“…Clinically, this new collagen matrix was associated with a sufficient width of newly formed keratinized gingiva on teeth and implants and coverage of Miller class I and II recession defects (Cardaropoli, Tamagnone, Roffredo, & Gaveglio, 2012;Jepsen et al, 2013;Lorenzo, Garcia, Orsini, Martin, & Sanz, 2012;McGuire & Scheyer, 2010;Nevins, Nevins, Kim, Schupbach, & Kim, 2011;Sanz, Lorenzo, Aranda, Martin, & Orsini, 2009;Schmitt et al, 2013;Schwarz et al, 2012). The structural characteristics of the CM are designed to ensure that it maintains its barrier function for at least 30 days and therefore can be used as a guided bone regeneration device (Cioban et al, 2013;Ghanaati et al, 2011;Lindhe, Cecchinato, Donati, Tomasi, & Liljenberg, 2014;Parashis, Kalaitzakis, Tatakis, & Tosios, 2014;Parashis et al, 2016).…”