[Z-plasty technic, applied to hypertrophy of the upper labial frenum].

The authors used the technique of Z-palsty in the surgical treatment of hypertrophy of the superior labial fraenum. They consider that this operation is indicated when there is hypertrophy of the fraenum with a low insertion, associated with an inter-incisor diastema, and that the lateral incisors have appeared without causing the diastema to disappear. This technique eliminates the possibility of a hypertrophic scar, a possible source of failure.