Probes are diagnostic instruments used to assess periodontal pocket depths, attachment levels, anatomy configurations and gingival bleeding. Millimeter measurements may be cut into the probe tips or are marked with color-coded lines.

A periodontal probe is an instrument in dentistry commonly used in the dental armamentarium. It is usually long, thin, and blunted at the end. Its main function is to evaluate the depth of the pockets surrounding a tooth in order to determine the periodontium 's overall health.

Probe is a tapered, rod like instrument calibrated in millimeters with a tip, in case of periodontal probe the tip measures 0.5mm. The probe is made up of 3 parts Handle, Shank and Working end. When the probe is inserted into the pocket for examination a firm and gentle pressure to the bottom of the pocket is applied.