| 陈功,唐旭炎.光学印模法与普通印模法制作的全瓷嵌体边缘适合性比较[J].安徽医药,2018,22(8):1544-1547. |
| 光学印模法与普通印模法制作的全瓷嵌体边缘适合性比较 |
| A comparative study of the edge adaptability of all-ceramic inlay made by optical impression method and ordinary impression method |
| 投稿时间：2016-12-22 |
| DOI： |
| 中文关键词: 光学印模 普通印模 全瓷嵌体 边缘适合性 |
| 英文关键词: Optical impression Ordinary impression All-ceramic inlay Marginal fit |
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| 中文摘要: |
| 目的 研究采用光学印模法和普通印模法制作的全瓷嵌体与牙体组织间边缘适合性。方法 取1颗形态正常、无牙体缺损的下颌第二磨牙进行牙体预备,二次印模法取模翻制16个相同大小的超硬石膏模型代型,并将所有代型按随机数字表法随机分为光学印模组、普通印模组两组,两组分别用光学印模法和普通印模法取模,制作16个氧化锆全瓷嵌体,然后采用扫描电镜对其边缘间隙厚度进行测量,应用SPSS 19.0软件对实验数据进行统计分析,从而评价嵌体的边缘适合性。结果 光学印模组和普通印模组制作的嵌体水平间隙宽度分别为(46.25±5.04) μm和(77.52±11.71) μm,片切法电镜扫描结果显示,两种方法制作的嵌体边缘测试点均小于120 μm,边缘适合性比较均差异有统计学意义(t=6.938,P=0.000)。 结论 全瓷嵌体的边缘适合性光学印模组明显优于普通印模组,且两种方法制作的嵌体边缘适合性均在临床的可接受范围之内。 |
| 英文摘要: |
| Objective To explore the edge adaptability to dental tissues by comparing all-ceramic inlays made by optical impression and ordinary impression methods. Methods A mandibular second molar with normal morphology and no tooth defect was prepared.Sixteen identical superplastic plaster models were created by silicone impression method and randomly assigned into two groups:the optical impression group and the ordinary impression group,according to the random number table method.Two groups were treated with optical impression method and ordinary impression method modulus to make sixteen zirconia all-ceramic inlays respectively.The edge thickness was measured by scanning electron microscopy (SEM) and the data were statistically analyzed with SPSS 19.0 software to evaluate the edge adaptability of the inlay. Results The widths of the horizontal gaps of the inlays were (46.25±5.04) μm and (77.52±11.71) μm in the optical impression group and the ordinary impression group respectively.SEM showed that all marginal measuring points were less than 120 μm;the difference in edge adaptability was statistically significant (t=6.938,P=0.000). Conclusions The edge-adapted optical impression group for all-ceramic inlays was obviously better than the ordinary impression group,and the inlay edge adaptability made by both methods was within the clinically acceptable range. |
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