The Effect of Nonsurgical Periodontal Therapy on Trichomonas Tenax and Entamoeba Gingivalis in Patients with Chronic Periodontitis.
BACKGROUND
Trichomonas tenax and Entamoeba gingivalis are commensal protozoa which inhabit the human oral cavity. These parasites are found in patients with poor oral hygiene and might be a reason for progressive periodontal diseases.


OBJECTIVE
The aim of this study was to evaluate the effect of nonsurgical periodontal treatment on the frequency of these protozoa in saliva and plaque samples.


METHODS
In this clinical trial, samples of saliva and dental plaque were collected from 46 patients with moderate to severe chronic periodontitis before and after periodontal therapy. The samples were assessed for the frequency of parasites.


RESULTS
The frequency of Entamoeba gingivalis was reduced in saliva (p= 0.007) and plaque (p= 0.027) three weeks after the treatment. Likewise, the frequency of Trichomonas tenax reduced in saliva (p= 0.030); however, the decrease was not significant in plaque (p= 0.913). Trichomonas tenax frequency in dental plaque directly related to the severity of periodontitis (r= 0.565, p≤ 0.000). In contrast, the number of Entamoeba gingivalis in both saliva (r= -0.405, p≤ 0.005) and plaque (r= -0.304, p= 0.040) was inversely related with the severity of the periodontal disease.


CONCLUSIONS
Nonsurgical periodontal treatment could reduce the number of Trichomonas Tenax and Entamoeba gingivalis in the oral environment of patients with chronic periodontitis.
Dept. of Periodontology, Shahid Sadoughi University of Medical Sciences, Yazd, Iran.
Fahimeh
F
Rashidi Maybodi
Dept. of Periodontology, Shahid Sadoughi University of Medical Sciences, Yazd, Iran.
Ahmad
A
Haerian Ardakani
Dept. of Parasitology & Mycology, Shahid Sadoughi University of Medical Sciences, Yazd, Iran.
Ali
A
Fattahi Bafghi
Dept. of Orthodontics, Shahid Sadoughi University of Medical Sciences, Yazd, Iran.
Alireza
A
Haerian Ardakani
Dept. of Periodontology, Shahrekord University of Medical Sciences, Shahrekord, Iran.
Akram
A
Zafarbakhsh
Entamoeba Gingivalis; Parasite; Periodontitis; Trichomonas Tenax