Abstract：
OBJECTIVE: This study aimed to compare the efficacy of two techniques-acellular dermal matrix (ADM) grafting and tenting technique (TT)-for soft tissue height (STH) augmentation simultaneous to implant placement to minimize peri-implant crestal bone level (CBL) changes.
METHODS: Forty patients with a healed single mandibular posterior edentulous site with a thin soft tissue phenotype were enrolled. Twenty patients received simultaneously to implant placement ADM grafting, while the others received submerged healing abutment (TT). Clinical peri-implant soft tissue height and radiographic CBL changes were measured at restoration delivery and 1-year follow-up.
RESULTS: Both techniques effectively increased soft tissue thickness, resulting in a final average STH of 3.4 ± 0.5 mm after augmentation. On average, soft tissue increased by 1.6 ± 0.5 mm in group ADM and by 1.8 ± 0.4 mm in group TT after augmentation. In Group ADM, mesial CBL decreased from 0.4 ± 0.3 mm to 0.1 ± 0.2 mm, and distal CBL decreased from 0.5 ± 0.3 mm to 0.2 ± 0.3 mm over 1 year. In Group TT, mesial CBL remained stable at 0.3 ± 0.2 mm, while distal CBL reduced slightly from 0.5 ± 0.5 mm to 0.3 ± 0.2 mm. Both groups showed minimal changes in CBL, indicating great stability (pmesial = 0.003, pdistal = 0.004). TT was particularly effective in preventing mesial bone loss (pmesial = 0.019). The mesial CBL changes significantly differed between groups (p = 0.019), and not significantly at distal sites (p = 0.944). Neither treatment exhibited significant bone remodeling below the implant shoulder.
CONCLUSIONS: This study suggests that both techniques were successful in STH augmentation, and they may effectively reduce peri-implant crestal bone level changes, with TT being slightly superior. TT was more prone to post-surgical complications. This RCT was not registered before participant recruitment and randomization.
METHODS: Forty patients with a healed single mandibular posterior edentulous site with a thin soft tissue phenotype were enrolled. Twenty patients received simultaneously to implant placement ADM grafting, while the others received submerged healing abutment (TT). Clinical peri-implant soft tissue height and radiographic CBL changes were measured at restoration delivery and 1-year follow-up.
RESULTS: Both techniques effectively increased soft tissue thickness, resulting in a final average STH of 3.4 ± 0.5 mm after augmentation. On average, soft tissue increased by 1.6 ± 0.5 mm in group ADM and by 1.8 ± 0.4 mm in group TT after augmentation. In Group ADM, mesial CBL decreased from 0.4 ± 0.3 mm to 0.1 ± 0.2 mm, and distal CBL decreased from 0.5 ± 0.3 mm to 0.2 ± 0.3 mm over 1 year. In Group TT, mesial CBL remained stable at 0.3 ± 0.2 mm, while distal CBL reduced slightly from 0.5 ± 0.5 mm to 0.3 ± 0.2 mm. Both groups showed minimal changes in CBL, indicating great stability (pmesial = 0.003, pdistal = 0.004). TT was particularly effective in preventing mesial bone loss (pmesial = 0.019). The mesial CBL changes significantly differed between groups (p = 0.019), and not significantly at distal sites (p = 0.944). Neither treatment exhibited significant bone remodeling below the implant shoulder.
CONCLUSIONS: This study suggests that both techniques were successful in STH augmentation, and they may effectively reduce peri-implant crestal bone level changes, with TT being slightly superior. TT was more prone to post-surgical complications. This RCT was not registered before participant recruitment and randomization.
摘要：
目的：本研究旨在比较两种技术-无细胞真皮基质（ADM）移植和隆起技术（TT）-在植入物放置的同时增加软组织高度（STH）以最大程度地减少植入物周围骨水平（CBL）变化的功效。
方法：纳入40例单下颌后牙颌无牙颌愈合部位软组织薄表型患者。20例患者同时接受植入植入ADM移植术，而其他人则接受了水下愈合基台（TT）。在修复分娩和1年随访时测量临床植入物周围软组织高度和影像学CBL变化。
结果：两种技术都有效增加了软组织厚度，增强后的最终平均STH为3.4±0.5mm。平均而言,增强后，ADM组软组织增加1.6±0.5mm，TT组软组织增加1.8±0.4mm。在ADM组中，中CBL从0.4±0.3mm下降到0.1±0.2mm，远端CBL在1年内从0.5±0.3mm下降到0.2±0.3mm。在TT组中,mesialCBL在0.3±0.2mm处保持稳定，而远端CBL从0.5±0.5mm略微降低至0.3±0.2mm。两组的CBL变化很小，表明很大的稳定性（pmesial=0.003，pterial=0.004）。TT在预防中骨丢失方面特别有效（pmesal=0.019）。组间CBL改变显着不同（p=0.019），并且在远端部位没有明显的差异（p=0.944）。两种治疗均未在植入物肩部以下表现出明显的骨重建。
结论：这项研究表明，这两种技术在增强STH方面都是成功的，它们可以有效地减少种植体周围骨水平的变化，TT略胜一筹。TT更容易发生术后并发症。该RCT在参与者招募和随机分组之前未注册。
方法：纳入40例单下颌后牙颌无牙颌愈合部位软组织薄表型患者。20例患者同时接受植入植入ADM移植术，而其他人则接受了水下愈合基台（TT）。在修复分娩和1年随访时测量临床植入物周围软组织高度和影像学CBL变化。
结果：两种技术都有效增加了软组织厚度，增强后的最终平均STH为3.4±0.5mm。平均而言,增强后，ADM组软组织增加1.6±0.5mm，TT组软组织增加1.8±0.4mm。在ADM组中，中CBL从0.4±0.3mm下降到0.1±0.2mm，远端CBL在1年内从0.5±0.3mm下降到0.2±0.3mm。在TT组中,mesialCBL在0.3±0.2mm处保持稳定，而远端CBL从0.5±0.5mm略微降低至0.3±0.2mm。两组的CBL变化很小，表明很大的稳定性（pmesial=0.003，pterial=0.004）。TT在预防中骨丢失方面特别有效（pmesal=0.019）。组间CBL改变显着不同（p=0.019），并且在远端部位没有明显的差异（p=0.944）。两种治疗均未在植入物肩部以下表现出明显的骨重建。
结论：这项研究表明，这两种技术在增强STH方面都是成功的，它们可以有效地减少种植体周围骨水平的变化，TT略胜一筹。TT更容易发生术后并发症。该RCT在参与者招募和随机分组之前未注册。
