Classification

Question 1

World Workshop 1966

Answer 1

Held at U-M by Ramfjord

Shift from term periodontosis to periodontitis (inflammatory rather than degenerative)

Question 1

Page and Schroeder 1976

Answer 1

1) adult
2) rapidly progressive
3) Juvenile
4) Pre-pubertal

Question 2

AAP Classification of 1989

Answer 2

Adult periodontitis >35 y/o
Early onset perio < 35 years
* rapidly progressive
* juvenile
* post-juvenile
* pre-pubertal

Periodontitis associated with systemic disease

Refractory periodontitis

Nectrotizing ulcerative periodontitis

Problems:
* overlap of categories
* no gingival disease component
* inappropriate emphasis on age

Question 3

AAP Classification 1999

Answer 3

replaced adult with chronic and early onset with aggressive

localized and generalized (not tooth specific)

Question 4

AAP task force 2015

Answer 4

introduction of reduced periodontium

Question 5

2017 AAP - Intact periodontium

Answer 5