Despite continuing improvements in resin-based composites,polymerization shrinkage remains a major drawback of polymerizable resins. Polymerization shrinkage generates stress within the composite that may lead to marginal gap formation,microleakage,postoperative sensitivity and secondary caries.
尽管树脂材料不断改进,仍然具有聚合收缩的缺陷,树脂聚合收缩常导致边缘微渗漏和裂隙的形成,这样就易于产生术后敏感和继发龋。
参考来源 - 流动复合树脂用于后牙Ⅱ类洞龋损树脂修复的基底层的研究·2,447,543篇论文数据，部分数据来源于NoteExpress
与其他甲基丙烯酸类树脂相比，EEPE树脂的聚合收缩率比较低。
Polymerization volume shrinkage of EEPE resin was lower than other dimethacrylate resin.
当聚合物往某一方向收缩时，则会往另一方向膨胀，这种运动很有用处。
As the polymer contracts in one direction, it expands in another, and these movements can do useful work.
研究人员几十年来一直在研究人造肌肉，这是一种电活性聚合物，加载电压时会膨胀或收缩。
Researchers have been experimenting with artificial muscles-electroactive polymers that can expand or contract when a voltage is applied-for decades.
应用推荐