Objectives: This study evaluated clinical outcomes of acellular dermal matrix (ADM) allograft compared with autogenous free gingival graft (FGG) for gingival augmentation after 15 years.
Material And Methods: Twenty-two patients were originally included and evaluated by de Resende et al. (Clin Oral Investig 23:539-550, 2019), and 12 accepted to participate in this longitudinal evaluation.