Quintessence International, cilt.51, sa.3, ss.212-218, 2020 (SCI-Expanded)
Objective: The aim was to investigate the presence of Entamoeba gingivalis and Trichomonas tenax in peri-implantitis lesions. Method and materials: A total of 141 individuals were included in this study, of which 40 had clinically healthy implants (group H); the remaining were associated with peri-im-plantitis (group P). Gingival crevicular fluid was collected using absorbent paper, followed by a dental plaque sample from the peri-implant sulcus/pocket using a titanium curette. The sam-ples were transferred into an Eppendorf tube. Each specimen was divided into two parts. One part was examined under a light microscope at a 10 x and 40 x magnification to detect parasites. The other part was spread on a microscope slide, stained with Giemsa stain, and examined under a microscope at 100 x magnification. Pearson chi-square test was used in the statistical analysis of data, with a significance level of P < .0b. Results: Although there was no presence of parasite around the healthy implants, two parasites were detected in peri-implantitis lesions. Out of 101 lesions, 31 (30.7%) showed Egingivalis, and 34 (33.6%) presented with Ttenax.lhere was a statistically significant difference between the presence of Egingivalis and demographic data including gender, education status, frequency of dental visits, and brushing frequency. Presence of T tenax in lesions was correlated with frequency of dental visits (P < .05). It was observed that Egingivalis and T tenax were mostly detected in the mandible (P = .004 and .014, respectively) in comparison with the maxilla. Conclusion: This study showed that peri-implantitis lesions were involved with E gingivalis and T tenax, in contrast to the healthy areas.