Effect of thermocycling and varying polymerization techniques on the restorative interface of class V cavities restored with different composite resin systems

• Jefferson-Ricardo Pereira ^[1] ; Lindomar-Corrêa Júnior ^[2] ; Marcus-Vinicius-Reis Só ^[3] ; Newton-Fahl Júnior ^[4]
  1. [1] DDS, MSc, PhD, Department of Prosthodontics, University of Southern Santa Catarina, Tubarão, Santa Catarina, Brazil
  2. [2] DDS, Department of Prosthodontics, University of Southern Santa Catarina, Tubarão, Santa Catarina, Brazil
  3. [3] DDS, MSc, PhD, Department of Conservative Dentistry, Rio Grande do Sul Federal University, Porto Alegre, RS, Brazil
  4. [4] DDS, MSc, Newton Fahl Center, Curitiba, PR, Brazil

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• Localización: Journal of Clinical and Experimental Dentistry, ISSN-e 1989-5488, Vol. 9, Nº. 3 (Marzo), 2017, págs. 405-409
• Idioma: inglés
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• Resumen

  • To evaluate marginal microleakage of two composite resins - a methacrylate- and a silorane-based submitted to different polymerization techniques and thermocycling.

    Ninety-six class V cavities were prepared in sound human molars and restored under different polymerization and thermocycling regimens. The adhesive systems employed were Adper Scotchbond Multipurpose and Filtek P-90 for cavities restored with Z250 and P-90. The specimens were restored with Z250 or P-90, and divided into 3 subgroups with different polymerization techniques. The data were analyzed by Three way Analysis of Variance Test (p<0.05).

    Micro infiltration lower scores were found in groups which were used silorane-based resin with significant statistical difference compared with the specimens restored with methacrylate-based resin, independently of polymerization type used and thermocycling (P>0.001).

    Silorane-based composite resins present lower marginal microleakage values when compared to methacrylate-based composites resins.