The calibrated periodontal probe is marked in various millimeters and has many functions in the periodontal evaluation. The probe tip can be a circular or rectangular cross-section. In the world health organization survey, the PSR probe has a small ball at the end of the probe, which can improve the patient's comfort. The probe handle can be flat, Angle can enter into the back area, or curve (Nabers furcation detector).
Most of the probes used to be made of stainless steel or carbon steel, but now many companies are providing plastic probes for implants and increasing the patient's comfort. Some plastic probes have pressure indicators that show clinicians under proper pressure. A group of colors that represent a certain number of millimeters has greatly improved visibility. The Nabers furcation detector is now also able to use color-coded band 3 mm intervals to make the probe easier to read.
The seeker has a flexible line work to terminate and transmit vibrations when the surface of the tooth is irregular. The accurate submarginal calculus test relies on the tactile sensitivity of the clinician, so that the seeker can complete the deposit. The development of an explorer like Gracey 11/12 curet has greatly improved the detection of calculus. The extended calf seeker was designed to enter the deep periodontal pocket
