One-year bond stability of self-etching primers containing different polymerization promoters

Objectives : In this study the addition of polymerization promoters to experimental self-etching primers on the bond stability of two-step adhesives to dentin was investigated.

Materials and methods : A model self-etching primer composed of phosphate acidic monomers, HEMA, ethanol and water was obtained. The polymerization promoters added to the primer were: none (control), camphorquinone (CQ), thioquixantone (QTX), diphenyliodonium hexafluorphosphate (DPIHPP), thiobarbituric acid derivative (TBAD) or sulfinic acid derivative (SAD). The bonding resin was composed of Bis-GMA, TEGDMA, HEMA, camphorquinone and amine. Microtensile bond strength testing to bovine dentin was carried out after 24 h or one-year storage in sodium azide solution, at 37 °C. Failure modes were classified under magnification (500×).

Results :

Nov 30, 2017 | Posted by in Dental Materials | Comments Off on One-year bond stability of self-etching primers containing different polymerization promoters
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