Mandibular attachment structure, devoid of elastomeric member, for use in an orthodontic assembly having a force member connecting the mandibular and maxillar portions of the assembly and method of using the same. The structure includes bands dimensioned to encircle corresponding lower molars on opposite sides of the tongue, a single arched member connecting the bands and extending along a lingual side of the lower teeth, and threadless couplers each of which is affixed to a labial side of a corresponding band. Neither the structure nor the method require the use of an orthodontic brace to maintain a pressing connection between the structure and the rest of an orthodontic assembly. The pressing connection is maintained by cooperating a hook at the end of the force member and a hook at the end of a threadless coupler.
