free gingival margin
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margin(mar'jin) [L. margo, border]
1. A border or boundary such as the edge of a structure, or of a pathological specimen removed from the body surgically. See: margo
2. In dentistry, the apical extent or boundary of enamel adjacent to the cementum of the tooth root; the junction of a restoration with the cavosurface angle of a prepared cavity in enamel.
The lower (abdominal) border of the front of the rib cage formed by the costal cartilages of ribs 7 to 10.
free gingival marginGumline.
margin of resectionSurgical margin.
The border of a tissue specimen that has been removed surgically from the body. It is often marked with an indelible dye to make it easily visible to the pathologist.Synonym: margin of resection
When obtaining biopsy specimens from a patient, the practitioner's goal is to obtain a tissue specimen that completely surrounds the lesion, so that the margins are free, i.e. not visibly penetrated by tumor cells.