Reliability and safety of the voltage gradient method of root canal measurement

• Published in: Journal of endodontics Vol. 10; no. 11; pp. 532 - 537
• Main Author: Ushiyama, Junji
• Format: Journal Article
• Language: English
• Published: United States Elsevier Inc 01.11.1984
• Subjects: Animals; Cattle; Dental Pulp Cavity - anatomy & histology; Dental Pulp Cavity - physiology; Dentistry; Dogs; Electric Conductivity; Endodontics - instrumentation; Mandibular Nerve - physiology
• ISSN: 0099-2399; 1878-3554
• DOI: 10.1016/S0099-2399(84)80138-7

A recently reported method for locating the apical constriction and foramen utilizes the principle that current density through the electrolyte-filled canal is highest at the narrowest point and the conformation of the electric field changes suddenly at the apical foramen. The reliability and safety of this method were determined using severed bovine mandibles and anesthetized dogs. In the animal models, it was found that this method is reasonably accurate and possesses a high degree of safety. Un método dado a conocer recientemente para localizar el foramen y la constricción apical se basa en el principio de que la densidad de corriente que atraviesa el conducto Ileno con un electrolito es más alta en el punto más estrecho y la conformación del campo elétrico cambia repentinamente a la altura del foramen apical. Las pruebas para determipar la confiabilidad y seguridad de este método fueron Ilevadas a cabo y demostraron que el mismo es razonablemente preciso y posee un alto grado de seguridad.