The fenum, a slender fold of mucous membrane with contained muscle fibres, connects the lips to the alveolar mucosa and underlying periostium. The frenum, a mucosal connection that joins a flexible section to a more stiff part, is one of the more fascinating yet sometimes misunderstood anatomical structures in the oral cavity. When the frenum are attached too closely to the gingival margin, either because of difficulty with plaque control or because a muscle pulls, the health of the gingiva may be at risk. Unaesthetic diastema is more common and can be caused by abnormal frenum, which can also be a sign of a syndrome or create serious mucogingival issues. In the following, we will provide a brief summary of the many varieties of frenum, as well as how they relate to different syndromes, indications, complications, and benefits.

Keywords : Aberrant frena; frenal attachments; frenectomy; syndromes