Incorporation of an Ultra High Molecular Weight Polyethylene to Decrease the Shrinkage Stress of a Resin Composite

Objectives: Evaluate shrinkage stress of an experimental resin composite incorporating ultra-high-molecular-weight polyethylene (Utec)
Methods: Experimental resin composite were prepared with Bis-GMA 22,75%, Tegma 10,24%, CQ 0,20% DMAEMA 0,19%, BHT 0,10% Inorganic load 65%, and modifies its UTEC en 1,5% y 3%, all components were homogenised in a SpedMixer, with 2400 rpm for 15 s in 4 cycles, with n = 5 were taken to a universal testing machine to perform stress test contraction.
Results: It was performed an analysis of the different groups surface where it can be seen that the higher percentage of materials incorporated Utec, greater shrinkage stress, finding better results with 1.5% UTEC.
Conclusions: Incorporating UTEC 1.5% has decreased shrinkage stress in experimental resins.