The influence of the teeth crystal structure to the bonding mechanism and strength

牙齿晶体结构对粘接机制和强度的影响

• 批准号: 09672009
• 负责人: KAWADA Eiji
• 金额: $ 1.6万
• 依托单位: TOKYO DENTAL COLLEGE
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (C)
• 财政年份: 1997
• 资助国家: 日本
• 起止时间: 1997 至 1998
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-09672009/
• 关键词: Dentin; Micro hardness; Crystal structure; Micro X-ray diffract; Micro bond strength; Bonding mechanism; film X-ray diffract; 薄膜X線回析; 接着歯学; 樹脂含浸層; プライマー; 微少接着強さ; ダンベル型試験片; X線回析; 結晶

To investigate the influence which the difference of the structure of the limit bonding phase boundary and moreover the ivory quality exerts on the one of the bonding strength as far as it is possible. It set up and it developed micro bonding gluing strength measurement equipment by the examination.To analyze relate-ability with the crystal structure, as for the area of the gluing part, it thought of about 2mm^2 and it bought an improvement-type examination machine for its purpose and attachment which agreed with the purpose, too, was complete.Also, it experimented at the area, it put on shear bonding strength which was adopted in the past and about 1.5-twice of gluing strength were shown at most of the material compared with the result of the examination. Bond strength evaluation will need to performed using an interfacial fracture mechanics approach, which is more complicated compared with the simple bond strength test.In addition to that the equipment of the diffraction of the X ray … More of the micro subsection and the super film to be using for this experiment can make the crystal structure of the sample surface clear not, in the micro subsection (the 1- mum diameter), the crystal structure from the IOA thickness can be known. It examines a way of measuring sample, a measurement condition more in the future and it plans to examine the cause of the difference with gluing strength by the solid difference and relation with normal teeth. Most became lmm2 to exclude as far as the bonding area which is reported in recent years can make the influence of the flaw of the gluing phase boundary. It gets the result that this study person, too, adopted it, not to have thought only that he is the phenomenon of the flaw but for gluing strength, too, to have been increased with the area.Nano indenter hardness values at the point 10mum away from the interface in the direction of the dentin differed between system. This appeared to be influenced by the presence of the decalcified dentin not impregnated by resin, and by differences in both the chemistry of the hybrid layer and the composition of bonding resin. In the hybrid layer, no impression was found by SEM, although the hardness in the bonding interface was significantly different. It plans to pursue phase boundary observation having to do with a form, the crystal structure, the mechanical nature of it more. Less

探讨极限粘结相界结构的不同以及象牙质量的不同对粘结强度的影响。通过检测，建立并研制了微型粘接强度测试装置。为了分析与晶体结构的相关性，对于粘接部分的面积，考虑到约2 mm^2，为此购买了一台改进型测试机，附着物也达到了目的，并在该区域进行了实验，施加了过去采用的剪切粘接强度，与测试结果相比，大部分材料的粘接强度约为1.5-2倍。粘结强度的评估需要使用界面断裂力学方法，这比简单的粘结强度测试要复杂得多。此外，X射线…衍射仪的设备本实验所用的微片和超薄膜多会使样品表面的晶体结构变得不清晰，在微片(直径为1微米)中，可以从IOA的厚度得知晶体结构。它探讨了一种测量样本的方法，一种未来更多的测量条件，并计划通过固体差异以及与正常牙齿的关系来检查粘接强度差异的原因。对于近些年报道的粘接区域会造成粘接相界缺陷的影响，大多数都被排除在lmm~2之外。得出的结果是，这位研究人员也采用了它，不仅认为他是有缺陷的现象，而且对于粘接强度也随着面积的增加而增加。在远离界面10um处的纳米压痕硬度值在不同系统之间的牙本质方向是不同的。这似乎是受脱钙牙本质的存在而不是浸渍树脂，以及混合层的化学成分和粘结树脂的组成的差异所影响。在杂化层中，虽然结合界面的硬度明显不同，但在扫描电子显微镜下没有观察到印痕。它计划进行与一种形式、晶体结构以及更多机械性质有关的相界观测。较少