Interpretation of Periodontal disease

Question 1

Destructive inflammatory disease affecting

supporting structures of the teeth

Answer 1

Periodontal Disease:

Question 2

only the soft tissues are involved

Answer 2

Gingivitis:

Question 3

soft tissues and supporting bone

affected

Answer 3

Periodontitis:

Question 4

• Major cause of tooth loss in 
patients > 35 years
• Severity of disease increases with
•Age
•Amount of plaque
•Amount of bacterial micro-flora

Answer 4

Periodontal disease

Question 5

Clinical signs of \_\_\_\_:
• Edema, erythema of the tissues
• Loss of epithelial attachment to 
tooth surface and pocket formation
• Bleeding on probing
• Purulence

Answer 5

Clinical signs of periodontal diseases

Question 6

____ bone loss occurs once 70-75% of remaining dentition is affected

Answer 6

Generalized

Question 7

• Abnormal angulation 
or bend in the root 
(and occasionally the 
crown) of a tooth
• Some related to 
trauma during 
odontogenesis
• idiopathic

Answer 7

Dilaceration

Question 8

Even/uniform apical movement of the alveolar
crestal bone height along adjacent root surfaces
between affected tooth/teeth

Answer 8

Horizontal Bone Loss:

Question 9

T/F: Alveolar bone is never at CEJ

Answer 9

True

Question 10

Are posterior or anterior bone crests flat?

Answer 10

Posterior

Question 11

Are posterior or anterior bone crests pointed?

Answer 11

Anterior

Question 12

____ bone loss

–slight crestal bone loss of < 1.0 –2.0mm, but less than 20%

Answer 12

• 1. Incipient bone loss

Question 13

____ bone loss

–evidence of ~20% up to 50% bone loss

Answer 13

• 2. Moderate bone loss

Question 14

____ bone loss

–evidence of 50% or more of bone loss; evidence of vertical defects

Answer 14

• 3. Advanced bone loss

Question 15

Angular bone loss along a root that more
severely involves the affected tooth/teeth than
the adjacent teeth

Answer 15

Vertical Bone Loss:

Question 16

Loss of bone in furcations happens with HBL or VBl?

Answer 16

Both

Question 17

• Defined as: Length of radiographic crown
Length of radiographic root
• An index expressed as a ratio that gives
an indication of a tooth’s prognosis
• A ratio of more than (>) 1:2 has a poor
prognosis

Answer 17

Crown to root ratio

Question 18

If the crown to root ratio is greater than ______, the prognosis is poor

Answer 18

1:2

Question 19

How much demineralization of bone is necessary to be able to see it on a radiograph?

Answer 19

40-50%