“…AgP is defined as a destructive periodontal disease affecting more than 14 teeth in young individuals. Its etiology has been linked to the presence of Aggregatibacter actinomycetemcomitans (Fine et al, 2007;Haraszthy et al, 2000;Di Rienzo et al, 1994), host response defects (Page et al, 1984Lavine et al, 1979), and possibly to genetic inheritance (Hart & Kornman, 1997;Kinane et al, 2000;Boleghman et al, 1992;Beaty et al, 1987;Hart et al, 1992;Melnick et al, 1976;. In contrast, chronic periodontitis is characterized by a lower rate of progression (Schätzle et al, 2009), although like AgP it can reach a severe stage, leading to tooth loss and edentualism.…”