(PDF) Accuracy of three-dimensional printing for ...
2020-7-1 · In addition, the dental air turbine gains torque by applying compressed air to the rotor; the rotor spins for a while after air outflow because of the inertial force , . This freewheeling creates negative pressure within the turbine, resulting in uptake of contaminants (e.g. saliva and blood), the so-called suck-back effect , .
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