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[Surgico-orthodontic recovery of horizontal impacted second and third lower molars (author's transl)].

In 6 cases of horizontal impacted second molars seen between 1951 and 1961, the authors were able to remove or ensure removal of the gum overlying the crowns of these teeth, to make a small transverse horizontal hole below the mesial neck, and straighten them in an average period of 5 months with the use of an auxiliary spring on a plate or better on a vestibular arch (figs 5 and 6). The constant success of this method led them to use if for impacted lower wisdom teeth, even when almost horizontal (figs 1, 2, 3, 4) in patients aged between 17 and 20 years, avoiding their removal.