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Periodontics > Exam 2 - Furcas > Flashcards

Exam 2 - Furcas Flashcards

1
Q

The following probes measure what type of depth respectively?

  1. Periodontal Probe
  2. Nabers Furcation Probe
A
  1. Vertical Depth

2. Horizontal depth

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2
Q

4 main categories of modifying factors of furcation involvement

A
  1. Anatomic
  2. Supervised Neglect
  3. Difficult Cleansibility
  4. Restorations
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3
Q

Name 5 anatomic modifying factors of furcation involvement

A
  1. Cervical Enamel Projections
  2. Enamel Pearls
  3. Accessory Canals
  4. Root Anatomy
  5. Root trunk length
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4
Q

Maxillary Molar furcation depth on Facial, Mesial, Distal & LIngual

A

Facial: 4 mm
Mesial: 3 mm
Distal: 5 mm
Lingual: none

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5
Q

Maxillary Bicuspid furcation depth on Facial, Mesial, Distal & Lingual?

A

Facial: None
Mesial: 7 mm
Distal: 7 mm
Lingual: none

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6
Q

Mandibular Molar furcation depth on Facial, Mesial, Distal & Lingual?

A

Facial: 3 mm
Mesial: none
Distal: none
Lingual: 4 mm

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7
Q

What is the measurements to a short, average and long root trunk?

A 
Short = 1-2 mm
Average = 3 mm
Long = > 4 mm
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8
Q

Which teeth with furcation involvement have a very poor prognosis because of the root trunk length?

A

Premolars

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9
Q

Bifurcation ridges are present in what percentage of mandibular molars?

A

73%

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10
Q

To get into the mesial furcation of a maxillary molar, what is the proper direction of entry to place the probe?

A

To get into the medial, you need to enter from the palatal side of the tooth.

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11
Q

2 characteristics of Glickman’s class I furcation involvement

A
  1. Incipient bone loss in the furca opening

2. Radiographically not evident

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12
Q

3 characteristics of Glickman’s class II furcation involvement

A
  1. Partial bone loss (cul-del-sac)
  2. Depth will vary: early or advanced
  3. Radiograph may or may not appear
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13
Q

Which class of furcation is defined as partial bone loss?

A

Class II

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14
Q

3 characteristics of Glickman’s Class III Furcation Involvement?

A
  1. Through-and-through
  2. Inter-radicular bone is completely absent
  3. Radiographic evidence is a usual finding
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15
Q

Which class of furcation is defined as total bone loss with a through-and-through opening of the fulcra?

A

Class III

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16
Q

2 characteristics of Glickman’s Class IV Furcation involvement

A
  1. Through-and-through with furcation exposure

2. Almost always shows on radiographs

17
Q

What is the difference between a Class III and Class IV furcation?

A

Class IV furcation involvement is the same as a Class III except the furcation is exposed due to gingival recession

18
Q

Difference between Glickman’s classification system and the Hamp system?

A

Hamp system Class III and IV are combined. It does not recognize a class IV

19
Q

Describe the average percentage of molars and their measurements that have a furcation involvement smaller than the standard curette?

A

58%

20
Q

Explain the 3 grades of cervical enamel proections

A

Grade I: Distinct change in the CEJ that projects toward the furca
Grade II: CEP approaching the furcation
Grade III: CEP at the roof of or into the furcation

21
Q

What percentage of mandibular molars have CEPs?

A

28.6% of mandibular molars

22
Q

What percentage of Maxillary molars have CEPs?

A

17% of maxillary molars

23
Q

There were noted CEPs in what percentage of isolated mandibular molars with furcation involvement?

A

> 90%

24
Q

What percentage of the time are enamel pearls found on permanent molars?

A

1.1% to 5.7% of permanent molars

25
Q

What percentage of Third molars generally have enamel pearls?

A

75%

26
Q

Percentage of molar teeth with accessory canals that exit in the roof of the furca:

  • Maxillary 1st molar
  • Mandibular 1st molar
  • Mandibular 2nd molar
  • Maxillary 2nd molars
A
  1. Max 1st molar: 36%
  2. Man 1st molar: 32%
  3. Man 2nd molar: 24%
  4. Max 2nd molar: 12%
27
Q

In non-vital teeth or those with pulpits, accessory canals are often associated with what?

A

Abscess “blow-outs” of the furcal bone

28
Q

Loss of individual teeth in order of frequency? 1st half

A 
Maxillary 2nd molar
Maxillary 1st molar
Mandibular 2nd molar
Mandibular 1st molar
Maxillary 2nd bicuspid
Mandibular CI
Maxillary 1st bicuspid
Mandibular 2nd bicuspid
Maxillary CI
29
Q

Loss of individual teeth in order of frequency? 2nd half

A 
Maxillary LI
Mandibular 1st bicuspid
Mandibular LI
Maxillary cuspid
Mandibular cuspid

Periodontics (10 decks)

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