Place the ball pin from distal to mesial into the head gear tube. Only in particular cases I advise the use from mesial to distal, because sometimes there is an interference among lower and upper bands, and the Ritto device.
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Activation is achieved by sliding the lock along the lower arch in the distal direction and then fixing it against the Ritto Appliance.
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The lock slides along the lower arch against the Ritto Appliance. For this procedure use the mini wrench.