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Periodontal diseases ranges from simple gum inflammation to serious disease that consists in major damage to the soft tissue and bone teeth support. Periodontal diseases affects the marginal and apical periodontium and results from the interaction between bacterial biofilm and the host response. To determine the concentrations of MMP-8, as a disease marker, in saliva in prosthetic and nonprosthetic, aggressive (AP) and chronic (CP) periodontitis, doxycycline treated patients. 40 patients were distributed into 3 groups: 12 diagnosed with aggressive (AgP), 18 with chronic (CP) periodontitis. Each of these groups was subdivided into 2 subgroups with and without fixed prosthesis. 10 patients were in the normal group. Matrix metalloproteinase 8 (MMP-8) was evaluated before and after systemic doxycycline (Dox) treatment. mean MMP-8 value into the control group was 0.57 ng/mL with a standard deviation (STD) of 0,094 ng/mL. Highest MMP-8 value was established for the nonprosthesis AgP subgroup, before Dox treatment. The highest reduction in MMP-8 levels (40.8%) was between nonprosthesis AgP before Dox treatment and the same group after Doxycycline treamtent.  MMP-8 saliva levels are lower than GCF levels, mostly through a dilution mechanism as previous studies had shown. Our study revealed that saliva MMP-8 level is relible marker for AgP but not for CP.  Doxycycline treatment, in terms of lowering MMP-8 levels is most effective in patients that have AP and are also wearing fixed.

revista de chimie

Collagenase-2- (MMP-8) as a Poimt - of- care Biomerker in Periodontal Disease in Patients with or Without Fixed Prosthesis Therapeutic Response to Doxycycline