Classifications

Question 1

Generalized periodontitis: Periodontitis is considered generalized.

Answer 1

When >30% of the sites assessed in the mouth demonstrate attachment loss and bone loss.

Question 2

The pattern of bone loss observed in chronic periodontitis may be vertical.

Answer 2

When attachment and bone loss on one tooth surface is greater than that occurring on an adjacent surface,

Question 3

The pattern of bone loss may be horizontal.

Answer 3

When attachment and bone loss proceed at a uniform rate on the majority of tooth surfaces.

Question 4

Vertical bone loss

Answer 4

Is usually associated with angular bony defects and intrabony pocket formation.

Question 5

Horizontal bone loss

Answer 5

Is usually associated with suprabony pockets

Question 6

Slight (mild) periodontitis:

Answer 6

Periodontal destruction is generally considered slight when no more than 1 to 2 mm of clinical attachment loss has occurred.

Question 7

Moderate periodontitis:

Answer 7

Periodontal destruction is generally considered moderate when 3 to 4 mm of clinical attachment loss has occurred.

Question 8

Severe periodontitis:

Answer 8

Periodontal destruction is considered severe when 5 mm or more of clinical attachment loss has occurred.

Question 9

Localized periodontitis: Periodontitis is considered localized.

Answer 9

When <30% of the sites assessed in the mouth demonstrate attachment loss and bone loss.