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The International Journal of Oral & Maxillofacial Implants



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Int J Oral Maxillofac Implants 30 (2015), Nr. 3     19. Mai 2015
Int J Oral Maxillofac Implants 30 (2015), Nr. 3  (19.05.2015)

Seite 583-587, doi:10.11607/jomi.3946, PubMed:26009909, Sprache: Englisch

Identification of Enterococcus Faecalis and Pseudomonas Aeruginosa on and in Implants in Individuals with Peri-implant Disease: A Cross-Sectional Study
Canullo, Luigi / Rossetti, Paulo Henrique Orlato / Penarrocha, David
Purpose: To verify whether the parts of dental implants can be contaminated by opportunistic pathogens.
Materials and Methods: In this cross-sectional study, 38 individuals (52 implants) were investigated. Samples for microbiologic analysis (for a total of 180 sites) were obtained from each individual, from three types of sites in the following order: (1) the peri-implant sulcus of each implant, (2) the gingival sulcus of adjacent teeth, and (3) inside the implant-abutment connection and the abutment of each implant. Swabs from the oral mucosa (cheeks, tongue, and pharynx) were also collected. Quantitative real-time polymerase chain reaction was carried out for total bacterial counts of Enterococcus faecalis and Pseudomonas aeruginosa. Two-way analysis of variance (sites, species) and Holm-Sidak tests were used for statistical analyses.
Results: No opportunistic bacteria were found in the gingival sulcus specimens (38 sites). E faecalis was detected in the peri-implant sulcus (3 of 52 sites) and the inner connection/abutment portion (3 of 52 sites). P aeruginosa was identified only in the oral mucosa swabs (1 of 38 sites) and represented the highest bacterial number (3.5 × 106). Statistically significant differences were only found between species and in the peri-implant sulcus.
Conclusion: Within the limitations of this study, significant differences in the presence and levels of nosocomial bacteria were detected in the peri-implant environment of diseased implants. From a clinical point of view, data from this study might suggest that, in patients affected by peri-implantitis, prostheses should be removed and the implant-abutment connection disinfected routinely, along with implant surface decontamination.

Schlagwörter: implant connection, microbiologic analysis, opportunistic pathogens, peri-implant disease, peri-implantitis
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