A method of radiologic evaluation using a semiautomatic image analysis device was developed which permits a two-dimensional analysis of bony changes in time intervals. The objective reproducibility of the evaluation was determined in a control group of four patients without signs of periodontal changes. The standard deviation was 7%. The statistical analysis of the subjective range of radiologic interpretation showed a standard deviation of 9.1%. This method of radiologic evaluation was applied to control examinations of 20 patients with bone grafts. It was possible to carry out a percent and an absolute evaluation of the bony changes in time intervals.

Bone Transplantation↗

PubMed1978

[The mechanical effect of various types of tooth brushes on the alveolar mucosa and the gingiva (scanning electron microscopic studies)].

In animal experiments guinea pigs were subjected three times weekly for 4 weeks to cleaning with a plane multitufted or a toothed "space tufted" toothbrush for 20 seconds by a standardised method comparing opposing quadrants on each side. Scan electronmicroscopic evaluation of the tissue exfoliation from the area of attached gum before cleaning, after 2 and 4 weeks, shows that localised though different epithelial lesions occur with both tooth brushes. The lesions reach into the submucosa with the toothed type brush. Influence on the epithelium in the sense of normalising keratinisation after tooth brush massage could not be confirmed.

Animals↗

PubMed1978

[Wound management after periodontal surgery].

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Humans↗

PubMed1977

[Studies on the halfside comparison of heterotopic transplantation of mucosa with and without epithelium].

In patients with symmetric recessions in their canine and premolar regions, one side was supplied with an epithelium-containing and the other with an epithelium-free graft from the hard palate. Both sides were studied and compared. After six months, the size of the connective tissue transplants was reduced by 50% (that of the epithelium transplants by 0%). Within half a year, the width of the attached gingiva had decreased by 36% in the case of connective tissue transplants (epithelium transplants by 15%) and the vertical graft width by 60% (epithelium transpltnas 17%). Our clinical and histological findings suggest that grafting of heterotopic connective tissue transplants is not equal to epithelium-containing transplants.

Adolescent↗