Effect of powder-to-liquid ratio on the distortion of repaired denture acrylic resin.
The aim of this study was to determine the distortion of repaired autopolymerising poly(methylmethacrylate) (PMMA) resin. Eighteen rectangular test specimens with a 45-degree edge profile repair surface were repaired with autopolymerising PMMA using different powder-to-liquid (PL) ratios. None of the test specimens distorted during repair, although microscopical examination showed porosities which may have been due to polymerisation shrinkage. The results suggest that autopolymerising PMMA with various PL ratios can be used to repair fractured pieces of PMMA without affecting the distortion of the specimen.
Vallittu
P K
PK
NIOM Scandinavian Institute of Dental Materials, Haslum, Norway.
D003780:Denture Repair; D008422:Materials Testing; D008768:Methylmethacrylates / Q000737:chemistry*; D011108:Polymers / Q000737:chemistry
D008768:Methylmethacrylates; D011108:Polymers