Clinical outcomes of free gingival graft, xenogeneic collagen matrix, and acellular dermal matrix for peri-implant keratinized mucosa augmentation: a randomized controlled trial Shaoqing Sun Wenxi Zhao Yunqiu Zhang Zikai Gong Xingfang Dai Shengjia Zhang Zhenghao Hao Yong Wen Jul 2026 · Clinical Oral Investigations · Vol 30 · 0 citations · 70 references Medicine DOI PubMed Semantic Scholar Save View source Cite { copied='apa'; setTimeout(() => { copied=null; open=false }, 1000) })" class="flex w-full items-center justify-between rounded-lg px-3 py-2 text-left text-sm hover:bg-gray-100 dark:hover:bg-ink-800"> Copy APA Copied ✓ { copied='mla'; setTimeout(() => { copied=null; open=false }, 1000) })" class="flex w-full items-center justify-between rounded-lg px-3 py-2 text-left text-sm hover:bg-gray-100 dark:hover:bg-ink-800"> Copy MLA Copied ✓ { copied='bibtex'; setTimeout(() => { copied=null; open=false }, 1000) })" class="flex w-full items-center justify-between rounded-lg px-3 py-2 text-left text-sm hover:bg-gray-100 dark:hover:bg-ink-800"> Copy BibTeX Copied ✓ Share