“…Further studies aiming to rate the genetic risk for periodontitis have focused on molecular levels of IL-1, IL-6, TNF-α, Vitamin-D receptor, Fc-gamma receptor, IL-10, and matrix metalloproteinase [170,171]. e interest in the determination of the diagnostic value of metalloproteinases, in fact, is well known not only in periodontal diseases [172] but also in caries, pulp, and periapical inflammations [173,174] and some cancers [175][176][177]. Moreover, other authors focused on genetic disorders related to periodontitis, since several syndromes, such as Chèdiak-Higashi, trisomy 21, Ehlers-Danlos, Papillon-Lefèvre, Haim-Munk, leukocyte adhesion deficiency (LAD), and lazy leukocyte syndrome, show a periodontal disease history, due to anomaly in aggregation and action of neutrophils [178].…”