as defective; (b) the work of Local Mental Welfare Associations. I propose to make a few remarks, of necessity impressions only, first about (a) and then about (b). For the large urban area, with its population of over 50,000, the problem becomes comparatively simple: the special school is well known to all, especially in those districts where its nature is well advertised by a large noticeboar...

Members of the Society and guests. In 1951 when Mr Jackman was President of this Society, I as one of his dressers, was permitted to attend my first 'MedChi' meeting. I was overawed. The 'Med-Chi' was, after all, the premier postgraduate society of the City and far beyond. I remember how fascinated I was to observe the proceedings and to register the elegant eminence of the members. Little did ...

background and aims. the most common method for alginate impression disinfection is spraying it by disinfecting agents, but some studies have shown that these impressions can be immersed, too. the aim of this study was to evaluate the dimensional stability of alginate impressions following disinfecting by spray and immersion methods. materials and methods. four common disinfecting agents (sodiu...

objectives: this study aimed to evaluate the effect of storage period on dimensional stability of alginplus and hydrogum 5. materials and methods: in this in vitro experimental study, 60 impressions were taken of an upper jaw typodont, including 10 impressions for each storage period to be tested (12 minutes, 24 and 120 hours) for each type of alginate. then, the impressions were stored in an i...

some manufacturers claim to have produced new irreversible hydro-colloids that are able to maintain their dimensional stability during storage. the present study evaluated the effect of storage time on dimensional stability of three alginates: hydrogum 5, tropicalgin and alginoplast.in this experimental in-vitro trial, a total of 90 alginate impressions were made from a dentoform model using hy...

conclusions within the limitations of this study, disinfectants were able to completely eliminate microorganisms carried by the alginate impressions. however, more efficient disinfection methods are needed to eliminate the risk of cross contamination by condensational silicone impressions. background dental impressions often carry microorganisms that may cause cross-infection from patients to d...