal gingival recession across multiple teeth
36
Q

Disadvantages of Tarnow Procedure

A

Not applicable in cases of moderate to advanced gingival recession, i.e greater than 2mm
Requires 3-5mm of thick keratinized tissue
Healing is by secondary intention and therefore some contraction occurs
May require a second procedure depending on occurrence of tissue contraction
Where osseous dehiscence or fenestration exists apical to the gingival recession area, a FGG or CTG should be performed after coronal positioning of the semi-lunar flap