Evaluation of the Effect of Monomer Systems on the Softening of a Composite Resin

  • Perea-Lowery L
  • Tolvanen M
  • Vallittu P
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Abstract

PURPOSE: To measure the softening via swelling of a composite resin by evaluating its surface hardness after the application of four monomer systems. MATERIALS AND METHODS: A total of 40 specimens made of a hybrid composite resin were evaluated. Four monomer systems were used as surface-conditioning primers during five exposure times. Surface microhardness measurements (n = 8) were made after application of the monomer systems. RESULTS: In all exposure times, Scotchbond Universal showed the highest influence on the composite resin surface softening (P < .05), followed by Stick Resin (P < .05). CONCLUSION: Surface softening of composite resins might be achieved with monomer systems, especially with Scotchbond Universal, which may have a positive influence when repairing aged composite resin restorations.

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Perea-Lowery, L., Tolvanen, M., & Vallittu, P. (2018). Evaluation of the Effect of Monomer Systems on the Softening of a Composite Resin. The International Journal of Prosthodontics, 32(1), 101–103. https://doi.org/10.11607/ijp.5692

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