Affiliation:
1. Faculty of Dental Surgery University Paris Cité Paris France
2. Department of oral surgery Bretonneau Hospital AP‐HP Paris France
3. Department of oral surgery Henri Mondor Hospital AP‐HP Créteil France
4. Department of Odontology University Lorraine Nancy France
5. Faculty of Dental Surgery University Lorraine Nancy France
6. Biotechnology Laboratory SF Biotech Institut Clinident Aix en Provence France
7. Faculty of Dental Surgery University Cote d'Azur Nice France
8. CHU Nice Institut Riquier France
9. Laboratory MICORALIS UPR 7354 University Cote d'Azur Nice France
Abstract
AbstractBackground and AimsIn the case of mucous membrane pemphigoid with gingival expression (gMMP), the complete healing of the gingiva is generally not achieved despite medical treatment. Therefore, patients' oral comfort is impaired. The dysbiotic periodontal microbiota, generated by a lack of oral hygiene associated with persistent gingival pain, could the immunopathological mechanism to persist. The main objective of this study was to characterize the subgingival microbiota of the gMMP patients, and to highlight a potential link between this microbiological data and the clinical data.MethodsSubgingival biofilm was collected from 15 gMMP patients, medically treated or not, but not receiving periodontal treatment. The usual clinical periodontal parameters were recorded. The biofilm was analyzed by polymerase chain reaction quantitative. The risk factors of severe erosive gingivitis and severe periodontitis were assessed using Chi‐square or Fischer's exact test were used.ResultsWhatever the medical and periodontal conditions of the patients, the results showed the existence of three main communities of periodontopathic, dysbiotic bacteria. The first including Tannnerella forsythia, Peptostreptococcus micros, Fusobacterium nucleatum, and Campylobacter rectus, was found in 100% of the patients, the second enriched with Treponema denticola in 60% and the third enriched with Porphyromonas gingivalis and Prevotella intermedia in 26%. Furthermore, there was a significant positive link between the duration of gMMP and the severity of erosive gingivitis (p = 0.009), and the loss of deep periodontal tissue (p = 0.04).ConclusionThis pilot study suggests a high periodontal risk in gMMP patients. The pathological processes, autoimmune on the one hand and plaque‐induced on the other, may amplify each other. The application of periodontal therapy is therefore necessary in parallel with medical treatment. Nevertheless, further controlled studies are required to validate and complement these preliminary results.