An electronically powered toothbrush (100). The toothbrush (100) includes abrush head(102) including a plurality of bristles (104), a motor (114), and an outputshaft (126)connected to the brush head (102) and the motor (114). The output shaft (126)isselectively rotated by the motor (114). The toothbrush (100) further includesa bumperassembly (148) connected to the output shaft (126) and configured to conservekineticenergy from the output shaft (126) during rotation and reapply the kineticenergy to theoutput shaft (126).
