| | Authors, year | Buccal flap | Membrane | Xenograft | Allograft | Autogenous | Provisionalization on implant crown | Groups (sample) | Surgical technique soft tissue augmentation |
| | Migliorati et al., 2015 [17] | N | N | Y | N | N | Y | TG (24), CG (24) | IIPP with SCTG (TG) and IIPP without SCTG (CG) | | Bianchi and Sanfilippo, 2004 [6] | N | N | N | N | N | N | TG1 (32), TG2 (42),TG3 (22), and CG (22) | IIP with SCTG (3 TGs) and IIPP without SCTG (CG) | | Yoshino et al., 2014 [18] | N | N | Y | N | N | Y | TG (10), CG (10) | IIPP with SCTG (TG) and IIPP without SCTG (CG) | | Rungcharassaeng et al., 2012 [34] | N | N | Y | Y | N | N | TG (31), CG (24) | IPP with SCTG (TG) and without SCTG (CG) | | Cornelini et al., 2008 [35] | Y/N | Y/N | N | N | N | Y | TG (17), CG (17) | IIPP with SCTG (TG) and IIPP without SCTG (CG) | | Lee et al., 2012 [36] | Y | Y | Y | N | N | Y | TG (10) | IIPP with SCTG (TG) | | Kan et al., 2009 [37] | N | N | Y | N | N | Y | TG (20) | IIPP with SCTG (TG) | | Kan et al., 2007 [38] | Y/N | Y | Y | N | Y | Y | TG (11), CG (12) | IIPP with SCTG (TG) and IIPP without SCTG (CG) | | Nemcovsky et al., 2000 [26] | Y | N | Y | N | N | N | TG (24) | IIP with RPF (TG) | | Tsuda et al., 2011 [39] | N | Y | Y | N | N | Y | TG (10) | IIPP with SCTG (TG) | | Chung et al., 2011 [40] | N | N | Y | N | N | Y | TG (10) | IIPP with SCTG (TG) | | Covani et al., 2007 [20] | N | N | N | N | N | N | TG (10) | IIP with SCTG (TG) | | Jyothi et al., 2013 [21] | Y | N | N | N | N | N | TG (10) | IIP with SCTG (TG) | | Nemcovsky et al., 1999 [25] | Y | Y/N | Y | N | N | N | TG (14 in 15 sites), CG (15 in 18 sites) | IIP with RPF used membrane (TG) and IIP with RPF used no membrane (CG) |
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