Comparison of plaque microflora between Chinese and Caucasian population groups

Abstract

This investigation was designed to compare the predominant plaque micro-organisms from a Chinese group of patients exhibiting periodontitis with an age-, sex- and periodontal disease-matched Caucasian group of patients. In addition to race, the 2 population groups differed with respect to diet and oral hygiene habits, or effectiveness at removing plaque. Clinical measurements were determined along with an evaluation for micro-organisms in supragingival and subgingival plaque. Although the Chinese and Caucasian population groups were similar with respect to composition of micro-organisms in subgingival plaque, notable differences were observed in supragingival plaque. The Chinese group had higher mean proportions of spirochetes, motile rods. Fusobacterium spp. and dark-pigmented Bacteroides species, while the Caucasian group had higher mean proportions of cocci, total Actinomyces spp., A. viscosus and total Streptococcus spp. in supragingival plaque. The microbial differences observed in supragingival plaque may be explained at least in part, if not totally, by the higher plaque index scores of the Chinese versus Caucasian population groups.

Detection rate of Actinobacillus actinomycetemcomitans on the permanent 1st molars of primary school children in Taiwan by polymerase chain reaction

“…However, the major drawback of PCR is the inability of differentiating serotypes and antibiotic susceptibility and may not be an ideal candidate for clinical monitoring of treatment outcomes and disease activity. In terms of ethnic variations, several studies including Cao et al (1990) and Han et al (1991) have provided evidence that cultivation of oral microorganisms vary among different human races. For example, by comparing the predominant plaque microorganism from Chinese periodontitis patients and Caucasian patients, Cao et al (1990) found that the Chinese group had higher mean proportions of spirochetes, motile rods, Fusobacterium spp.…”

Occurrence of Actinobacillus actinomycetemcomitans, Porphyromonas gingivalis, and Prevotella intermedia in Progressive Adult Periodontitis

“…The occurrence of periodontal pathogens is significantly different among different ethnic groups, [13][14][15][16] and data also suggest that geographical factors may influence the presence of these species. Further, the distribution of A. actinomycetemcomitans in adolescents affected by localized juvenile periodontitis (LJP) appears to differ by geographic area or race.…”

Subgingival Microbiota of Chilean Patients With Chronic Periodontitis

“…1 The subgingival microbiota of patients with chronic periodontitis appears to vary significantly among different ethnic groups. [2][3][4][5][6] The majority of the microbiological studies to determine the characteristics of the subgingival microbiota have been carried out in developed countries, and little is known about the occurrence of periodontal pathogens in populations of developing countries with a high prevalence of periodontal diseases. Some previous studies 2- 6 have considered an association between race/ethnicity and the subgingival microbiota.…”