Composite Placement DE TiN Double Paddle #7 DuraLite ColorRings. Nordent composite placement instruments are Titanium Nitride coated. Titanium Nitride coating increases the surface hardness of instrument tips to reduce abrasion and eliminate “pull-back” when manipulating composite materials for a smoother, more accurate restoration in less time. Curved blades conform to tooth anatomy for quicker, more accurate restorations. The ultra-thin, flexible blades provide exceptional interproximal access. The blades are ideal for Class V restorations.