Effect of surface preparation on the failure load of a highly filled composite bonded to the polymer-monomer matrix of a fiber-reinforced composite

Journal of Prosthodontics : Official Journal of the American College of Prosthodontists
Hiroshi ShimizuYutaka Takahashi

Abstract

The purpose of the present study was to evaluate the effect of surface preparation on the maximum fracture load value of a highly filled composite bonded to the polymer-monomer matrix of a fiber-reinforced composite. A polymer-monomer matrix was made by mixing urethane dimethacrylate and triethyleneglycol dimethacrylate at a ratio of 1:1 with camphorquinone and 2-dimethylaminoethyl methacrylate as a light initiator. The matrix was then polymerized in a disk-shaped silicone mold with a light-polymerizing unit. The flat surfaces of the polymer-monomer matrix disk were prepared in one of the following ways: (1) without preparation; (2) application of silane coupling agent; or (3) application of matrix liquid and prepolymerization. A highly filled composite material was applied and polymerized with a light-polymerizing unit. Additional test specimens made entirely of the polymer-monomer matrix were fabricated as references; the disk and cylinder were fabricated in one piece using a mold specially made for the present study (group 4). Half the specimens were thermocycled up to 10,000 times in water with a 1-minute dwell time at each temperature (5 degrees C and 55 degrees C). The maximum fracture load values were determined using a ...Continue Reading

References

Nov 1, 1994·The Journal of Prosthetic Dentistry·A G Andreopoulos, G L Polyzois
Oct 14, 2003·Journal of Dentistry·A TezvergilP K Vallittu
Nov 14, 2006·The Journal of Prosthetic Dentistry·Seicho Makihira, Shinsuke Sadamori

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Citations

Oct 19, 2013·Journal of the Mechanical Behavior of Biomedical Materials·Anna Lucia MorresiAnnalisa Monaco

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