Ama-handpiece burs angamathuluzi abalulekile emkhakheni wobudokotela bamazinyo, ikakhulukazi ezinqubweni ezidinga ukunemba nokuzwela. Ngokungafani nezinhlamvu zesivinini esiphezulu, esebenza nge-RPM ephakeme kakhulu (inguquko ngomzuzu), iziphathi ezihamba kancane zivame ukusebenza ngejubane eliphansi, Ngokuvamile kusuka ku-10,000 kuye ku-40,000 RPM. Lelijubane elawulwayo liyinzuzo ikakhulukazi ezinhlelweni ezithile zamazinyo, al,