The effect of thermocycling on the hardness of soft lining materials.
The effect of thermocycling on the hardness of soft lining materials.
复制标题
热循环对软衬里材料硬度的影响。
DOI：
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发表时间：
1991
影响因子：
1.9
通讯作者：
A. Harrison
中科院分区：
文献类型：
--
作者：
S. Qudah;R. Huggett;A. Harrison
本文研究了热循环对六种市售软衬材料硬度的影响。用于测量硬度的仪器测量了压头在一次接触载荷和二次渗透载荷下对试件的渗透深度之差。对照样品保存在20+/-2摄氏度的水中，试验样品在18+/-1摄氏度和53+/-1摄氏度之间热循环长达28天。研究发现，热循环对所有六种材料的柔软性都有不利影响。此外，还表明，主席侧临时软衬材料在超过50摄氏度的温度下会迅速恶化。
This investigation studied the effect of thermocycling on the hardness of six commercially available soft lining materials. The apparatus used to measure hardness measured the difference between depth of penetration of an indentor into a specimen under a primary contacting load and a secondary penetrating load. Control specimens were stored in water at 20 +/- 2 degrees C and trial specimens were thermocycled between 18 +/- 1 degree C and 53 +/- 1 degree C for periods up to 28 days. It was found that thermocycling had a deleterious effect on the softness of all six materials. Further, it was shown that chairside provisional soft lining materials demonstrate a rapid deterioration at temperatures greater than 50 degrees C.