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J Clin Periodontol:结扎诱导小鼠种植体周围炎和牙周炎

2017-09-27 lishiting MedSci原创

种植体周围炎(PI)是发生在牙种植体周围的炎症,它与牙周炎(PD)具有相似的特性。然而,PI更难控制和治疗,并且其详细的病理生理学机制还不清楚。这篇研究的目的是通过小鼠模型分析和比较PI和PD的进展差异。

种植体周围炎(PI)是发生在牙种植体周围的炎症,它与牙周炎(PD)具有相似的特性。然而,PI更难控制和治疗,并且其详细的病理生理学机制还不清楚。这篇研究的目的是通过小鼠模型分析和比较PI和PD的进展差异。

研究拔除4周龄雄性C57BL/6J小鼠的上颌磨牙。将种植体植入已愈合的牙槽窝内并呈骨性结合。围绕植入体和第二磨牙结扎。对照组不进行结扎。在结扎后1周、1个月和3个月(n≥5/组/时间点)处死实验动物。随后进行骨缺失分析。按照以下实验进行组织学分析:HE染色、酸性磷酸酶(TRAP)、基质金属蛋白酶-8 (MMP-8)、活化B细胞的核因子κ-轻链增强子(NF-κB)、甲苯胺蓝和钙黄绿素。

结果显示,结扎后1和3个月的PI骨缺失要显著高于PD。结扎3个月时,PI组中有20%的植入体脱落;而PD组中无自然牙脱落。HE染色显示,PI组植入体周围牙槽骨的骨密度比PD组明显降低。与PD组相比,PI组的破骨细胞、MMP-8和NF-κB明显增加。

结论:与PD相比,PI造成更多的组织和骨破坏。未来的研究将关注于2种状态下的生理病理学差异。

原始出处

Hiyari S, Wong R, et al. Ligature-induced Peri-implantitis and Periodontitis in Mice. J Clin Periodontol. 2017 Sep 16. doi: 10.1111/jcpe.12817.

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    2017-12-09 huangdf
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    2018-06-04 feather89
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