Department of Periodontics and Implantology, Vishnu Dental college, Bhimavaram, India.
Department of Prosthodontics and Implantology, Vishnu dental college, Bhimavaram, India.
Clin Adv Periodontics. 2024 Jun;14(2):134-141. doi: 10.1002/cap.10259. Epub 2023 Jul 22.
A biological seal that protects the implant from any biological or external impingement is created by the supracrestal attached tissues. Sohn's poncho technique is a technique that utilizes a healing abutment at the implant site to stabilize the platelet rich fibrin (PRF) membrane. Thus, the aim of this study is to evaluate the efficacy of Sohn's poncho technique used for placement of leukocyte PRF (L-PRF) membrane in improving the peri-implant mucosal thickness and width of keratinized mucosa as well as in the acceleration of healing process compared to the peri-implant mucosa surrounding healing abutments placed without the L-PRF membrane.
A split mouth randomized controlled clinical trial was designed in which implants were placed in the mandibular posterior region. Healing abutment is placed along with the L-PRF membrane at the test site using Sohn's poncho technique and at control site conventional healing abutment placement was done at second stage. The thickness of peri-implant mucosa as primary outcome and the Width of keratinized tissue and healing as secondary outcomes were measured and assessed at various time intervals.
Statistically significant difference was seen in inter-group analysis when peri-implant mucosal thickness (3.8 ± 0.4 mm vs. 2.3 ± 0.4 mm) and width of keratinized mucosa (3.6 ± 0.6 mm vs. 2.7 ± 0.3 mm) in test and control groups respectively and intragroup analysis of test and control groups at 4 weeks and 6 weeks' time points. The control group showed faster healing when compared to the test group.
Sohn's poncho technique in combination with L-PRF has the potential to improve the thickness of peri-implant mucosa and the width of keratinized mucosa around implants.
通过附着于种植体的组织，形成了一种生物密封体，以保护种植体免受任何生物或外部撞击。Sohn 的披风技术是一种利用种植体部位的愈合基台来稳定富含血小板纤维蛋白（PRF）膜的技术。因此，本研究旨在评估 Sohn 的披风技术用于放置白细胞富纤维蛋白（L-PRF）膜在改善种植体周围黏膜厚度和角化黏膜宽度以及加速愈合过程方面的疗效，与不放置 L-PRF 膜的愈合基台周围种植体黏膜相比。
设计了一项分口随机对照临床试验，在下颌后区植入种植体。在试验部位使用 Sohn 的披风技术放置愈合基台和 L-PRF 膜，在对照部位则在第二阶段常规放置愈合基台。将种植体周围黏膜厚度作为主要结果，角化组织宽度和愈合作为次要结果，在不同时间间隔进行测量和评估。
当在试验组和对照组之间进行组间分析时，种植体周围黏膜厚度（3.8±0.4mm 与 2.3±0.4mm）和角化组织宽度（3.6±0.6mm 与 2.7±0.3mm）存在显著差异，并且在试验组和对照组的组内分析中，在 4 周和 6 周时也存在显著差异。与试验组相比，对照组的愈合速度更快。
Sohn 的披风技术联合 L-PRF 具有改善种植体周围黏膜厚度和角化黏膜宽度的潜力。
