Designed to create tight, anatomical contacts on class II composite restorations. The contoured Slick Bands XR™ sectional matrix bands create proper tooth anatomy and eliminate sticking, while the rings create the required tooth separation and band adaptation for a tight, natural contact. Both the Soft-Face™ 3D-Ring and the 3D XR™ ring adapt to the contours of the tooth to nearly eliminate flash. The 3D XR™ ring grabs the teeth to eliminate "Spring-Off" and is ideal for small, malpositioned teeth or between canines and premolars.