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Short-term and semi-long-term tissue reactions to a mixture of “endodontopathic” bacteria are described. The bacteria are enclosed in experimental implant tubes simulating some aspects of the infected dental pulp. Localized abscesses develop in response to mixed bacterial contents of the implants. No abscess formation occurred with pure cultures (that is, either component of the mixture). Pathogenic inocula attract leukocytes to the adjacent tissues, which become inflamed and cause influx of leukocytes into the lumen of the implant proper.
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