Perineural hematoma may result in nerve inflammation and myelin damage.

Background And Objectives: Perineural hematoma may occur during performance of peripheral nerve blocks. The aim of this study was to test the hypothesis that an iatrogenic hematoma in the immediate vicinity of a peripheral nerve may cause histologic evidence of nerve injury.

Methods: Fifty milliliters of autologous blood was injected adjacent to the right sciatic nerve in 20 anesthetized female pigs.

[The development of the deciduous dentition under the influence of differently shaped pacifiers].

Intending to perform a prospective study after the birth of their children 312 mothers were asked for co-operation and a newly developed preventively shaped pacifier was given them (free of charge) for use. Two years later it was possible to join 202 children and morphologically investigate their primary dentition. On the base of the real behaviour in the meantime the subjects formed five groups: children without sucking habits, finger suckers, user of cherry-shaped pacifiers, so-called health pacifiers and test pacifiers.

The total surface and number of occlusal contacts in the static and dynamic occlusion of the teeth. Development of the methods.

For reasons of different data in literature on occlusal parameters and their metric registration at the beginning of the eighties two methods, independent from each other, were developed to registrate the total occlusal contact area and the number of occlusal surfaces of contact on dental casts--the capacity measuring method and the quasi-planimetry method. The results obtained independently from each other show a high degree of correspondence. Because of its easy handling the method of quasi-planimetry was further developed and used for direct analysis of enorally obtained wafers of different characteristics.

Findings of dentitions whose orthodontic treatment by removable appliances with and without extractions was ended about 23 years ago.

Out of a total of 300 patients the data of which and the dental casts including a control cast after an interval of 3 years were completely available, 56 patients could be investigated after an interval of about 20 years. When obtaining the last impressions they were aged 38 1/2 years. All casts were estimated and evaluated according to the method of Eismann (1969).

[The development of methods for the objective assessment of occlusal parameters].

For reasons of different data in literature on occlusal parameters and their metric registration, at the beginning of the 80's two methods independent of each other were developed--the capacity measuring method and the quasiplanimetry method to register the total occlusal contact area and the number of occlusal surfaces of contact at dental casts. The results obtained independently from each other showed a high degree of correspondence. That's why the method of quasiplanimetry was further developed and used for the direct analysis of enorally obtained wafers of different characteristic.