VDW.GOLD® RECIPROC® - Vdw-dental.com

67Problem Possible Cause SolutionLENGTHDETERMINATIONDOES NOT WORK,as the electricalmeasurement circuitcannot be closed.• Calcified or obliterated rootcanal.• Extremely dry root canal.• Old root filling residuescreating a blockage/blockagethrough insufficient removal ofintracanal medicament(i.e. calcium hydroxide).• As separate length determination:File too narrow for largeroot canal.• Lip clip incorrectly hung inpatient‘s mouth.• As separate length determination:File incorrectly connectedto the file clip – i.e. actuallyconnected to the metal shaft.• Defective connection cable.• Check comparative X-rays for moreinformation. If necessary, catheterizeto working length with ISO 06/08 file.• Rinse with NaOCl solution; dryaccess cavity with cotton ball/airblower.• Do a comparative X-ray, andremove old gutta-percha/ intracanalmedicament completely.• Length determination/ removeintracanal medicament completely.• If there is no contact to the file clip,select a larger file.• Place the lip clip in the patient‘smouth again.• Check cable and socket connectionsagain.• As separate length determination:check whether the file and the fileclip are properly in contact with oneanother.• Clean the file clip using ethanol.• Check cables and sockets for visibledamage.enEndo Easy Efficient ®