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Evaluation of red-complex bacteria loads in complete denture patients: a pilot study
Enis Veseli1, Gloria Staka2,3, Marcos Roberto Tovani-Palone4
1Department of Prosthodontics, Dental School, Faculty of Medicine, University of Pristina, Pristina, Kosovo. enis.veseli@uni-pr.edu.
BDJ Open
|February 21, 2023
Summary
Complete dentures significantly increase red-complex bacteria (RCB) loads in edentulous patients. This study monitored RCB levels before and after denture insertion, revealing a notable rise in specific bacteria like P. gingivalis.
Area of Science:
- Oral microbiology
- Periodontology
- Prosthodontics
Background:
- Red-complex bacteria (RCB) are associated with periodontal disease.
- Edentulous patients may experience changes in oral microbiota with prosthetic devices.
Purpose of the Study:
- To assess the impact of complete dentures (CDs) on red-complex bacteria (RCB) loads.
- To quantify RCB levels in edentulous patients before and after denture insertion.
Main Methods:
- A pilot study involved 30 edentulous patients.
- Real-time polymerase chain reaction (RT-PCR) quantified RCB (Tannerella forsythia, Porphyromonas gingivalis, Treponema denticola) DNA from tongue samples.
- Samples were collected before and 3 months after complete denture (CD) insertion.
Main Results:
- Significant increases in P. gingivalis, T. forsythia, and T. denticola loads were observed 3 months post-CD insertion.
- Initially, all patients exhibited normal bacterial prevalence.
- After 3 months, a moderate prevalence of P. gingivalis was noted in 6.7% of patients.
Conclusions:
- Complete denture use significantly elevates RCB loads in edentulous individuals.
- The findings highlight the influence of prosthetic devices on oral bacterial dynamics.

