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Biomedical subjects

W Wiedemann

Publications and source records attributed to W Wiedemann.

45 records · Page 3Linked to original sources
PubMed1979

[Comparative studies of the hardness of dental calculus after the use of 2 dentifrices].

A method was described for recording the mechanical characteristics of tartar using objectively comparable test data. This method was used to study tartar which had formed when different tooth pastes were used. The results of this study indicate that 1. Tartar formed when different tooth pastes are used may exhibit different characteristics; 2. The dynamic measurement of indentation is suitable for quantitative determination of the mechanical characteristics of tartar. These mechanical characteristics have not been ascertainable until now.

Biomechanical Phenomena↗
PubMed1979

[Dental studies on the protective effect of breast feeding].

The frequency of disease for children who were breast fed as babies is lower than that for children who were bottle fed. Breast milk contains specific and nonspecific proteins which act against pathogens. The influence of breast milk on the development of juvenile periodontitis was examined. It was shown that, out of 55 children raised on bottle milk, 9 children up to 14 years of age showed inflammatory changes in the gingiva while only 1 child out of the 17 fed with breast milk during the first few months of life had gingivitis. The lower frequency of gingivitis can probably be explained by the immunopathology of periodontitis.

Breast Feeding↗
PubMed1978

[Photogrammetric studies on the degree of swelling in the inflamed gingiva].

A photographic method was described with which changes in the swelling of the gingiva can be objectively determined. During exposure of the film, the flash device projects vertical lines on the teeth and gingiva. These lines are photographed with a compact camera which the subject holds with his teeth over a separate occlusion template. Increased swelling of the gingiva was demonstrated in eight subjects during an observation period of 21 days in which no oral hygiene was carried out.

Gingivitis↗
PubMed1978

[Experimental gingivitis--a photogrammetric comparative study].

Inflammation of the gingiva was induced in 29 subjects ranging in age from 20 to 29 by discontinuing all forms of oral hygiene for three weeks. The course of the inflammation was followed during the developmental period and the following therapy phase with the PMA index, the plaque index, and monophotogrammetry. The results tend to indicate that gingival swelling develops more gradually and recedes more rapidly after treatment has been instituted than could be assumed from the current standard periodontal indexes.

Adult↗
PubMedDate not supplied

A comparison of plaque removal effectiveness of an electric versus a manual toothbrush in children.

The purpose of this study was to test the plaque-removing efficacy of an electric brush (Philips HP550) in comparison with a manual brush (Butler Gum 111) in five- to ten-year-old uninstructed children. The sample included twenty-three children who were divided into two groups, each group brushing for four weeks with the assigned brush at home. After this period children were asked to brush for two minutes in a dental clinic. Plaque was scored according to the Turesky modified Quigley and Hein Index before and after brushing. Analysis shows that plaque reduction with the electric brush is significantly better than with the manual brush: 46 percent versus 25 percent reduction, respectively. Results are most marked for the lingual posterior areas. Results further indicate that using an electric brush, plaque is reduced more evenly over the dentition. Participants without previous experience with powered toothbrushes showed no problem in adapting to the electric brush.

Analysis of Variance↗