An apical foramen locator that a dental or medical practitioner can use to quickly and accurately identify the location of a patient's apical foramen during a dental/medical procedure is provided. The apical foramen locator determines the location of the apical foramen relative to a tool inserted into...http://www.google.com/patents/US6845265?utm_source=gb-gplus-sharePatent US6845265 - Systems and methods for locating a tooth's apical foramen
