Unlike amalgam, the difficulty of condensing composite presents us with the challenge, recreating a tight interproximal contact. May be more importantly, trimming composite that has been extruded beyond the preparation margin around an interproximal box is difficult, frustrating and unpredictable. So in a quest to minimize the amount of trimming we need to do with high-speed instrumentation after the composite is cured. Recreating the natural tooth shape and sealing the walls begins with the matrix. A matrix system must do the following three things: Recreate the natural tooth shape and interproximal contact Seal the proximal and gingival walls of the prep Overcome the thickness of the band. On the market today are both plastic and metal matrix bands. They are available in a variety of thicknesses and delivery systems that include sectional matrix bands, circumferential systems and bands that require a holder. Here, we present the NS matrix system which is a highly effective and economical matrix system that can be used for a variety of clinical applications, including posterior and anterior restorations. How to cite this article Sharma NS, Shrivastav SS, Hazarey PV, Kamble RH, Sharma PN. The NS Matrix System. World J Dent 2013;4(1):4-5.
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