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The clinical adhesiveness as expressed by the critical surface tension and roughness of an acid etched tooth surface was studied as a function of time; from time of acid »conditioning« and at selected time intervals up to seven days. The critical surface tensions of the tooth surface were...
In an attempt to find an explanation for an experimentally found strong connection between the extension of the loaded area and the load required for fracture, an analysis of the diametral compression test was carried out by means of the finite element method. The distribution of the stresses in...
An investigation was conducted to determine the clinical adhesiveness of some commonly used dental materials. Contact angle measurement data, obtained under clinical conditions, were used to calculate the in vivo -critical surface tensions for enamel, gold, stainless steel, and a resin polymer....
The ability of light-bodied elastomeric and reversible hydrocolloid impression materials to spread on a surface was studied in vitro. The material which most readily coated the surface was a polysulfide, followed by silicone, hydrocolloid, and polyether materials. The influence of surface energy...
The etiology of root resorption subsequent to replantation of incisors was examined in green Vervet monkeys. Cell damage to the root surface due to the extraction procedure was registered histologically 1 week after replantation. The topographical distribution of cell damage was then related to...
Oxygen inhibits radical polymerization, and for the present investigation, the thickness of the resulting unpolymerized surface layer on various proprietary dental polymers was measured by a microscopic technique. The inhibition depth of the polymerized resins varied from 7 to 84 μm. Resin...
The effect of limited drying or removal of the periodontal ligament upon periodontal healing after replantation of incisors was studied in green Vervet monkeys. All teeth were examined histologically either 2-, 4- or 8 weeks after replantation. The drying experiment demonstrated that an area of...
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