Abstract:
AIMS:To identify Gram-positive rods from root canals of teeth with apical periodontitis and to examine their associations with other species. METHODOLOGY:Consecutive root canal samples (RCSs) from 139 teeth undergoing root canal treatment were analyzed prospectively for cultivable microbes. Gram-positive rods in the first RCS submitted after chemo-mechanical preparation were categorised to genus level by selective media and gas-liquid chromatography (GLC), and identified to species level by sodium dodecyl sulphate-polyacrylamide gel electrophoresis (SDS-PAGE). Associations between organisms were measured by odds ratios (OR). RESULTS:In the first samples submitted a total of 158 Gram-positive rods, 115 Gram-positive cocci, 26 Gram-negative rods and 9 Gram-negative cocci, were identified. At genus levels Gram-positive rods were classified into: Lactobacillus spp. (38%), Olsenella spp. (18%), Propionibacterium spp. (13%), Actinomyces spp. (12%), Bifidobacterium spp. (13%) and Eubacterium spp. (6%). The most frequent species were Olsenella uli, Lactobacillus paracasei and Propionibacterium propionicum. In subsequent samples taken during treatment, Gram-positive rods were also identified, although the number of strains was considerably reduced. Positive associations were observed between members of the genus lactobacilli and Gram-positive cocci (OR>2). CONCLUSIONS:Olsenella uli and Lactobacillus spp. predominated over other Gram-positive rods. A possible association exists between Lactobacillus spp. and Gram-positive cocci in root canals of teeth with apical periodontitis receiving treatment.
journal_name
Int Endod Jjournal_title
International endodontic journalauthors
Chávez de Paz LE,Molander A,Dahlén Gdoi
10.1111/j.1365-2591.2004.00845.xkeywords:
subject
Has Abstractpub_date
2004-09-01 00:00:00pages
579-87issue
9eissn
0143-2885issn
1365-2591pii
IEJ845journal_volume
37pub_type
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journal_title:International endodontic journal
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更新日期:1999-08-01 00:00:00
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更新日期:2011-04-01 00:00:00
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更新日期:2019-06-01 00:00:00
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journal_title:International endodontic journal
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journal_title:International endodontic journal
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更新日期:1992-05-01 00:00:00
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更新日期:2004-12-01 00:00:00
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journal_title:International endodontic journal
pub_type: 杂志文章
doi:10.1111/j.1365-2591.1995.tb00169.x
更新日期:1995-03-01 00:00:00
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更新日期:1989-11-01 00:00:00
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journal_title:International endodontic journal
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更新日期:2002-11-01 00:00:00
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更新日期:1989-09-01 00:00:00
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更新日期:2021-01-01 00:00:00
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pub_type: 杂志文章,评审
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更新日期:2018-08-01 00:00:00
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pub_type: 杂志文章,多中心研究
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更新日期:2002-05-01 00:00:00
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更新日期:2017-01-01 00:00:00
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更新日期:2013-12-01 00:00:00
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更新日期:2017-08-01 00:00:00
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pub_type: 杂志文章
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更新日期:2004-02-01 00:00:00
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journal_title:International endodontic journal
pub_type: 杂志文章
doi:10.1111/j.1365-2591.1993.tb00539.x
更新日期:1993-01-01 00:00:00
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journal_title:International endodontic journal
pub_type: 杂志文章
doi:10.1046/j.0143-2885.2001.00494.x
更新日期:2002-04-01 00:00:00
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journal_title:International endodontic journal
pub_type: 杂志文章
doi:10.1111/iej.13450
更新日期:2020-11-20 00:00:00