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Dimensional change of impressions on sterilization
Author(s) -
Chia W. K.,
Stevens L.,
Basford K. E.
Publication year - 1990
Publication title -
australian dental journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.701
H-Index - 71
eISSN - 1834-7819
pISSN - 0045-0421
DOI - 10.1111/j.1834-7819.1990.tb03022.x
Subject(s) - tray , impression , sterilization (economics) , acrylic resin , disinfectant , volume (thermodynamics) , dentistry , materials science , composite material , chemistry , medicine , engineering , mechanical engineering , computer science , coating , physics , quantum mechanics , world wide web , monetary economics , economics , foreign exchange market , foreign exchange , organic chemistry
A bstract — The volume of impressions, before and after disinfection in a gluteraldehyde solution for longer than ten hours (that is, sterilization), was measured indirectly from dies produced from the impressions. Three elastomeric impression materials were used in both acrylic resin and poly‐vinyl‐chloride ‘trays’ to form the impressions. One impression material appeared to be practically superior to the others with respect to variability of volume. The effect of tray material on change in volume (calculated as after disinfection minus before disinfection) was significant for one impression material; acrylic trays produced the greatest effect. The change in volume was significant for two impression materials; acrylic trays were associated with greater increase in volume. It was concluded that if impressions are to be sterilized, a tray material having minimal potential to absorb disinfectant should be used.