Department of Periodontology, Universitat Internacional de Catalunya (UIC), Barcelona, Spain.
Section of Post-graduate Periodontology, Faculty of Odontology, University Complutense of Madrid, Madrid, Spain.
J Clin Periodontol. 2020 Jul;47(7):892-899. doi: 10.1111/jcpe.13292. Epub 2020 Apr 29.
To compare the soft tissue stability (STA) around single implants previously augmented with either subepithelial connective tissue graft (SCTG) from the lateral palate (LP) or from the tuberosity area (TA).
Twenty-nine patients showing 33 implants with buccal volume deficiency randomly received SCTG from LP (control group/CG) or TA (test group/TG). At 4 months (FU-4) the definitive crown was installed and an intra-oral scan performed. At 12 months (FU-12), a new scan was registered. Between FU-4 and FU-12 STA was evaluated by STL image superimposition. Clinical parameters and the modified pink aesthetic score (PES) (Fürhauser et al. 2005) were recorded.
After FU-4 both tissues demonstrated a similar STA without statistically significant differences (SSD). The mean soft tissue changes were 0.03 ± 0.22 mm for CG and 0.04 ± 0.23 mm for TG (p = .870). SSD were observed for changes in keratinized tissue (KT) with greater stability for TG (0 ± 0.32 mm) compared with CG (-0.3 ± 0.33 mm) (p = .002). PES resulted in mean values of 8.37 ± 2.46 for CG and 8.54 ± 2.43 for TG (p=.59).
Both groups demonstrated similar STA between the definitive crown placement and 12 months, while greater stability of the KT gained was observed in TG.
比较经侧腭部（LP）或结节区（TA）黏膜下结缔组织移植（SCTG）增强的单个种植体周围软组织稳定性（STA）。
29 名患者共 33 个种植体颊侧体积不足，随机接受 LP（对照组/CG）或 TA（实验组/TG）的 SCTG。在 4 个月（FU-4）时安装最终修复体并进行口内扫描。在 12 个月（FU-12）时，记录新的扫描。在 FU-4 和 FU-12 之间，通过 STL 图像叠加评估 STA。记录临床参数和改良粉色美学评分（PES）（Fürhauser 等人，2005 年）。
FU-4 后，两种组织均表现出相似的 STA，无统计学差异（SSD）。CG 的平均软组织变化为 0.03±0.22mm，TG 为 0.04±0.23mm（p=0.870）。角化组织（KT）的变化存在 SSD，TG 的稳定性更高（0±0.32mm），CG 为-0.3±0.33mm（p=0.002）。PES 的平均值 CG 为 8.37±2.46，TG 为 8.54±2.43（p=0.59）。
两组在最终修复体放置和 12 个月时均表现出相似的 STA，而 TG 中 KT 的稳定性更高。
