The first focused question (FQ1) was: What is the efficacy of connective tissue graft (CTG), as compared to the absence of soft tissue grafting procedure, in terms of gain in peri-implant soft tissue thickness (STT) reported by randomized controlled clinical trials (RCTs) or controlled clinical trials (CCTs)? The second focused question (FQ2) was: What is the efficacy of CTG, as compared to soft tissue substitutes, in terms of gain in peri-implant STT reported by RCTs or CCTs?

中文翻译：

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软组织填充术对种植体周围组织增厚的疗效：系统评价和荟萃分析

第一个重点问题 (FQ1) 是：在随机对照报告的种植体周围软组织厚度 (STT) 增益方面，结缔组织移植 (CTG) 与没有软组织移植程序相比的效果如何临床试验（RCT）还是对照临床试验（CCT）？第二个重点问题 (FQ2) 是：与软组织替代品相比，CTG 在 RCT 或 CCT 报告的种植体周围 STT 增益方面的功效如何？