Biobrane is a commercially available biodegradable membrane.

GTR is an example of a non-graft associated regenerative technique.

 A gingival abscess is localized to the gingiva and typically presents as a painful, non-fluctuant swelling with redness and tenderness. It differs from periodontal abscesses, which involve deeper structures, and periapical abscesses, which originate from the tooth apex.

ANUG is caused by Borrelia vincenti and Fusobacterium.

Secondary occlusal trauma primarily relates to occlusal discrepancies or effects on tooth mobility due to periodontal attachment loss rather than localized gingival inflammation alone.