NSK America’s NLZ Electric Micromotor systems offer new technology, faster performance, compact design, and a new proprietary contra angle check function, according to the company. The NLZ has the highest torque in its class at 4.2 Ncm, the company reports, with the smallest dimension. The NLZ E, which is the endodontic version, has both a reciprocating and a rotary function, making it compatible with Dentsply Sirona’s WaveOne files.
The NLZ is more powerful yet lighter with less heat generation than NSK’s previous models, the company says. The conventional magnet rotor has been replaced with an improved magnet rotor for more powerful rotation. The unique water and air lines are now integrated with the motor to make maximum use of the space. Using a simple, non-layered coil, the NLZ is as compact as possible, shortening the pathway for heat-generating current. As a result, it generates less heating without reducing power.
A new installation style separates the control unit from the main unit. Every part of the NLZ has been made more compact to minimize the required space for installation. The main unit (146 by 75 by 48 mm) fits under the counter, keeping only the control unit (76 by 87.1 by 63.4 mm) visible.
Generally, heads on electric attachments may overheat during treatment, mainly due to deterioration of the gears and lack of proper maintenance. But these features are hard to check prior to use, meaning the problem first emerges when the attachment is used.
NLZ’s contra angle check function helps detect abnormalities caused by deterioration of the electric attachment and insufficient maintenance before use. To use it, connect the electric attachment to the motor, press the Check key, and view the results on the control unit. If the result shows “Oil” or “NG,” the motor will automatically slow down and stop. Other indicators will appear on the screen if the electric attachment needs lubrication or repairs.
The NLZ E endo motor’s reciprocating function allows it to work with WaveOne files. A large rotating angle in the cutting direction provides high efficiency, whereas a smaller angle in the reverse direction allows the WaveOne file to safely progress along the canal path while reducing the risk of a screwing effect and file breakage.
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