The combination technique: A system of controlled light-wire therapy

Abstract

The combination technique is a system of controlled light-wire therapy embodying the most significant principles of the light-wire and edgewise mechanisms. The tipping forces initiated by the 0.016 inch light wire and the application of the differential elastic force principle is a closer approach to physiologic tooth movement. Clinically, we have routinely observed that malposed teeth, when treated according to the Begg light-wire technique, move gently and rapidly in the path of light forces as a result of the cellular activity set up by the light and resilient 0.016 inch arch wire. Sims 10 stresses that the source of anchorage in most cases appears to be affected only to a small extent when light, tipping, nonbinding forces are employed. In critical cases, however, this anchorage can be reinforced with a palatal button and with Class III directional light elastics for the purpose of incisor retraction. As Steiner 11 has succinctly stated: “A single arch wire of uniform standard design and size cannot serve with equal efficiency for the various purposes necessary.” It follows, therefore, that different types of apparatus, appliance construction and design, and different wire sizes may be needed for proficient and controlled performance in carrying out different assignments. Therefore, by uniting the treatment requisites into a single basic appliance unit, such as the combination of the light-wire bracket with the twin edgewise bracket, we render the necessary controlled procedures through the application of the multiple light arch wires and the edgewise appliances. In summarizing the qualities of the combination light-wire and edgewise appliances, we find (1) universal action offering control of tooth movements in all directions, (2) automatic, self-acting appliances, with a long span of action and few adjustment periods, (3) simple, uniform design, with precise rapid construction, and (4) physiologic action that is gentle, painless, and compatible with the cells and tissues surrounding the teeth.