Dent Mater:复合树脂的7年回顾性生存评价以及影响因素分析

2017-04-06 MedSci MedSci原创

复合树脂、尤其是纳米复合树脂在临床上具有广泛的应用,但许多资料提及复合树脂直接充填修复非"永久"修复。为什么会有这样的说法?在材料更新迭代如此迅速的今天,复合树脂仍非"永久"修复吗?其长期生存率如何?预后的影响因素又有哪些呢?Lempel E, et al等学者为我们的这些疑问提供了可借鉴的答案。

复合树脂、尤其是纳米复合树脂在临床上具有广泛的应用,但许多资料提及复合树脂直接充填修复非"永久"修复。为什么会有这样的说法?在材料更新迭代如此迅速的今天,复合树脂仍非"永久"修复吗?其长期生存率如何?预后的影响因素又有哪些呢?Lempel E, et al等学者为我们的这些疑问提供了可借鉴的答案。

这是一篇长达7年的回顾性研究,它评估了微混合树脂和纳米填料树脂直接充填修复上前牙活髓牙的生存率,并针对相关影响因素:磨牙症、饮料摄入量和吸烟,对充填体长期效果的作用情况进行分析。

2006年至2011年期间,将诊断为牙折裂或前牙间隙并进行直接充填修复的患者纳入研究。根据美国公共卫生署(USPHS)标准,总共对65名平均年龄在25.2岁的成年患者、163个修复体(78个Filtek Supreme XT,85个Enamel Plus HFO)进行评估。使用四格表精确检验、扩展Cox回归分析和Kaplan-Meier生存率估计的乘积限法对数据进行统计学分析。

结果显示:在平均观察年限的7.2(±1.4)年期间,平均年度失败率为1.43%。修复体失败的主要原因有:充填物折裂和颜色失调。纳米填料树脂直接修复体颜色失调的发生率更高(p=0.002),而微混合树脂直接修复失败的原因则更多在于充填体折裂(p=0.034)。使用Enamel Plus HFO 或 Filtek Supreme XT两种复合树脂的潜在危险性从总体而言并无统计学差异(p=0.704)。在置入的第一年,修复体破碎、折裂的发生率更高(p=0.036),而饮料的摄入与充填体的变色情况显着相关(p=0.005)。

使用复合树脂直接修复体是牙齿折裂和前牙间隙关闭极佳的治疗选择。10年的总体生存率高达88.34%。微混合树脂和纳米填料树脂的生存率相似,但纳米填料树脂变色的几率更高,同时,微混合树脂破裂的几率更高。

由此可见,纳米填料的复合树脂具有更高的强度,却更容易颜色改变。这为我们的临床应用提供理论基础,提醒口腔临床医师需要据此情况与患者进行良好的沟通。

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    2017-04-08 huagfeg
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    2017-04-08 chenshujs
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    2017-04-07 laymankey

    感谢分享一下!

    0