It is important to keep spaces closed during the finishing stage of treatment, particularly in extraction cases. This can be accomplished with passive wire tiebacks (Fig. 10.10) when rectangular wires are in place, and with lacebacks from molars to cuspids when light wires are in use. In extraction cases, during the settling stage, figure-8 ligature wires (Fig. 10.11) should be placed across the extraction site to keep them closed. Also, in any other areas where space closure was somewhat difficult, figure-8 ligature wires or light elastic thread should be used to maintain space closure during settling. Carrying out these simple procedures eliminates the troublesome problem of spaces opening in the finishing stages of treatment.
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