Curette Gracey GripLite Root Plane 5/6 Curettes have rounded ends and are used to remove stains, supragingival and subgingival calculus and plaque, and used in root planing. These dental instruments can be either single or double ended. Universal curettes are designed to work in all areas of the mouth; other types of curettes are designed to adapt to specific areas such as anterior, posterior or buccal/lingual surfaces. Miltex is known worldwide as the premier manufacturer of fine surgical instruments.