Jeffcoat M K, Jeffcoat R L, Jens S C, Captain K
J Clin Periodontol. 1986 Apr;13(4):276-80. doi: 10.1111/j.1600-051x.1986.tb02222.x.
A new automated periodontal probe has been developed which measures attachment level relative to the cemento-enamel junction in a single measurement. The probe tip automatically enters the periodontal pocket and retracts under controlled force. As the probe tip transverses the cemento-enamel junction, the electronics detect an alteration in the acceleration of the probe tip. Thus, the location of the cemento-enamel junction is determined automatically. The repeatability and accuracy of the probe was assessed in vitro. Measurements of attachment level were repeatable to 0.03 mm, and the probe had a net accuracy of 0.04 mm.
