A dental handpiece is disclosed, which includes a burr sleeve, upper and lower ball bearings for rotatably supporting the burr sleeve, a rotor fixed to the burr sleeve between the upper and lower ball bearings and rotated for rotatably driving the burr sleeve, and a dust controller. A method and a system are also provided. One fabrication technique applies pre-strain to a partially cured electroactive polymer. Hour’s status, discount values and minimum of coupons to activate deals are defined by business.