This document summarizes different types of periodontal instruments and their uses. It describes probing instruments used to measure pocket depths. Scaling and root planing instruments include curettes, sickle scalers, files, chisels and hoes used to remove calculus and alter cementum. Ultrasonic and sonic instruments are used for cleansing, polishing and curettage. Cleansing and polishing instruments include rubber cups, brushes, dental tape and air-powder abrasive systems. Surgical instruments like knives, blades, elevators, forceps and scissors are used in periodontal surgery procedures.