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Comparison of two soft tissue substitutes for the treatment of gingival recession defects: an animal histological study

机译：两种软组织替代物治疗牙龈衰退缺陷的比较：动物组织学研究

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Abstract Objectives: This study aimed to compare two different soft tissue replacement grafts in their ability to treat gingival recession defects and successfully integrate with the surrounding tissues. Methodology: Nine beagle dogs were included and followed up to 10 weeks. Sites for intervention were allocated to one of the grafting materials investigated. Treatment consisted of coronally advanced flap combined with one of the two soft tissue substitutes on a previous surgically created defect. Materials employed were porcine-derived acellular dermal matrix (ADM) [Novomatrix™ (Test)] and collagen-based matrix (CBM) [Mucograft® (Control)]. Animals were sacrificed at 2, 6, and 10 weeks postoperatively and compared using descriptive histology and histomorphometric outcomes. Results: Macroscopic findings were similar between test and control groups at all intervals. After 10 weeks, both groups demonstrated successful incorporation of the grafting materials without signs of rejection and with comparable tissue integration. The histomorphometric data were similar between groups at 2 weeks; however, the test group provided greater root coverage and increase in tissue thickness than the control at 6- and 10-weeks post surgically. Conclusions: Both porcine-derived ADM and CBM revealed similar histological outcomes with successful integration and absence of adverse events. Test group provided superior outcomes regarding root coverage and increase in tissue thickness.
机译：摘要目标：本研究旨在比较两种不同的软组织更换移植物，以其治疗牙龈衰退的能力，并成功与周围组织整合。方法论：九只猎犬犬被包括并随访10周。干预的网站被分配给调查的嫁接材料之一。治疗由冠状晚期的襟翼组成，与前一个手术产生的缺陷中的两个软组织替代品组合。所用材料是猪衍生的无细胞皮肤基质（ADM）[NovoMatrix TM（测试）]和基于胶原基（CBM）[MucoGraft®（Control）]。术后2,6和10周处死动物，并使用描述性组织学和组织素质结果进行比较。结果：宏观调查结果在所有间隔之间的试验和对照组之间相似。 10周后，两组均证明了在没有排斥的迹象和可比组织积分的情况下成功地结合了嫁接材料。组织素质数据在2周内与组之间相似;然而，测试组提供了更大的根覆盖，并且组织厚度增加而不是手术后6-周和10周的对照。结论：猪衍生的ADM和CBM都透露了具有成功整合和不良事件的类似组织结果。测试组提供了关于根覆盖的卓越结果，并增加组织厚度。

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