background hygiene and maintenance of removable prostheses are very important for the oral health. elderly patients are not capable of this affair since they might have diseases in addition to being old; thus, they require new alternative methods. objectives the purpose of this study was to compare the disinfecting effects of three substances, water, normal saline and denture cleaning tablets c...

et al,' in which the authors demonstrated an altered character in the small bowel's bacterial flora in patients with rheumatoid arthritis. However, the authors did not demonstrate the presence of bacterial overgrowth. The syndrome of bacterial overgrowth is characterised by diarrhoea with malabsorption. The mechanism by which the bacterial overgrowth causes symptoms is not known. These symptoms...

More than 700 bacterial species inhabit oral cavity of humans. Various oral diseases are related to changes in the structure of this complex community. Their pathogenesis can, thus, be better understood by study of oral microbial flora. As many bacteria are refractory to cultivation, molecular approaches based on PCR followed by downstream analysis are more suitable for community analysis than ...

Photodynamic therapy (PDT), also known as photoradiation therapy, phototherapy, or photochemo therapy, involves the use of a photoactive dye (photosensitizer) that is activated by exposure to light of a specific wavelength in the presence of oxygen. The transfer of energy from the activated photosensitizer to available oxygen results in the formation of toxic oxygen species, such as singlet oxy...

Oral microbial flora refers to the population of microorganisms that inhabit skin and mucous membrane of the oral cavity of the normal healthy persons. The microbial cells in a human body outnumber the total number of cells in the human body 10 folds. The mouth harbors a diverse, abundant and complex microbial community on varied surfaces of the oral cavity including both hard and soft oral tis...

Photodynamic therapy (PDT), also known as photoradiation therapy, phototherapy, or photochemotherapy, involves the use of a photoactive dye (photosensitizer) that is activated by exposure to light of a specific wavelength in the presence of oxygen. The transfer of energy from the activated photosensitizer to available oxygen results in the formation of toxic oxygen species, such as singlet oxyg...

In order to improve the bioleaching efficiency of arsenic-rich gold concentrates, a mixed bacterial flora had been developed, and the mutation breeding method was adopted to conduct the research. The original mixed bacterial flora had been enrichedin acid mine drainage of Dexing copper mine, Jiangxi Province, China. It was induced by UV (ultraviolet), ultrasonic, and microwave, and their combin...

The bacterial flora associated with certain common abnormalities of the female genital tract were studied. The abnormalities included were trichomonal infestation of the vagina, the epithelial inflammation and cellular atypia associated with protozoal infestation, and erosions of the cervix. Trichomonas vaginalis infestation and marked epithelial inflammation were associated with a very varied ...

BACKGROUND Aspiration pneumonia has been a growing interest in an aging population. Anaerobes are important pathogens, however, the etiology of aspiration pneumonia is not fully understood. In addition, the relationship between the patient clinical characteristics and the causative pathogens in pneumonia patients with aspiration risk factors are unclear. To evaluate the relationship between the...

The science of oral microbiology is in a period of change from the era of bacterial cultivation to an era of molecular genetic methods and techniques. Already a significant body of new knowledge exists with regard to the oral flora in health and disease. Inevitably, this new knowledge has led to a better understanding of many oral diseases. In endodontics, the prevailing concepts are still to a...