[Temperature measurements in the pulp chamber during onlay and inlay preparation]. / Temperaturmessungen im Pulpakavum während der Onlay- und Inlaypräparation.

The effect of fast turning burrs and diamond points upon teeth during cavity preparation was tested in a model experiment under laboratory conditions, in order to establish possible damaging effects upon the pulp through an increase in temperature. The most effective protection comes from water cooling. Also successful was the technique of intermittent instead of continuous preparation. Only methods currently used in practice were tested thus making the test particularly valuable to daily practice. Thus it could be proved that the use of super-torque airotors as well as of the micromotor cannot cause thermic damage to the pulp if used circumspectively.

[Teratological aspects of CaF2 medication]. / Teratologische Aspekte einer CaF2-Medikation.

CaF2 was studied in animal experiments to determine its effect over a period of several generations. The negative effects of AcF2 on embryogenesis increase as the dosage is increased. The effects however are slight compared with other fluorides.

[Comparative SEM study of root canals prepared with Intraendokopf 3-LDSY and 3-LD]. / Vergleichende REM-Untersuchung nach Wurzelkanalaufbereitung mit den Intraendoköpfen 3-LDSY und 3-LD.

A total of 211 root canals were prepared in extracted teeth using either hand instruments or two engine-driven instruments (KaVo Intraendokopf 3-LDSY and 3-LD). The teeth were investigated by light and scanning electron microscopy. The best results in terms of smoothing the canal wall were observed in the teeth prepared with hand instruments. The Intraendokopf 3-LD was found to be useful in supporting manual methods in certain limited cases, such as curved narrow canals which are hard to access. 3-LDSY, however, proved to be less efficient because it tended to bind in the canal so that the full working length could not be reached.

[Neuropathy of the gingival autonomous nerve system in inflammatory diseases of the periodontium. Ultrastructural analysis]. / Neuropathie des autonomen Nervensystems in der Gingiva bei entzündlichen Parodontopathien. Eine ultrastrukturelle Analyse.

In a comparative study the influence of periodontal disease on the autonomous nerve-system of human attached gingiva was analysed ultrastructurally in 20 gingiva specimens. The test group was formed by 10 patients with adult periodontitis (AP) and compared with 10 patients with clinically healthy gingiva. The specimens were prepared for ultrastructural evaluation. The autonomous nerve fibres near the epithelium, in the connective tissue, and at the blood vessels were qualified and quantified by means of electron microscopy. In the test group clear signs of neuropathy of the autonomous nerve system like lysis of axoplasm, evagination of axons from their Schwann's sheaths, de- and regeneration pistons and reduction of axons were found. The possible pathogenic significance of this neuropathy of the autonomous nerve system in periodontal disease is discussed.