Universidade Estadual Paulista, Faculdade de Odontologia de Araraquara, Departamento de Diagnostico e Cirurgia, Araraquara, Brasil.
Faculdades Integradas Espírito-Santenses, Faculdade de Odontologia, Departamento de Clínica Odontológica, Vitória, Brasil.
Acta Odontol Latinoam. 2021 Aug 1;34(2):119-126.
The aim of this pilot study was to evaluate the impact of the association of free gingival graft (FGG) or collagen-matrix xenograft (CMX) to deproteinized bovine bone graft (DBBG) on the preservation of post-extraction sockets with facial-wall defects. Sixteen patients who presented a maxillary tooth with a facial bone defect and indication of extraction were selected. After the surgical procedure, all the post-extraction sockets were filled with DBBG and covered with a collagen membrane. The cervical part of the socket was then sealed with either FGG or CMX. Clinical and tomographic analyses were performed at baseline and 4 months after the grafting procedure. The FGG sockets showed higher values for the width of the bone ridge than the CMX sockets at 4 months. There was no difference regarding biopsy composition. In conclusion, regardless of the type of soft tissue graft used, socket preservation with DBBG at sites presenting facial bone defects enabled implant placement without further guided bone regeneration, whether the sockets were sealed with FGG or CMX.
本初步研究旨在评估游离牙龈移植（FGG）或胶原基质移植物（CMX）与脱蛋白牛骨移植物（DBBG）联合应用于伴有颊侧骨缺损的拔牙窝保存的效果。选择 16 名上颌牙伴有颊骨缺损且需要拔牙的患者。手术完成后，所有拔牙窝均用 DBBG 填充并用胶原膜覆盖。然后用 FGG 或 CMX 封闭牙槽窝的颈部。在基线和移植术后 4 个月进行临床和影像学分析。FGG 组在 4 个月时牙槽嵴宽度的测量值高于 CMX 组。活检组成无差异。结论：在伴有颊侧骨缺损的位点，应用 DBBG 保存拔牙窝，无论牙槽窝颈部用 FGG 还是 CMX 封闭，都可在无需进一步引导骨再生的情况下进行种植体植入。
