Related Experiment Video
Updated: Aug 7, 2026

Accessing the Cytotoxicity and Cell Response to Biomaterials
Published on: July 8, 2021
The effect of disinfection on irreversible hydrocolloid and type III gypsum casts
Syed Mohammed Aun Hussain1, Christopher J Tredwin, Michael Nesbit
1University College London, Eastman Dental Institute.
Abstract:
Under standardised conditions, 80 impressions were made of a ruled stainless steel die (ISO Specification 1563) using irreversible hydrocolloid (alginate). The alginates were subsequently treated with 3 commercially available disinfectants, Perform-ID, ImpressiVand Dimenol and poured with type III gypsum. The alginates were evaluated for surface detail reproduction and the gypsum for surface detail reproduction and hardness. Disinfection with Perform ID significantly affected the surface detail reproduction of alginate while Dimenol and ImpressiV did not. Perform ID and Dimenol both significantly affect the hardness of poured type III gypsum casts while ImpressiV did not.
Related Concept Videos
Hydration of Cement
Curing of Concrete
Hand hygiene
Hand washing...
Types of Cement I
Type I (Ordinary Portland Cement) is widely used for general construction where special properties are not required. It has moderate sulfate resistance and heat of hydration.
Type II (Modified Cement) offers moderate resistance to sulfate attack and a lower rate of heat development compared to Type I. It is suitable for structures in...
Effect of Sea Water on Concrete
Concrete in areas between tide marks, which undergo...
Strength and Heat of Hydration
The heat of hydration for each cement compound is significant; for instance, tricalcium aluminate (C3A) and...

