The Efficacy of Amnion Chorion Allograft in Management of Type 1 Gingival Recession. (Randomized Clinical Trial)

Gingival recession (GR) is characterized by apical migration of soft tissue margin beyond the cemento-enamel junction (CEJ) or the platform of an implant.

Gingival recession is a common daily finding in every practice. As patients are more concerned with a pleasing smile, root exposure is a growing concern . Moreover, discomfort and inability to perform oral hygiene result from exposed root hypersensitivity. It affects the patient's abilities to maintain adequate plaque control which eventually complicates the situation more. It is advisable to augment tissues and increase keratinized tissue (KT) band to reduce discomfort and obtain an aesthetic smile.

multiple treatment modalities are available for treating gingival recession such as Pedicle flaps (coronally advanced flap (CAF), semilunar flap, laterally sliding flap (lSD), and double papilla flap), Free gingival graft (FGG), Subepithelial connective tissue graft (SCTG), Guided tissue regeneration. Modified coronally advanced tunnel, Vestibular incision subperiosteal tunnel access (VISTA), Pinhole technique (PST).

Size and number of recession defects, KT band, interproximal attachment level, depth vestibule and frenum pull are among factors to determine which procedure is suitable for that type of recession.

For single-type recession (localized or isolated), the use of CAF with SCTG is favorable for both root coverage and KT gain. According to the American Academy of Periodontology regeneration workshop "for Miller class 1 and 2 single-tooth recession defects, SCTG procedures provide the best outcome ". Using CAF combined with SCTG is considered the gold standard treatment for localized recession defects. SCTG improves root coverage, KT gain, and clinical attachment levels. Using SCTG helps stabilize CAF, increase root coverage predictability, and increase soft tissue thickness. CAF with SCTG is a predictable technique to increase root coverage, decrease recession depth, and increase KT width and thickness.