The document discusses the use of a universal curet for removing calculus. It begins by stating the learning objectives, which are to identify the parts, functions, and design of a universal curet and demonstrate its proper adaptation. It then describes the unique design of the universal curet, including its rounded back, rounded toe, semi-circular cross-section, and two cutting edges. It discusses techniques for recognizing the working end and adapting the curet to remove calculus from both posterior and anterior teeth. The document concludes by providing a video link demonstrating proper use of the universal curet.