Influence of monomer type, plasticizer content, and powder/liquid ratio on setting characteristics of acrylic permanent soft denture liners based on poly(ethyl methacrylate/butyl methacrylate) and acetyl tributyl citrate

We evaluated the influence of monomer type, plasticizer content, and powder/liquid (P/L) ratio on setting characteristics light-cured acrylic permanent soft denture liners based poly(ethyl methacrylate/butyl methacrylate). Two monomers, iso-butyl methacrylate (i-BMA) 2-ethylhexyl (2-EHMA), that contained various concentrations acetyl tributyl citrate (ATBC) trace amounts photo initiator reducing agent were used. The P/L was 1.0 or 1.2. gelation time measured using a controlled stress rheometer. Materials with i-BMA had shorter times than those for materials 2-EHMA. increased exponentially increasing content. A higher led to time. effects type content larger ratio. These results show 2-EHMA is suitable can be via ATBC