3M provides three distinct arch forms (Tapered, Square, & Ovoid) that reconcile the variation in curvature and width for MBT™ Appliance System Treatment.
For over a century, there has been a persistent search for the ideal arch form for human dentition. Changes to arch form during treatment may result in instability and subsequent relapse, which can contradict this search for the ideal arch form. In addition, there is an awareness that a great deal of variation exists from one human arch form to another. With this in mind, 3M developed three distinct arch forms. OrthoForm™ I Tapered Arch Form OrthoForm™ II Square Arch Form OrthoForm™ III Ovoid Arch Form All three of these arch forms complement the MBT™ Appliance System Treatment Philosophy.
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