[Comparative studies of the palatal mucosa under physiologic conditions and with removable dentures. II. The regional differentiation of epithelial layers].

On the basis of the morphological evidences of 22 adults with own teeth and 18 denture wearers a significant reduction of the thickness and the number of layers of the stratum granulosum could be established under dentures.

[Comparative studies of the palatal mucosa under physiologic conditions and with removable dentures. I. Epithelial height and papillary bodies].

Epithelium changes caused by wearing of tissue-borne prosthesis were established on the basis of tissue specimens, taken away from the palate of 22 corpses with own teeth and 18 edentulous corpses with removable prosthesis. The epithelium height of the denture supporting area was reduced especially in the lateral and ventral cuts. The papillary body was significantly reduced.

Age-induced changes in the oral mucosa and their therapeutic consequences.

The oral mucosa is subject to specific changes with increasing age but these do not by themselves impair the function and well-being of the patient. The dentist should, however, devote particular attention to the reactions of the oral mucosa when it has undergone age-induced changes, to the effects, extending over years and even decades, of foreign bodies such as prostheses and of other agents--in particular, smoking. Changes are brought about mainly by arteriosclerotic processes, the progressive obliteration of the capillaries and the reduction of cell metabolism.

[Investigations into ways of improving the ultimate strength of ceramic dental materials (author's transl)].

Despite major improvements, ceramic dental materials, as albite glasses, still show unsatisfactory strength properties. It has been found that the combination of Keradens type dentinal compounds with aluminum-oxide-containing core materials, because of internal stresses, results in a higher ultimate strength than is suggested by the strength values of the single components. In addition, it has been found that wetting the surface of the ceramic test specimen results in a significant decrease in ultimate strength.

[The arterial blood supply of the human mandible].

The arteries of 22 mandibles injected with Kallocryl M were examined. The first group consisted of mandibles with the full complement of teeth. At the inner side, there were numerous anastomoses between the submental artery, the sublingual artery, the ascending palatine artery and the mylohyoid ramus.