Abstract: A device for separating a pair of adjacent teeth comprising a wire spring formed from a single piece of wire. The wire spring comprises two angled leg segments connected by a bridging portion, the leg segments being offset from one another and from a central reference plane such that when the leg segments are drawn towards a common plane, the bridging portion is placed under a torsional load. This torsional load causes the legs to apply a force to the proximal walls of the adjacent teeth. The terminal ends of the leg portions are blunted, preferably through the formation of loops.The wire utilized in formation of the separating spring is of a substantially rectangular cross section wherein the wire has a horizontal surface dimension which is greater than the vertical side dimension.