Biomedical subjects
Publications and source records attributed to E M Sobkowiak.
Having dealt with the manufacture, application and mode of action of the pin element, the authors report of clinical and radiological findings (after six and twelve months) which they compare with corresponding results from the literature and experience gained with the treatment of apical periodontitis with iodoform paste. The paper ends with recommendations for practice.
In the present paper the authors report of the pulp tolerance, marginal adaptation, abrasive behaviour and discolouration of composites. Starting from these properties, they deal with indications, cavity preparation, pulp protection, enamel etching, processing and finishing. Finally, the composites are evaluated with reference to recent findings.
The present paper compares the incidence and intensity of caries (DMF caries index) determined on skulls from the Iron, Slavic, and Middle Ages with corresponding results obtained for a modern civilized population. More specifically, the results reported in this paper were obtained from clinical and roentgenological examinations of 371 skulls from the ages referred to above as well as of 10,340 inhabitants of the city of Rostock. The results indicate a marked increase in cariosity between the Iron Age and the present time. This increase in the incidence and intensity of caries is considered to be due predominantly to the abrasion resulting from the then preparation and composition of food (which contained as much as 3 percent of stone dust), whereby an essential point of predilection for caries is removed.
From a compilation of all investigative results it is apparent that there are only minor differences in edge-strength between the AP preparations and VH 67 grade. Showing the best values within this particular group is the AP 3 grade. Its use as a filling material may be expected to yield the best results as regards durability. In contrast, the results obtainded for the VH 50 grade material cannot be regarded as satisfying the requirements of a dental amalgam. A marked tendency toward creeping and high rates of corrosion result in the edge-strength of this material being reduced to an unacceptable level.
The author in his present paper reports the effects on dams and their young of the administration to twelve gravid rabbits of Otesolut and Terramycin (20 mg, 60 mg, and 100 mg per kilogram of body weight)
Experiments on animals (four-week-old dogs) were conducted in an investigation made to study the possibility of dose-dependent tooth-germ damage produced by ionizing radiation. The individual doses were 50 r and 200 r, respectively, and they were administered once to three times at weekly intervals. Hyperemia and edemata could be observed on tooth-germ pulps from 150 r onward. Both of these conditions became more acute as the radiation dose increased (from 150 r to 600 r). Possible damage to both the dentin and enamel is pointed out.
The explanation of the goal of pulp-periodontium treatment is followed by guidelines concerning the indication for the methods of pulp preservation (indirect capping, direct capping, pulpitis treatment by means of anaesthetics), of partial pulp preservation (vital amputation) and for pulpectomy (vital and non-vital techniques). The different passages of the paper terminate with conclusions for practice.
An explanation of the goal of filling therapy is followed by guidelines relevant to the indications for plastic fillings (silver-tin amalgam, silicate cement, composites) and inlays (metal and porcelain inlays) with special regard to the properties of the filling materials (colour, chemical and physical properties), the extension of the cavity and the condition of the pulp. Practice-oriented conclusions mark the end of the paper.
This paper deals with the caries intensity in the region of the lateral teeth and the present state-of-the-art of the filling therapy as evidenced by late results of silver-tin amalgam fillings and inlays. Various possibilities of quality improvement are discussed, and recommendations are given for practice.
The purpose of the present paper was to determine the time required for filling therapy. The authors deal briefly with the subdivision of time adopted for the present study. Conclusions as to planning in dental practice may be drawn from the results obtained only if values determined by different dentists are available for comparison.
On the basis of epidemiologic studies on 10 106 sugjects from the population of the town of Rostock, the authors deal with the frequency of filled tooth areas and their affection by secondary caries with special regard to filling materials (silver-tin amalgam, silicate cement, inlay). The low frequency of secondary caries in tooth areas restored by means of inlays is noteworthy. Finally, the authors give recommendations for practice.
On the basis of radiographic studies on animals (rabbits), the authors determined the beginning of bone and dental hard tissue calcification. First signs of ossification were observed on the 17th day after copulation, whereas the calcification of the incisors began only on the 19th day after copulation.
By way of introduction, the authors report the results from clinical and radiographic examination of teeth with inlays restorations. In view of further corroboration of the clinical results with modelcast inlays, the authors measured the marginal adaptation of inlays made of Goplat 203 and Sena 65, respectively. The difference in the average marginal adaptation between Goplat 203 and Sena 65 is insignificant, amounting to 3.6 mum in favour of the gold alloy, which permits to recommend Sena as a casting alloy for posterior teeth.
The present paper deals with the results of clinical and radiographic examinations of 1996 children from nurseries and nursery schools, performed for the purpose of disclosing the caries experience of the deciduous molars and of their surfaces (subdivided into occlusal, mesial and distal surfaces) with regard to age. In the children from nurseries, caries was mainly experienced by the occlusal surfaces. In the children from nursery schools, caries occurred both occlusally and proximally. As to the first deciduous molars, caries was experienced more often distally (35.9%) than mesially (11.7%). The reverse held true for the second deciduous molars (distally, 7.0%; mesially, 31.7%).
The report is on metric examinations of the thickness of the hard substance coating of the first upper milk molars based on 122 tooth cuts (longitudinal and transversal) and on the shape of the crowns of these teeth. The measurements were made by means of a stereomicroscope SM XX number 551 190 (VEB Carl Zeiss, Jena), and the results were statistically evaluated.
Explore the source record for details and available documents.