Pearl 1
Click here to enlarge imageThis is not true with 4 Seasons; it is different since it is the only composite material that is an exact match of the Vita guide. There are 40 shades in the 4 Seasons system, but Ivoclar Vivadent has simplified the shades and made them more logical. There are only dentin and enamel shades rather than "body," "opaque," "semitrans," and so on. Once you have mastered the layering technique, you can get some amazing results.
I have been using this material for the past few months and have found it to have above-average handling characteristics. 4 Seasons is a little stiffer but easy to handle in all restorations, both anterior and posterior. The material does not stick to instruments or slump after you have placed it.
4 Seasons restorations may be placed using a traditional "shade layering technique" as you recreate the translucency, opacity, fluorescence, and value of natural tooth structure using the dentin and enamel shades. Or, try a simplified "anatomical technique" where you can recreate nature by overlaying a highly chromatic dentin shade with one of three new "value" shades, much as your lab builds porcelain restorations.
4 Seasons is much easier to learn than other materials I have used — it must be the logic! The shades seem to mimic natural tooth structure, allowing me to achieve outstanding aesthetic results. The small-particle, micro-hybrid chemistry provides excellent polishability, high strengths, and low wear in both the anterior and the posterior.
Call Ivoclar Vivadent at (800) 533-6825 or visit www.ivoclarvivadent.us.com for more information.