“…In the literature, an interpositional layer has been created between the oral and nasal layers in the soft palate region using different alternatives (acellular dermal matrix, hemostatic gelatin sponge, collagen membrane, and platelet-rich plasma) to enhance mucosal healing and reduce fistula formation (Losee et al, 2008; Hudson and Pickett, 2015; El-Anwar et al, 2016; Li et al, 2017; Goh and Chia, 2019; Simpson et al, 2019; Ha et al, 2020; Tanaka et al, 2021). Modifications on palatal dissection (subperiosteal flap technique vs mucoperiosteal flap technique) (Leenstra et al, 1996; Ito et al, 2006) and lateral relaxing incision (only a small incision lateral to the hamulus or no use of lateral incision) (Karsten et al, 2003; Becker and Hansson, 2013; Parikakis et al, 2018; Seo et al, 2019) have also been proposed to attenuate bone denudation-related scar contracture and subsequent maxillary growth interference.…”