Colonization of denture plaque by respiratory pathogens in dependent elderly.
OBJECTIVE
Recently, there has been a resurgence of interest in the interactions between oral conditions and a number of prevalent systemic diseases. The morbidity and mortality of the dependent elderly that result from aspiration pneumonia have been recognized as a major geriatric health problem. The purpose of this study was to gain more information on the microflora of plaque on dentures and to assess the existence of oral infectious pathogens potentially causing the respiratory disease in the dependent elderly.


METHODS
The denture bacterial flora of 50 dependent elderly were examined to identify microorganisms by the culture method.


RESULTS
18 species of microorganisms were detected in denture plaque in this study. A variety of pathogens with the potential to cause respiratory infection pathogens colonized on the dentures of dependent elderly.


CONCLUSIONS
The results of the present study revealed that bacteria that commonly cause respiratory infection colonized on the dentures of dependent elderly, suggesting that denture plaque may function as a reservoir of potential respiratory pathogens to facilitate colonization on the oropharynx.
Sumi
Y
Y
Department of Dental Surgery, The National Chubu Hospital, Morioka, Obu City, Japan. yasusumi@chubu-nh.go.jp
Miura
H
H
Sunakawa
M
M
Michiwaki
Y
Y
Sakagami
N
N
D000368:Aged; D000369:Aged, 80 and over; D001419:Bacteria / Q000145:classification*; D002175:Candida / Q000302:isolation & purification; D003773:Dental Plaque / Q000382:microbiology*; D003827:Denture, Complete, Upper / Q000382:microbiology*; D016972:Enterobacter cloacae / Q000302:isolation & purification; D005260:Female; D016330:Frail Elderly; D006801:Humans; D007711:Klebsiella pneumoniae / Q000302:isolation & purification; D008297:Male; D008875:Middle Aged; D009343:Neisseria / Q000302:isolation & purification; D012141:Respiratory Tract Infections / Q000382:microbiology*; D013211:Staphylococcus aureus / Q000302:isolation & purification; D013291:Streptococcus / Q000302:isolation & purification