The Modified Rick-A-Nator can be used when patient compliance is not an issue (and you are looking for a repositioning appliance where bands do not need to be placed and the palate needs to be kept free of acrylic). Design is similar to the upper part of the Spahl appliance -- with the exception that Crozat Clasps are used on the molars (instead of molar bands). Typically, the Modified Rick-A-Nator is used as a maintenance appliance -- once functional repositioning has occurred and passive settling of the posteriors is desired. It can, however, be used in any procedure where a Rick-A-Nator would be the appliance of choice. For example, it can be used -- with the addition of posterior pads and inter-arch elastics -- to actively erupt the lower posteriors.