Anaerobic bacteria in dentoalveolar infections

Department of Oral Surgery, Huddinge University Hospital, Stockholm, Sweden
International Journal of Oral Surgery 11/1981; 10(5):313-22. DOI: 10.1016/S0300-9785(81)80027-0
Source: PubMed


The bacteriology of 57 dentoalveolar infections was studied using optimal techniques to collect, transport and process specimens. There was an average of 4 bacterial species per specimen, and only 1/3 of the specimens held aerobes. Among the aerobic bacteria, streptococci dominated and among the anaerobes the Gram-negative rods, Bacteroides ruminicola and Fusobacterium nucleatum, were most frequently isolated followed by Gram-positive cocci, in particular Streptococcus intermedius. All aerobic isolates were resistant to penicillins but sensitive to clindamycin and tinidazole. The other anaerobic isolates were sensitive to penicillins but showed varying susceptibility to erythromycin and doxycycline. Tinidazole was effective against all anaerobic Gram-negative rods. The presence of volatile fatty acids in pus from dentoalveolar infections was found to be of presumptive value for the diagnosis of anaerobic infections. Direct gas-liquid chromatographic analysis of pus is recommended as a routine procedure for preliminary diagnosis of anaerobic dentoalveolar infections.

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    • "Williams et al. (1983), Brook et al. (1991), Wayman et al. (1992), and Wasfy et al. (1992) found no significant association between dento-alveolar abscesses and milleri group streptococci. However, Lewis et al. (1986) demonstrated S. milleri in 40% ofdento-alveolar abscesses examined , twice in pure culture, and Von Konow et al. (1981) also found S. milleri to be the most common facultative anaerobe in their study of orofacial infections. It seems probable that the importance ofmilleri group streptococci has previously been underestimated by many workers because difficulties in the identification of this group of organisms may have led to a failure to recognize their presence. "
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    ABSTRACT: Reports of the isolation of streptococci from dental abscesses have shown an association of the "S. milleri" group with such lesions. There has been considerable confusion regarding the taxonomy of these organisms, but the milleri group has recently been reclassified into three distinct species: Streptococcus anginosus, Streptococcus constellatus, and Streptococcus intermedius. In this study, 45 samples from dental periapical abscesses were examined. Milleri group streptococci were isolated from 16 patients (37%), 15 being identified as S. anginosus and one as S. intermedius. In one patient, S. anginosus was isolated in pure culture, and it would appear that this is the predominant species of milleri group streptococci associated with periapical abscesses.
    Journal of Dental Research 09/1993; 72(8):1191-3. DOI:10.1177/00220345930720080501 · 4.14 Impact Factor
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