title: Microbiological evaluation of periapical infections in Egypt.
abstract: This study identifies and correlates proportions of bacteria in periapically involved anterior teeth of 85 adult Egyptian patients. Affected sites were free from caries and periodontal disease but had a history of trauma. The mean number of component bacterial species per specimen was 3.1. Anaerobic bacteria were the dominant flora present in specimen cultures, comprising 73% (190/259) of cultivable bacteria. The most frequently isolated organisms were Eubacterium species (68%), black-pigmented Bacteroides (56%), Streptococcus morbillorum (47%) and non-pigmented Bacteroides (37%). These organisms also showed the highest proportional values relative to total cultivable bacteria. The mean percentages of total viable counts of these isolates were 19.0%, 14.1%, 18.0% and 15.5%, respectively. Statistical analysis of data revealed a significant negative correlation between S. morbillorum and Bacteroides species.
authors.affiliation: Baltimore College of Dental Surgery.
authors.forename: M O
authors.initials: MO
authors.lastname: Wasfy
authors.forename: K T
authors.initials: KT
authors.lastname: McMahon
authors.forename: G E
authors.initials: GE
authors.lastname: Minah
authors.forename: W A
authors.initials: WA
authors.lastname: Falkler
mesh_terms: D000293:Adolescent; D000328:Adult; D001421:Bacteria, Anaerobic / Q000302:isolation & purification; D001439:Bacteroides / Q000302:isolation & purification; D004534:Egypt; D005051:Eubacterium / Q000302:isolation & purification; D005673:Fusobacterium / Q000302:isolation & purification; D006801:Humans; D008875:Middle Aged; D010482:Periapical Abscess / Q000382:microbiology*; D013291:Streptococcus / Q000302:isolation & purification; D015163:Superinfection