Department of Oral and Maxillofacial Surgery, University of Erlangen-Nuremberg, Erlangen, Germany.
Private Practice, Stein, Germany.
J Clin Periodontol. 2021 Jan;48(1):145-162. doi: 10.1111/jcpe.13387. Epub 2020 Nov 12.
This study evaluates the early volumetric changes after buccal soft tissue contour augmentation around implants with a porcine collagen matrix (CM) vs. the subepithelial connective tissue graft (SCTG) from the palate.
14 patients were enrolled after early implant placement with simultaneous contour augmentation and persistent buccal tissue deficits. At implant exposure, buccal soft tissues were thickened with the CM (n = 7) or the SCTG (n = 7). Impressions were taken before and after surgery, after ten days, one, three and six months. Impressions were digitized and augmented regions 3D evaluated (soft tissue volume (mm , %)/thickness (mm)).
Volume increase (mm ) after 6 months was 19.56 ± 8.95 mm (CM) and 61.75 ± 52.69 mm (SCTG) (insignificant, p = .058). In percentage, this was a volume loss of the initially augmented soft tissue volume (100%) of 81.76% in the CM group and 56.39% in the SCTG group (6 months). The mean soft tissue thickness increase (mm) in the buccal contour after 6 months was 0.30 ± 0.16 mm (CM) and 0.80 ± 0.61 mm (SCTG) (insignificant, p = .071).
The early healing phase is associated with a significant volume loss of the soft tissues. The SCTG shows insignificant superiority compared to the CM.
本研究评估了使用猪胶原蛋白基质（CM）和来自腭部的黏膜下结缔组织移植物（SCTG）对种植体周围颊侧软组织轮廓进行增强后的早期体积变化。
在早期植入物放置后，14 名患者同时进行轮廓增强和持续颊侧组织缺损。在植入物暴露时，使用 CM（n=7）或 SCTG（n=7）增厚颊侧软组织。手术前后、术后 10 天、1、3 和 6 个月进行印模。对印模进行数字化并对增强区域进行 3D 评估（软组织体积（mm ，%）/厚度（mm））。
6 个月后的体积增加（mm）为 19.56±8.95mm（CM）和 61.75±52.69mm（SCTG）（无显著差异，p=0.058）。按百分比计算，这是最初增强的软组织体积（100%）的 81.76%在 CM 组和 56.39%在 SCTG 组的体积损失（6 个月）。6 个月后颊侧轮廓的平均软组织厚度增加（mm）为 0.30±0.16mm（CM）和 0.80±0.61mm（SCTG）（无显著差异，p=0.071）。
早期愈合阶段与软组织的显著体积损失有关。与 CM 相比，SCTG 显示出无显著性优势。
