Impaction of lower second molars is not as common as that of third molars, but when it occours, it must be carefully managed to avoid negative effects on first molars, such as the resorption of its distal root.

In such situation, the third molars, when present, are commonly positioned on the eruption path of the impacted second molars, which leads to the need for their extraction to enable the traction procedure. In the case presented, during the extraction of the tooth 48, a button was bonded to the occlusal surface of the tooth 47 and a TMA compression loop was used for its distalization and extrusion. Note the great improvement in the positioning of this tooth, which occurred over two activations of the loop.

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