Early class II mixed-dentition treatment with the universal appliance

I have attempted to describe Dr. Nagamoto's rationale and a method of treating early-mixed-dentition cases. This particular adaption of a two-phase approach to this type of case was formulated by him in the early 1950's and has since been used in his office and mine. The steps, mechanics, and arch wires necessary for treatment have been outlined. It is thought that, by approaching these cases at an early age, the potential is increased for development so as to avoid the extraction of premolars and to prevent possible irreparable damage to the procumbent maxillary anterior teeth in the event of an accident. It has been shown that these young patients can be treated successfully with an efficient, gentle appliance that, in my own clinical experience, has proved to be most valuable.