Frenum is an anatomic structure formed by a fold of mucous membrane and connective tissue fibers that attach the lip and cheeks to the alveolar mucosa, the gingiva and the underlying periosteum. Placek et al. have classified frenum depending on the extension of attachment of fibers, (1) Mucosal: when the frenal fibers are attached up to mucogingival junction, (2) Gingival: when fibers are inserted within attached gingiva, (3) Papillary: when fibers are extending into interdental papilla, and (4) Papilla penetrating: when the frenal fibers cross the alveolar process and extend up to palatine papilla. Frenum with mucosal attachment is the usual and is considered to be the correct level of attachment but if the frenum that encroaches on the margin of the gingiva (Class 2 and above) may interfere with plaque removal, and the tension on the frenum may tend to open the sulcus eventually leading to gingival recession, midline diastema, root dentine hypersensitivity and unaesthetic looks...