A frenum is a naturally occurring muscle attachment, normally seen between the front teeth (either upper or lower). It connects the inner aspect of the lip with the gum. A lack of attached gingiva, in conjunction with a high (closer to the biting surface) frenum attachment, which exaggerates the pull on the gum margin, can result in recession. Additionally, an excessively large frenum can prevent the teeth from coming together resulting in a gap between the front teeth. If pulling is seen or the frenum is too large to allow the teeth to come together, the frenum is surgically removed from the area with a frenectomy. A frenectomy is simply the surgical removal of a frenum.
When orthodontic treatment is planned or initiated, the removal of an abnormal frenum, with or without a gingival graft, can increase stability and improve success of the final orthodontic result. This is a simple procedure, with many benefits, which generally takes 20-30 minutes and very quick recovery with little pain.