A fold of tissue below the upper lip which connects near the top front tooth, and under the tongue, and along the inside of lower lip is the front tooth area is the frenum.Normally the labial frenum which has the fibers between the two front tooth, can cause hindrance for orthodontic closing of the spaces, by the problem of relapse, in such situations it is good to remove it. Certain times this tissue below the tongue can cause difficulty in tongue movements which needs removel.