Ash J L, Nikolai R J
J Dent Res. 1978 May-Jun;57(5-6):685-90. doi: 10.1177/00220345780570050301.
Relaxation patterns for two orthodontic polyurethane-based elastics have been quantified in dry air and water bath environments and in vivo. Water bath simulation of in vivo behavior is apparently valid for up to a week following initial activation, but it becomes somewhat erroneous thereafter.
已对两种正畸用聚氨酯基弹性体在干燥空气、水浴环境及体内的松弛模式进行了量化。在初始激活后的一周内，对体内行为的水浴模拟显然是有效的，但此后就会出现一定误差。
