Color stability of three composite resins used in the inlay/onlay technique

Abstract – The color stability of three composite resins used in the inlay/onlay technique was determined by means of irradiation with UV-light and by water storage. Generally, water storage resulted in greater changes in color than did UV-light, but no correlation was found between the results of the two chromogenic procedures. The microfilled composite resin was the least color stable material, but none of the resins had alarmingly low color stability.     

Hepatic Changes Produced by 30-Day Administration of a Novel Aminocyclitol Antibiotic, Trospectomycin Sulfate, to Laboratory Animals

Hepatic Changes Produced by 30-Day Administration of a NovelAminocyclitol Antibiotic, Trospectomycin Sulfate, to LaboratoryAnimals. ULRICH, R. G., PETRELLA, D. K., LARSEN, E. R., COX,J. W., CRAMER, C. T., PIPER, R. C, AND GRAY, J. E. (1990). Fundam.Appl. Toxi-col. 14, 60–70. The studies described herewere done to characterize the hepatic response to a new aminocyclitolantibiotic, trospectomycin sulfate, administered intravenously(beagle dog) or subcutaneously (Sprague-Dawley rat) at a varietyof dose levels, to investigate reversibility of observed changes,and to document any untoward effects of subchronic trospectomycinsulfate administration. Both species showed significant elevationsin serum levels of alanine and aspartate transaminases in higherdose groups. In the dog only, a transient neuromuscular blockadewas also observed within higher dose groups. No other functional,morphological, or serum chemical changes were observed. Examinationof liver by electron microscopy revealed the presence of cytoplasmiclamellar inclusion bodies, concentrated in the bile canalicularregion of the hepatocytes. Occurrence of the lamellar bodiesand coincident transaminase increases were found to be reversibleupon discontinuance of treatment (studied in the dog). Electronmicroscopy of acid phosphatase cytochemistry in the rat indicatedthat most, but not all, of the lamellar bodies contained thisenzyme. This observation suggests that they may be derived fromthe lysosome, or once formed become lysosomal.     

Deinstitutionalization and the 'long-term mentally ill': a Swedish case study

We discuss deinstitutionalization and the question of how ‘long-termmentally ill’ persons adjust to life outside institutions.An interview survey was conducted in 1990 with 61 persons whohad been discharged to the community from a mental hospitalin the County of Värmland, Sweden during the 1980s afterat least five years inpatient care. The question of accommodationwas solved for all the interviewees prior to discharge and allnow live in modern apartments. Each discharge was preceded byan individual plan. The majority of the 61 ex-patients stillhad contact with psychiatry in some form but only 19 had beentreated in inpatient psychiatric care since they were discharged.While the ex-patients' material standard of living was satisfactory,the situation with respect to the occupation and fellowshipwas not. The need for intermediate forms of individually adaptedoccupation and supportive housing conditions is discussed.