TY - JOUR
T1 - Water Sorption and Solubility of Methacrylate Resin-based Root Canal Sealers
AU - Donnelly, Adam
AU - Sword, Jeremy
AU - Nishitani, Yoshihiro
AU - Yoshiyama, Masahiro
AU - Agee, Kelli
AU - Tay, Franklin R.
AU - Pashley, David Henry
PY - 2007/8
Y1 - 2007/8
N2 - The water sorption and solubility characteristics of three contemporary methacrylate resin-based endodontic sealers, EndoREZ, Epiphany, and InnoEndo, were compared with those obtained from Kerr EWT, Ketac-Endo (positive control), GuttaFlow, and AH Plus (both negative controls). Ten disks of each material were dehydrated in Drierite for 24 h and weighed to constant dry mass. They were placed in water and weighed periodically until maximum water sorption was obtained. The disks were dehydrated again to determine their mass loss (solubility) at equilibrium. Epiphany exhibited the highest apparent water sorption (8%) followed by Ketac-Endo (6.2%), InnoEndo (3.4%), EndoREZ (3.0%), AH Plus (1.1%), GuttaFlow (0.4%), and Kerr EWT (0.3%). Significantly higher solubility (3.5-4%) were observed for all three methacrylate resin-based sealers and Kerr EWT (3.95%), compared with Ketac-Endo (1.6%), AH Plus (0.16%), and GuttaFlow (0.13%). American Dental Association specifications require <3% solubility for endodontic sealers. Only Ketac-Endo, AH Plus, and GuttaFlow met that criterion.
AB - The water sorption and solubility characteristics of three contemporary methacrylate resin-based endodontic sealers, EndoREZ, Epiphany, and InnoEndo, were compared with those obtained from Kerr EWT, Ketac-Endo (positive control), GuttaFlow, and AH Plus (both negative controls). Ten disks of each material were dehydrated in Drierite for 24 h and weighed to constant dry mass. They were placed in water and weighed periodically until maximum water sorption was obtained. The disks were dehydrated again to determine their mass loss (solubility) at equilibrium. Epiphany exhibited the highest apparent water sorption (8%) followed by Ketac-Endo (6.2%), InnoEndo (3.4%), EndoREZ (3.0%), AH Plus (1.1%), GuttaFlow (0.4%), and Kerr EWT (0.3%). Significantly higher solubility (3.5-4%) were observed for all three methacrylate resin-based sealers and Kerr EWT (3.95%), compared with Ketac-Endo (1.6%), AH Plus (0.16%), and GuttaFlow (0.13%). American Dental Association specifications require <3% solubility for endodontic sealers. Only Ketac-Endo, AH Plus, and GuttaFlow met that criterion.
KW - Glass-ionomer
KW - hydrophilic methacrylates
KW - net water uptake
KW - polydimethylsiloxane
KW - root canal sealers
KW - solubility
KW - water sorption
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U2 - 10.1016/j.joen.2006.03.021
DO - 10.1016/j.joen.2006.03.021
M3 - Article
C2 - 17878090
AN - SCOPUS:34447562934
SN - 0099-2399
VL - 33
SP - 990
EP - 994
JO - Journal of Endodontics
JF - Journal of Endodontics
IS - 8
ER -