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KMID : 0378019720150050139
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New Medical Journal
1972 Volume.15 No. 5 p.139 ~ p.145
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Bacteriological Studies on the Odontogenic Infection
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Abstract
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Replacement of streptococci by staphylococci as the prime pathogens in many types of infection has been a well-established fact for almost 15 years. It is interesting to observe that this is true only of dental infections which have spread beyond the tooth apex. Reported studies of root canal cultures continue to demonstrate 50% to 65% streptococcal growth, with a much smaller incidence of staphylococcal growth
MATERIALS & METHODS
Cultures were obtained from 74 patients who had acute dentoalveolar infections. These infections were periapical or periodontal ir origin and all bad spread beyond the alveolus to cause obvious erythematous fluctuant swelling in the buccal, sublingual, or submandibular areas. Pus swabs were inoculated on blood agar for growth and further identification.
In order to secure the 0-streptolysin of streptococcus and the alpha-hemolysin of staphylococcus, Antistreptolysin "0" Titer (AST) and .Antistaphylolysin Titer (ASTA) were performed on 52 sera, taken from the patients.
The results are summarized as follows:
1. Positive growth of pathogenic organisms was observed in 37 of 74 specimens. The other was reported as having no growth. Thirtyfive specimens revealed growth of only one pathogen, and 2 revealed mixed growth of two types of organisms.
2. The most common organism isolated was staphylococcus aureus and epidermidis (73%)
3. Nine percent of the cultures in this study of clinically significant oral infections revealed pure growth of gram negative rods.
4. Fourty-Six percent of the dentoalveolar infections showed marked elevation of AST. 5. In most of the dentoalveolar infections no elevation of ASTA was found.
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KEYWORD
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