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Correlation between periodontal status and biting force in patients with chronic periodontitis during the maintenance phase of therapy
: Gu¨ lnur Emingil
: 3
: Blackwell Synergy
: 2008
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Summary :
Aim: We investigated gingival crevicular fluid (GCF) and serum matrix metalloproteinase-8 (MMP-8) and tissue inhibitor of matrix metalloproteinase-1 (TIMP-1) levels from renal transplant patients receiving cyclosporine-A (CsA) and having gingival overgrowth (GO), from patients receiving CsA therapy and having no GO and patients receiving tacrolimus therapy. Material and Methods: GCF samples were collected from sites with GO (GO1) and without GO (GO) in CsA patients having GO; and GO sites in CsA patients having no GO; sites from tacrolimus, gingivitis and healthy subjects. GCF and serum MMP-8 and TIMP-1 levels were determined by a time-resolved immunofluorometric assay (IFMA) and enzyme-linked immunosorbent assay. Results: GO1 sites in CsA patients having GO had elevated GCF MMP-8 levels compared with those of CsA patients having no GO, tacrolimus and healthy subjects (po0.005), but these levels were similar to those of gingivitis. The GCF MMP-8 level was higher in GO1 compared with GO sites in CsA patients having GO (po0.05). GCF TIMP-1 levels were similar between groups. Tacrolimus patients had lower GCF MMP-8 levels than gingivitis (po0.005), but levels similar to the healthy group. Conclusion: These results show that CsA and tacrolimus therapy has no significant effect on GCF MMP-8 levels, and gingival inflammation seems to be the main reason for their elevations.

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