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Biomedical subjects

B Krasse

Publications and source records attributed to B Krasse.

At least 91 records · Page 5Linked to original sources
PubMed1977

Microbial and salivary conditions in 9- to 12-year-old children.

The prevalence of S. mutans and lactobacilli, the salivary secretion rate, and salivary pH and buffer capacity were examined in 655 children 9-12 years old. Some of these factors were correlated with the frequency of caries. Positive correlations were observed between for example S. mutans and lactobacilli, between S. mutans and incipient smooth surface caries, and between lactobacilli and open carious lesion. A high proportion of the children showed large numbers of S. mutans and lactobacilli.

Child↗
PubMed1976

A method for studying adherence of oral streptococci to solid surfaces.

The adherence of different streptococci to test pieces of glass, human enamel and whale dentin carried in the mouth or immersed in saliva or bacterial suspensions was studied by examining the number and frequency of microorganisms which were selectively desorbed by a standardized washing technique. The results obtained from in vivo and in vitro experiments were similar in principle. The proportion of streptococci obtained in the first washing resembled that found in the saliva, but with more vigorous washing the proportion of S. sanguis increased while that of S. salivarius decreased. This illustrates that different microorganisms can attach to solid surfaces with different strengths. The applicability of the method was tested by treating dentin surfaces with fluoride solutions and by incorporating sucrose in the test solution. The fluoride treatment reduced while the sucrose addition increased the number of streptococci which could be removed from the surfaces.

Bacteriological Techniques↗
PubMed1976

Effect of a fluoride-containing chlorhexidine gel on bacteria in human plaque.

The effect on the plaque flora of a fluoride-containing chlorhexidine gel in mouthpieces was studied in seven subjects. Use of the gel during a 3-month period resulted in a change in the pattern of sensitivity to cholorhexidine in the plaque flora as displayed by determination of the minimal inhibitory amount (MIA) of the drug in agar diffusion assays. Three months after the use of gel was discontinued, the MIA value for plaque bacteria had returned to its original level. The relative proportions of S. mutans and S. sanguis in plaque changed during the chlorhexidine period. Thus S. mutans could not be detected in plaque samples after 3-month use of the gel, and the frequency of S. sanguis was altered.

Adult↗
PubMed1976

Surface potential and adherence of oral streptococci to solid surfaces.

Strains of oral streptococci belonging to the same species but with different zeta-potential adhere with different strengths or become desorbed at different rates. However, strains of various species but with approximately the same zeta-potential also adhere differently. The adherence was found to be affected by the presence of polyvalent of counter ions in the microorganisms studied.

Adhesiveness↗
PubMed1969

[Protein and fat].

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Cariogenic Agents↗