A New or Improved Dental Appliance for Regulating the Teeth.

摘要

5734. Hackett, W., and Hackett, W. E., [trading as Hackett & Son, W.]. March 8. Teeth, regulating.-In a device for regulating the teeth, the anchor bands A are split and soldered to tubes B, C, which are slipped on the threaded ends of the regulating - arch D and tightened between the nuts E, F.