Abstract
ABSTRACT Background: Endodontic microbial flora plays a pivotal role in the development and persistence of periodontal endodontic lesions (PELs). Understanding the composition and prevalence of microbial species in PELs is essential for effective treatment strategies Materials and Methods: Microbial samples were collected from 50 teeth diagnosed with PELs. Sterile paper points were used to obtain samples from the root canals. Deoxyribonucleic acid (DNA) was extracted and subjected to polymerase chain reaction (PCR) amplification of the 16S ribosomal RNA (rRNA) gene to identify bacterial species. The obtained data were analyzed using statistical methods. Results: The microbial analysis revealed a diverse range of bacterial species in PELs. The most prevalent species were Porphyromonas gingivalis (32.5%), Treponema denticola (28.0%), and Fusobacterium nucleatum (22.5%). Streptococcus mutans (9.0%) and Actinomyces naeslundii (8.0%) were also frequently detected. Additionally, Prevotella intermedia (7.0%), Aggregatibacter actinomycetemcomitans (3.5%), and Enterococcus faecalis (2.5%) were present in lower frequencies Conclusion: The presence of a diverse microbial flora in teeth with PELs underscores the polymicrobial nature of these lesions. The predominance of periodontal pathogens such as Porphyromonas gingivalis, Treponema denticola, and Fusobacterium nucleatum suggests a strong association between periodontal and endodontic infections. A comprehensive understanding of the microbial profile in PELs is crucial for tailored therapeutic approaches targeting the specific pathogens involved.
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