EnDrive

EnDrive is a battery-operated electronic medical device used for the treatment of root pulp infection, which allows root canal preparation by means of continuously or alternately rotating endodontic instruments with torque control, or retreatment of an already treated tooth, with integrated apex locator. We can identify two different functional principles: one is the motor function which serves to shape the root canal, the other is the apex locator function to determine the apex approach when the file is in the root canal. The motor function, when the file has a movement transmitted from the motor through the contra-angle, allows the proper shaping of a root canal with infected pulp through rotary or reciprocating movement, helping to remove debris and infected tissue from the canal. The motor, controlled in speed and torque, uses brushless DC technology with 3 phases and 3 Hall sensors, driven by an embedded software. The apex locator function allows to determine when, during an endodontic treatment, the tip of an endodontic instrument, in steel or nickel-titanium, inserted by the dentist inside the root canal, is at the apex of the canal. Two electrodes are applied to the patient, a lip clip on the lip and a file clamp to the endodontic instrument positioned inside the canal (see figure below → same signal can be transmitted as well through the motor to the tip during the canal shaping). When the device signals the apex has been reached, the dentist positions the instrument stopper on the dental crown and indirectly goes to measure the working length of the canal using a ruler for endodontic instruments, so the length from which he must remove the infected pulp.