Profile: Osada Electric Co., Ltd. is an ISO 14000 certified company. Our product Smily Z is advanced safety dental unit. It cleans easily spittoon bowl, which is subject to stain, with photo catalysis. The digital display visualizes the rotation speed. In addition, root canal instruments, such as nickel-titanium files can be used safely in enlargement of root canal, as 10 grades of torque are available at low rotational speeds of the micromotor. The Smily J is a dental unit set available as either standard or custom-made equipment, to satisfy each customer's individual needs by making their own original system. The chair has one hydraulic motor for elevating/lowering the seat and a gear-motor for reclining/raising the backrest.