Searching for Helicobacter pylori and Chlamydia pneumoniae in primary endodontic infections

ABSTRACT

Objectives: The purpose of this study was to search samples from primary endodontic infections for the presence of two common human bacterial pathogens -Helicobacter pylori and Chlamydia pneumoniae

Methods: Genomic DNA isolated from samples taken from 25 root canals of teeth with asymptomatic (chronic) apical periodontitis and 25 aspirates from acute apical abscess was initially amplified by the multiple displacement amplification approach and then used as template in species-specific polymerase chain reaction (PCR) for detection of H. pylori and C. pneumoniae. Results: All clinical samples were positive for the presence of bacterial DNA. However, no clinical sample was positive for either H. pylori or C. pneumoniae

Conclusions: Neither H. pylori nor C. pneumoniae were found in samples from primary endodontic infections. These findings suggest that these species are not candidate endodontic pathogens and that the necrotic root canal does not serve as a reservoir for these human pathogens in healthy patients. (Eur J Dent 2012;6:158-162)

Key words

Helicobacter pylori - Chlamydia pneumoniae - apical periodontitis - acute apical abscess - polymerase chain reaction

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