J Korean Acad Oral Health.  2020 Dec;44(4):240-245. 10.11149/jkaoh.2020.44.4.240.

Analysis of the distribution and association of periodontal disease-causing bacteria in saliva according to the severity of periodontitis in the elderly in some communities

• Lee S
• Jung YS
• Song KB
• Choi YH

• KMID: 2510260
• DOI: http://doi.org/10.11149/jkaoh.2020.44.4.240

Abstract

Objectives
Periodontitis-causing microorganisms and their virulence factors can provoke periodontal destruction in the host. This study was aimed at evaluating the distribution of periodontal disease and its relationship with 11 periodontal disease-causing bacteria in the elderly.
Methods
Individuals aged 60 years or above were recruited after obtaining informed consent. The clinical attachment loss was measured at studied sites to determine the severity of periodontitis. Further, the stimulated salivary samples were collected and analyzed with real-time polymerase chain reaction to detect 11 strains of periodontitis-causing bacteria.
Results
The severity of periodontal disease was proportional to the amount of periodontal diseasecausing bacteria. Porphyromonas gingivalis in the red complex increased from 6.60±5.50 in stage 1 to 5.36±5.39 in stage 2 and 7.19±5.56 in stage 3 (P=0.003). Tannerella forsythia increased from 6.54±4.60 in stage 1 to 7.44±4.56 in stage 2 and 8.49±4.70 in stage 3 (P=0.007).
Conclusions
The presence of complex bacterial groups and their number of strains were high in participants with severe periodontitis. Controlling periodontitis-related bacteria is important for periodontal health in the elderly.

Keyword

Clinical attachment loss; Elderly; Periodontitis

Figure

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  Fig. 1 Pyramid of periodontitis complexes and their approximate positions1).

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  Fig. 2 Prevalence of periodontitis causative bacteria by periodontal disease stage (%).

Reference

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