The LightSpeed system

This article describes the use of an innovative, engine-driven, rotary, root canal preparation instrument. The geometric design of this nickel-titanium instrument is totally different from currently marketed manual or engine-driven stainless steel or nickel-titanium instruments. The thin, taperless, noncutting shafts of LightSpeed instruments maximize the flexibility of the nickel-titanium alloy, particularly in the larger sizes. The three different methods for using the LightSpeed cutting heads and three different methods for using the LightSpeed system are described. LightSpeed instruments enable larger apical preparations in curved canals with less coronal flaring than is possible with most other techniques.