An observational study in Periodontitis, sponsored by Nantes University Hospital. Status unknown at 1 site in France. Open to participants aged 18 Years and older. Per ClinicalTrials.gov, last updated 2020-02-05.
Sponsored by Nantes University Hospital · Observational
A new classification of periodontal diseases was created in 2018. the investigators want to know if this clinical classification is based, or not, on a biological reality. To do this, the investigators will collect data from the clinical examination (clinical assessment and radiological assessment) as well as non-invasive samples of subgingival plaque and crevicular gingival fluid (CGF). The subgingival plaque samples will be analyzed to define the microbiotic profiles of the patients and the CGF determined to define their inflammatory expression profiles. These results will then be linked to the diagnosis of severity of periodontitis.
In the new classification of periodontal disease, the investigators will seek to know whether there is a specific bacterial signature associated with the severity of damage on the one hand, and the other hand, the investigators will search for cytokinic biomarkers which can be correlated with the severity of the damage.
In this study, the investigators propose to include 25 patients with periodontitis stage I and II versus stage III and IV according to Chicago classification (2018)
1,635 studies on the registry are indexed under Periodontitis; 327 are open to participants now.
This study's planned enrollment of 25 is below the median of 90 across 428 observational studies indexed under Periodontitis.
Browse Periodontitis studies →Nantes University Hospital is the lead sponsor of 825 studies on the registry; 195 are open to participants now.
Counted across the registry records on this site, refreshed daily.
All patient coming in consultation for generalized periodontitis .
Exclusion Criteria:
patient with periodontitis stage I and II
Other: subgingival plaque sample · Other: CGF sample
patient with periodontitis stage III and IV
Other: subgingival plaque sample · Other: CGF sample
for subgingival plaque sample, on three affected sites (PD\>3mm) and three healthy sites (PD≤3mm), after supra-gingival plaque removal, sterile endodontic paper points were inserted in selects pockets for 30s to collect the subgingival plaque. The material was transferred into eppendorf tube, one for affected samples and one for healthy samples.
each site was sampled with a PerioPaper Strip® (Oraflow), and the volumes collected were measured with a Periotron® (Oraflow). Then samples of affected sites were stowed in an eppendorf tube with 120µL of PBS Tween. The same procedure was performed for the healthy sites
Microbiota analysis of subgingival plaque
sample analysis by microbiome sequencing with 16S technics of subgingival plaque of affected sites and healthy sites
Time frame: through study completion, an average of 1 year
Cytokinic concentrations in CGF
cytokinic concentration analysis (IL1β, IL , TNFα, IL2, IL4, IL10, IL17α) in CGF of affected sites and healthy sites
Time frame: through study completion, an average of 1 year
This study is status unknown, as verified in Jan 2020. You cannot join it, but the record below documents what was studied.
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Nantes University Hospital