Manuja N, Pandit I K, Srivastava N, Gugnani N, Nagpal R
Department of Pediatric Dentistry, DVA Dental College, Yamunanagar, Haryana, Uttar Pradesh, India.
J Indian Soc Pedod Prev Dent. 2011 Jan-Mar;29(1):7-13. doi: 10.4103/0970-4388.79913.
To comparatively evaluate the shear bond strength of recent tooth-colored restorative materials to dentin.
Flat dentinal surface were prepared from 60 caries free, extracted human permanent molars and were mounted in acrylic rings. These were randomly divided into four groups - Group A to Group D, according to the restorative material used i.e. Glass ionomer cement (Fuji IX), Giomer (Beautifil), an Ormocer-based composite (Admira) and Nano Ceramic restorative material (Ceram X). These restorative materials were applied on dentinal surface of all the specimens using nylon cylinders. The mounted samples were stored in distilled water for 24 hours and thermocycled. They were then subjected to shear bond strength test using universal testing machine. Data was analyzed using a one-way analysis of variance (ANOVA) and student's 't'-test.
Ceram X (16.63 ± 0.94 MPa) and Admira (17.31 ± 0.95 MPa) were comparable in their bond strength values, but depicted significantly higher bond strength when compared to Beautifil (12.39 ± 1.05 MPa) and Fuji IX (7.76 ± 1.07 MPa).
Nano-ceramic and ormocer-based restorative materials showed better bonding potential to dentin as compared to GIC and Giomer.
比较评估新型牙齿颜色修复材料与牙本质之间的剪切粘结强度。
从60颗无龋的拔除人类恒牙制备平坦的牙本质表面，并将其安装在丙烯酸环中。根据所使用的修复材料，即玻璃离子水门汀（富士IX）、聚酸改性复合树脂（碧兰美塑）、基于有机-无机杂化材料的复合材料（阿迪拉）和纳米陶瓷修复材料（赛拉X），将这些样本随机分为四组——A组至D组。使用尼龙圆柱体将这些修复材料应用于所有样本的牙本质表面。将安装好的样本在蒸馏水中储存24小时并进行热循环处理。然后使用万能试验机对它们进行剪切粘结强度测试。使用单向方差分析（ANOVA）和学生t检验对数据进行分析。
赛拉X（16.63±0.94兆帕）和阿迪拉（17.31±0.95兆帕）的粘结强度值相当，但与碧兰美塑（12.39±1.05兆帕）和富士IX（7.76±1.07兆帕）相比，其粘结强度明显更高。
与玻璃离子水门汀和聚酸改性复合树脂相比，纳米陶瓷和基于有机-无机杂化材料的修复材料对牙本质显示出更好的粘结潜力。
