SG

Question 1

Primary cause of perio ds is

Answer 1

Plaque not calculus

Question 2

Perio ds is bacterial plaque in a

Answer 2

susceptible host

Question 3

Dental plaque is

Answer 3

Structurally and functionally organized, species rich, microbial biofilms that form on teeth

Question 4

Calculus

Answer 4

mineralized plaque that forms hard deposits

Question 5

Materia alba

Answer 5

soft accumulation of salivary proteins, bacteria, desquamated epithelial cells and food debris

Question 6

Predominant cells of early lesion

Answer 6

PMNs, macrophages, T-lymphocytes

Question 7

Predominant cells of established lesions

Answer 7

PNMs, macrophages, T-lymphocytes, B-lymphocytes, plasma cells

Question 8

Stage 1

Answer 8

1-2mm CAL, <15% BL, no tooth loss, probing depth=4mm or less, mostly horizontal BL

Question 9

Stage 2

Answer 9

3-4mm CAL, 15-33% BL, no tooth loss, probing depths=5mm or less, mostly horizontal BL

Question 10

Stage 3

Answer 10

5mm or more CAL, BL >33%, 4 or less teeth, probing depths of 6mm or more, vertical BL 3mm more more, Class 3-4 furcation, moderate ridge defects

Question 11

Stage 4

Answer 11

5mm or more CAL, BL >33%, 4 or less teeth, probing depths of 6mm or more, vertical BL 3mm more more, Class 3-4 furcation, severe ridge defects, secondary occlusal trauma, bite collapse, pathological migration of teeth, <20 remaining teeth (10 opposing pairs)

Question 12

Grade A

Answer 12

Slow rate = nonsmoker and nondiabetic

Question 13

Grade B

Answer 13

Moderate rate, <10 cig/day, diabetic with HbA1c <7

Question 14

Grade C

Answer 14

Rapid rate, >10cig/day, diabetic HbA1c >7%

Question 15

Mobility

Answer 15

Use 2 rigid instruments, not fingers. (may show thickened PDL, clenched/bruxism, missing tilted teeth, evidence of working/balancing occlusal interferences

Question 16

Mobility Grade 1

Answer 16

First distinguishable sign of movement more than normal (physiologic)

Question 17

Mobility Grade 2

Answer 17

Movement which allows crown to move 1 mm from its normal position in any direction

Question 18

Mobility Grade 3

Answer 18

Tooth may be rotated or depressed in alveoli

Question 19

Furca: Glickman Grade 1

Answer 19

Pocket formation into the flute of the fucra, but the inter-radicular bone is intact

Question 20

Furca: Glickman Grade 2

Answer 20

Loss of inter-radicular bone with pocket formation of varying depths into the furca, but not completely through to the other side (can be shallow or deep)

Question 21

Furca: Glickman Grade 3

Answer 21

Complete loss of inter-radicular bone with pocket formation completely probable to the other side B/L

Question 22

Furca: Glickman Grade 4

Answer 22

Loss of attachment and gingival recession that has made the furcation clearly visible

Question 23

Hamp

Answer 23

Classification of horizontal component of the furca involvement.

Question 24

Hamp Degree 1

Answer 24

<3mm

Question 25

Hamp Degree 2

Answer 25

>3mm but not the total width of furca area

Question 26

Hamp Degree 3

Answer 26

Through and through

Question 27

Tarnow

Answer 27

Classification of the vertical component

Question 28

Tarnow Class A

Answer 28

Up to 1/3 of furca (1-3mm)

Question 29

Tarnow Class B

Answer 29

Up to 2/3 of the furca (4-6mm)

Question 30

Tarnow Class C

Answer 30

Into apical third (>7mm)

Question 31

Components of biological width

Answer 31

1 mm of Junctional Epithelium and 1mm of Connective tissue

Question 32

Stippling

Answer 32

A form of adaptive specialization or reinforcement of function. Indicates health, pt may not have stippling and still be health

Question 33

Bundle Bone

Answer 33

Attachment for PDL fibers into the bone (Lamina Dura is just a radiographic term for it)

Question 34

Cortical/cancellous bone

Answer 34

Spongy bone btw teeth

Question 35

Rests of Malassez

Answer 35

Remnants of Hertwigs tooth sheath (cells form in the cervical part of the enamel organ, can persist and embed in the PDL)

Question 36

Cervical Enamel Projections

Answer 36

Enamel extending into the furcation

Question 37

CEP Stage 1:

Answer 37

Extends from the CEJ toward the furcation entrance

Question 38

CEP Stage 2:

Answer 38

Approaches the entrance to the furcation, does not enter the furcation, no horizontal component is present

Question 39

CEP Stage 3

Answer 39

Extends horizontally into the furcation

Question 40

Palatal gingival groove

Answer 40

Groove that extends down the root which can be a highway for bacteria. 4-6 % of lateral MI

Question 41

Short Root trunk

Answer 41

Less attachment to be lost before furcation involvement, easier access to tx

Question 42

Long root trunk

Answer 42

More attachment to be lost before furcation involvement, less accessible to tx plaque control

Question 43

Free Gingival groove

Answer 43

Demarcation btw attached gingiva and mucosa (50% incidence)

Question 44

Attachment of JE

Answer 44

attaches to the tooth via hemidesmosomes and non-collagenous proteins (proteoglycans and glycosaminoglycans)

Question 45

Alveolar crest PDL fibers

Answer 45

Cementum -> crest of alveolar bone prevents extrusion

Question 46

Horizontal PDL fibers

Answer 46

Cementum -> alveolar bone at 90 degree to surface (opposes lateral forces)

Question 47

Oblique PDL Fibers

Answer 47

Cementum -> Alveolar bone in slight coronal direction (largest group resisting vertical masticatory forces)

Question 48

Apical PDL fibers

Answer 48

Cementum -> apical alveolar bone resisting luxation and tipping

Question 49

Interradicular PDL fibers

Answer 49

Cementum -> furcation bone resists laxation and tipping

Question 50

PDL fibers main fxn

Answer 50

support, nutrition, formative sensory (shock absorbers)

Question 51

PDL fibers contain

Answer 51

Blood vessels, collagen type 1, 3, 4, proprioceptive nerve endings (transmits pressure and pain via trigeminal nerve)

Question 52

Acellular cementum is

Answer 52

coronal 1/3

Question 53

Cellular cementum is

Answer 53

apical 1/3

Question 54

Cementum is

Answer 54

calcified mesenchymal tissue (45-50% hydroxyapatite), non-vascularized, no nerves, no lymph, grows by apposition