Ultrasonic monitoring of the setting of glass-ionomer luting cements.
Ultrasonic monitoring of the setting of glass-ionomer luting cements.
复制标题
玻璃离聚物粘固水泥凝固的超声波监测。
DOI：
10.1111/j.1600-0722.2007.00503.x
复制
发表时间：
2008
影响因子：
1.9
通讯作者：
M. Miyazaki
中科院分区：
文献类型：
--
作者：
K. Mori;H. Inage;R. Kawamoto;M. Tonegawa;H. Kurokawa;K. Tsubota;T. Takamizawa;M. Miyazaki
本研究使用超声波测量来监测玻璃离子水门汀的固化行为和弹性模量的变化。超声设备包括脉冲发生器接收器、换能器和示波器。将通过混合水泥盘的双向通过时间除以2，以说明上下移动路径，然后乘以材料内的声速。利用纵波和横波的声速来确定弹性模量。在凝固过程的早期阶段，大部分超声能量被骨水泥吸收，第二回波相对较弱。随着水泥硬化，声速增加，直到达到一个平台。测试的玻璃离子水门汀中声速的变化不同。15 min后，试样的平均弹性模量为2.6 - 6.2 GPa，24 h后为13.4 - 20.4 GPa，1个月后为11.4 - 22.4 GPa。在这项研究中使用的超声波方法具有相当大的潜力，确定的凝固过程的胶合水泥。
This study used ultrasonic measurements to monitor the setting behaviour, and changes in the elastic modulus, of glass-ionomer cements. The ultrasonic equipment comprised a pulser-receiver, transducers, and an oscilloscope. The two-way transit time through the mixing cement disk was divided by two, in order to account for the down-and-back travel path, and then multiplied by the sonic velocity within the material. The sonic velocities of the longitudinal and shear waves were used to determine the elastic modulus. In the earliest stages of the setting process, most of the ultrasound energy was absorbed by the cements and the second echoes were relatively weak. As the cements hardened, the sound velocities increased until they reached a plateau. The changes in sound velocities differed among the glass-ionomer cements tested. The mean elastic moduli of the specimens ranged from 2.6 to 6.2 GPa after 15 min, from 13.4 to 20.4 GPa after 24 h, and from 11.4 to 22.4 GPa after 1 month. The ultrasonic method used in this study has considerable potential for determining the setting processes of luting cements.
自酸蚀粘合剂测定脱矿树脂渗透牙本质的弹性模量。
DOI：
--
发表时间：
2007
期刊：
European Journal of Oral Science 115
影响因子：
--
作者：
Nishitani Yishihiro;et. al.;西谷佳浩;西谷佳浩;Yamaguchi k;Yasuda G
通讯作者：
Yasuda G