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Biomedical subjects

K H Rateitschak

Publications and source records attributed to K H Rateitschak.

At least 37 records · Page 2Linked to original sources

Correlations among Papilla Bleeding Index, other clinical indices and histologically determined inflammation of gingival papilla.

The Papilla Bleeding Index (PBI) was measured on 95 interdental papillae, after which the results were compared to Sulcus Bleeding Index (SBI) scores, sulcus fluid (SF) amounts and pocket depth (PD) measurements. In 52 of the papillae, a histological evaluation of the degree of inflammation was also made, in which not only the expanse of the infiltrate but also its intensity were of interest. The PBI was positively correlated with all of the other clinical indices. Obvious and highly statistically significant correlations were demonstrated among PBI, SBI and SF. In contrast, between PBI and PD, and between SBI and PD, only weak correlations were found. The comparison of the PBI with the histological determination of inflammation revealed a clear increase in the absolute amount of inflammatory infiltrate as PBI scores increased. In addition, there was a definitive shift in the intensity of the infiltration; moderate and severe areas of infiltration became more common as PBI scores went up.

Adolescent↗

Influence of eating frequency upon plaque formation and periodontal bone loss.

The normal oral flora of weanling Osborne-Mendel rats was suppressed with penicillin, then bone resorption was induced in the test group by inoculation with Actinomyces viscosus Ny 1. In the control group the oral flora was suppressed with erythromycin. A programmable feeding machine forced the rats into extremely varied eating frequencies. Rats which ate less frequently than normal exhibited significantly less bone loss. Frequent eating was correlated with elevated plaque accumulation. AVIS-inoculated animals exhibited significantly (P less than 0.001) more plaque than antibiotic-treated rats. Both inoculated as well as non-inoculated animals exhibited significantly more plaque (P less than 0.001) when fed 28 times per day, in comparison to all other feeding schedules. AVIS-inoculated animals exhibited significantly (P less than 0.001) more bone loss than the antibiotic-treated rats. Inoculated animals which were fed only seven times per day exhibited significantly (P less than 0.05) less bone loss than similarly inoculated animals fed more frequently. Bone loss in the antibiotic-treated animals was independent of feeding frequency. Among the other feeding frequencies (14 and 28 x/day, and ad libitum), there were no significant differences either in AVIS-inoculated or in antibiotic-treated animals.

Alveolar Process↗