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Undercut reproducibility of functional impression materials (tissue conditioners)
Author(s) -
MCCARTHY J. A.,
MOSER J. B.
Publication year - 1978
Publication title -
journal of oral rehabilitation
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.991
H-Index - 93
eISSN - 1365-2842
pISSN - 0305-182X
DOI - 10.1111/j.1365-2842.1978.tb01246.x
Subject(s) - tray , undercut , impression , dentistry , materials science , biomedical engineering , ridge , orthodontics , composite material , computer science , mechanical engineering , medicine , engineering , geology , paleontology , world wide web
Summary Impressions of, a laboratory model of an edentulous ridge were made with three commercial tissue conditioners (FITT, Hydro‐Cast and Coe‐Comfort). Combinations of undercut dimensions and tray relief were tested by using three different sized trays with each tissue conditioner. Greater tray relief increased the accuracy of all materials tested; increasing ageing time from 7 to 24 h resulted in little change of accuracy of the stone models poured from the impressions taken.