UltraSeal XT plus is a light-cured, radiopaque, pit and fissure sealant, making it stronger and more wear-resistant. Because it is a 58% filled resin, it has less polymerization shrinkage than competitive products. The spiral brush action of the tip causes shear thinning of the filled, thixotropic material, reducing viscosity as it’s placed. When used in conjunction with Ultradent’s PrimaDry (the priming and drying agent), microleakage is virtually eliminated, resulting in a significantly superior seal. For more information, call (800) 552-5512.