The objective of this study was to compare the silk suture with a cyanoacrylate adhesive to stabilize the free gingival graft in conjunction with Er: YAG laser-assisted recipient site preparation to augment the keratinized tissue in gingival recession cases. This randomized trial comprised of 300 recession defects patients. All the included patients were diagnosed using Miller class I and II gingival recession defects classification. Group I sites were treated with a free gingival graft (FGG) harvested using an Er: YAG laser and further sutured with silk. Group II sites were stabilized with isoamyl 2 cyanoacrylate bio-adhesive material. Clinical parameters, such as gingival recession depth, clinical attachment level, gain in gingival tissue thickness, and width of keratinized gingiva were recorded at baseline, and at third month, sixth month, and 12th month postoperatively. The mean changes in gingival recession from months 3 to 6 and months and 6 to 12 were significant (p < 0.05) in both groups. However, the improvement in recession depth was better in group II than in group I. The mean change in clinical attachment level did not differ significantly between the groups at the different time intervals. However, values tended to be higher in group II than in group I. The width of the keratinized gingiva tended to be higher from baseline to 3 months, baseline to 6 months, baseline to 12 months, 3 to 6 months, and from 6 to 12 months in group II as compared with group I (p > 0.05). Cyanoacrylate could be used as a substitute to silk sutures to stabilize FGGs. Cyanoacrylate was easy to apply, consumed less operating time, and was considered equally efficacious for stabilizing FGGs.

本研究的目的是比较丝线缝合与氰基丙烯酸酯粘合剂的结合，以稳定游离牙龈移植物，并结合 Er:YAG 激光辅助受体部位准备，以增强牙龈退缩病例中的角化组织。这项随机试验由 300 名衰退缺陷患者组成。所有纳入的患者均采用 Miller I 类和 II 类牙龈退缩缺陷分类进行诊断。I 组位点采用 Er:YAG 激光采集的游离牙龈移植物 (FGG) 进行处理，并进一步用丝线缝合。II 组位点采用 2 氰基丙烯酸异戊酯生物粘合材料进行稳定。记录基线、术后第三个月、第六个月和第 12 个月的临床参数，如牙龈退缩深度、临床附着水平、牙龈组织厚度增加和角化牙龈宽度。 两组中第 3 至 6 个月以及第 6 至 12 个月牙龈退缩的平均变化均显着 ( p < 0.05)。然而，第二组的退缩深度改善优于第一组。不同时间间隔各组之间临床依恋水平的平均变化没有显着差异。然而，II 组的值往往高于 I 组。从基线到 3 个月、基线到 6 个月、基线到 12 个月、3 到 6 个月以及 6 到 6 个月，角化牙龈的宽度往往更高。与 I 组相比，II 组为 12 个月（p > 0.05）。氰基丙烯酸酯可用作丝缝线的替代品来稳定 FGG。氰基丙烯酸酯易于应用，消耗的操作时间较少，并且被认为对于稳定 FGG 同样有效。