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ABSTRACT: Background: As well as gingival crevicular fluid (GCF), peri-implant sulcus fluid (PISF) may have a potential diagnostic value for the early identification of metabolic and destructive processes.Purpose: The aim of this study was to analyze the potential impact of inflammation and loading on PISF myeloperoxidase (MPO) levels, in comparison with GCF.Materials and Methods: A total of 220 sites, dental implant (immediately [IL] or delayed loaded [DL]), and natural tooth, either healthy/noninflamed or gingivitis/inflamed, were classified. Clinical parameters were recorded, and GCF/PISF samples were obtained. GCF/PISF MPO levels were spectrophotometrically determined.Results: Clinical parameters demonstrated increases with the presence of gingival/peri-implant inflammation. Total MPO levels were higher at inflamed tooth and implant sites compared to noninflamed/healthy sites (p < .05). Although they did not reach a significance level, inflamed IL sites had higher total MPO levels than inflamed DL sites (p = .401). Gingival index and total MPO levels exhibited significant correlations (p < .05).Conclusion: Using implants and natural teeth in the same study design, the findings of the present study support the close relationship between MPO production and inflammation, and may speculate a potential for loading of dental implants, contributing to the MPO content of PISF.
Clinical Implant Dentistry and Related Research 02/2008; 10(1):30 - 39. · 3.82 Impact Factor