GENERAL CHARACTERISTICS OF AGGRESSIVE PERIODONTITIS
1. Alternative Terminology. Until recently, aggressive periodontitis
was defined as occurring in individuals under the age of 30 years and was known as early periodontitis (EOP). The AgP features, you can present at any age and is not limited to those under randomly selected at the age of 30.
A. Main Features. The main features of aggressive periodontitis 
1. Quickly removing attachments and rapid loss of bone
2. No obvious signs or symptoms of systemic disease
3. Other family members (parents, brothers, sisters) with aggressive periodontitis
B. Secondary Functions. Secondary features, which are usually but not always present
1. Relatively small amounts of bacterial plaque biofilm, the severity of the disease seems to be exaggerated light given the amount of plaque biofilm
2. Increased proportion Aggregatibacter actinomycetemcomitans (Aa)
3. Faguoqitirute anomalies
4. Increased production of prostaglandin E2 (pge2 and others) and interleukin-1 (3 Il-lp) in response to bacterial endotoxins
The absence of clinical signs of disease
a. Affected tissue can have a normal clinical picture
B. Probing reveals deep periodontal pockets on the affected tooth
6. Poor response to periodontal treatment
7. Episodic disease progression (Fig. 16-1)
a. Chronic periodontitis is a very slowly progressing disease.
B. In aggressive periodontitis, loss of investment is episodic, occurring in the sequence of acute destructive phase with intermittent inactive phase.