Restorative Dentistry and Endodontics
- Volume 11 Issue 1
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- Pages.97-103
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- 1985
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- 2234-7658(pISSN)
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- 2234-7666(eISSN)
A STUDY ON THE ISOLATION OF BLACK-PIGMENTED BACTEROIDES IN THE NECROTIC PULP
괴사치수에서의 Black-pigmented Bacteroides 균주분리에 관한 연구
- Choi, Han-Seuk (Dept. of Operative Dentistry, Seoul National University) ;
- Yoon, Soo-Han (Dept. of Operative Dentistry, Seoul National University) ;
- Chung, Jong-Pyoung (Dept. of Periodontics, Seoul National University)
- Published : 1985.12.31
Abstract
The purpose of this study was to compare Black-pigmented Bacteroides isolated from necrotic pulp with the presence or absence of eight symptoms associated with pulpal necrosis and to identify the proportion of each Black-pigmented Bacteroides species. The canal contents of fourteen traumatically and cariously necrotized teeth were sampled with a special technique and cultured aerobically and anaerobically for growth in blood agar plate and for Black-pigmented Bacteroides on selective blood agar plate. Each Black-pigmented Bacteroides species were identified by Gram's stain, hemolysis reaction, colony color and morphology and biochemical tests. The results were as follows; 1. 60.9 percent of the bacteria isolated were anaerobic and 39.1 percent were aerobic. 2. Four Black-pigmented Bacteroides species were isolated; B. loescheii (74.1%), B. denticola (11.1%), B. intermedius (7.4%) and B. gingivalis (7.4%). 3. Black-pigmented Bacteroides was found to be significantly related to sinus tract formation and exudate.
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