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The labial bow is bent individually with a slight distance from the teeth and covered with acrylic. |
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Around the last molar a hook similar to a C-clasp is bent with its retention; it is connected to the covered labial bow through an elastic ligature. |
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The teeth are supported orally from the palatal plate and labially through the covered labial bow. No occlusal interferences should exist. The elastic ligature connects the palatal and the labial part of the appliance firmly. |
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