[The behavior of BAEE-lytic proteinases in the sulcus fluid in inflammatory periodontopathies].

The esterolytic activity of proteinases was measured in the gingival crevicular fluid from healthy and inflamed periodonts using BAEE as substrate. The BAEE-activity was significantly increased in crevices with inflamed periodonts.

[The behavior of trypsin-like proteases in sulcus fluid].

The present study shows results aimed at determining whether levels of a trypsin-like protease in gingival crevicular fluid are associated with disease activity as assessed by the level of gingival inflammation and probing attachment loss. Maximum enzyme level was significantly elevated by groups with gingival inflammation and periodontal destruction. In a long-time study we find a decrease of enzyme activity with clinical therapy by scaling and root planning.

[Toxicological assessment of amalgam components released in immersion tests].

After immersion of unpolished and polished high copper amalgam in saliva with different pH values for up to 12 weeks, the elements mercury, tin, copper, silver and antimony were analysed in the solution. Unpolished amalgam corroded more than polished amalgam. Corrosion increased with the time of immersion and the acidity of the solution.

[Representative epidemiologic study of influence factors on the periodontal loss of attachment].

The influence of age, inflammation intensity, tooth surface quality (caries, fillings), as well as mucogingival conditions on the loss of attachment was examined in 2000 probands. The loss of attachment was subdivided into periodontal pocket-formation and recessions. Determining cause is not the age but the inflammatory degree even if there is a significant increase of the attachment loss from age group to age group.

[Clinical evaluation of the amalagam restorations for cavities Class I and Class II. 3: Comparison between dental school and dental institutions in the community].

Comparison of conventional amalgam restorations produced either in dental college by students or in out-patient department showed that the portion of clinical acceptable restorations was higher at the college. The frequency of secondary caries was distinctively higher in the out-patient department (28.2%) than in the college (16.