Which of the following is true about Aggressive periodontitis
Classification and Clinical Characteristics
Features
The 1999 international classification workshop defined the entity of aggressive periodontitis to be characterized by three primary features (Table):
TABLE  
Diagnostic Criteria to Distinguish Chronic and Aggressive Periodontitis
Slow progression, rapid episodes possible
Familial aggregation is typical feature.
Local factors often commensurate with observed periodontal destruction
Often found in older patients but can be found in all age groups.