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首页> 外文期刊>Indian Journal of Scientific Research >EVALUATION OF MARGINAL DISCREPANCY AND MICROLEAKAGE OF LAVA ULTIMATE (RESIN NANO CERAMIC) VERSUS LITHIUM DISILICATE (IPS E.MAXCAD) ENDOCROWNS. IN VITRO STUDY
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EVALUATION OF MARGINAL DISCREPANCY AND MICROLEAKAGE OF LAVA ULTIMATE (RESIN NANO CERAMIC) VERSUS LITHIUM DISILICATE (IPS E.MAXCAD) ENDOCROWNS. IN VITRO STUDY

机译：熔岩终极（树脂纳米陶瓷）对二硅酸锂（IPS E.MAXCAD）内包装的边际差异和微漏失的评估。体外研究

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Extra coronal restoration for endodontically treated teeth is preferable. Endocrowns have become a promising alternative in the functional recovery of endodontically treated molar teeth. Lava Ultimate Resin Nano Ceramic (RNC) blocks express the uniquebiomechanical complex (monoblock). Reducing the marginal discrepancies and microleakage of a restoration is attained by preventing the luting material from dissolution and exposure to oral environment. Natural teeth were assigned into 2 groups accordingto the material of endocrowns. Group 1: (4 each): LAVA Ultimate. Group 2: (4 each) E.Max CAD. The crown portion of all molars were removed perpendicular to the long axis and subjected to standard endodontic treatment. Scanning, designing and milling ofendocrown restorations corresponding to each tooth preparation. Endocrowns were cemented and thermocycled. Each specimen was photographed using USB Digital microscope with a built-in camera. A digital image analysis system was used to measure and qualitatively evaluate the gap width. Dye penetration depth was measured with using USB Digital microscope with the built-in camera. It was found that E.max group recorded higher vertical marginal gap mean value (76.99 ± 5.04 um) than Lava Ultimate group (69.51 ± 7.1 pm) and was statistically non-significant (P>0.05) as indicated by student t-test. The vertical marginal discrepancy of the E.max CAD and Lava Ultimate endocrowns fall within the clinically acceptable range <120um.
机译：对于经牙髓治疗的牙齿，最好进行额外的冠状修复。在牙髓治疗的臼齿的功能恢复中，内分泌已成为一种有希望的替代方法。熔岩终极树脂纳米陶瓷（RNC）块表达了独特的生物力学复合物（单块）。通过防止the剂溶解和暴露于口腔环境，可以减少修复体的边缘差异和微渗漏。根据内冠的材料将天然牙齿分为2组。第一组：（每个4个）：LAVA Ultimate。第2组：（每组4个）E.Max CAD。垂直于长轴除去所有臼齿的冠状部分，并进行标准牙髓治疗。扫描，设计和铣削与每种牙齿准备相对应的内向修复体。将内腔粘固并热循环。使用带有内置相机的USB Digital显微镜拍摄每个标本。使用数字图像分析系统来测量和定性评估间隙宽度。染料渗透深度是使用带有内置相机的USB数字显微镜测量的。发现E.max组的垂直边缘间隙平均值（76.99±5.04 um）比Lava Ultimate组（69.51±7.1 pm）高，并且通过学生t检验显示在统计学上无统计学意义（P> 0.05）。 E.max CAD和Lava Ultimate内冠的垂直边缘差异在临床可接受的范围内<120um。

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