Comparative clinical evaluation of freeze-dried skin allografts and autogenous gingival grafts in humans.

Freeze-dried skin (FDS) allografts and fresh autogenous free gingival grafts (FGG) were placed in five paired sites in four patients. Both types of grafts healed uneventfully. Evaluation over a 1-year period demonstrated no statistically or clinically significant differences between the FDS and FGG when: a) increase in the width of keratinized gingiva, b) decrease in recession, c) decrease in sulcus depth, k) gain in attachment level, or e) percent shrinkage of the graft were compared.