Department of Prosthetic Dentistry, Graduate School of Biomedical Sciences, Nagasaki University, 1-7-1 Sakamoto, Nagasaki 852-8588, Japan.
Dent Mater J. 2010 Oct;29(5):554-61. doi: 10.4012/dmj.2010-012. Epub 2010 Aug 20.
Scant rheological information is available regarding home reliners (liner type denture adhesives). We evaluated 6 different home reliners in regard to their viscoelastic properties, water absorption and solubility. Dynamic viscoelastic properties and changes over time were determined using a dynamic viscoelastometer, while weight changes, absorption, and solubility during immersion in water were also investigated. We found that the dynamic viscoelasticity of the tested home reliners was sensitive to changes in frequency, while the materials used had nearly no elasticity and exhibited viscous behaviors. They showed a dramatic change in viscoelastic properties and increase in weight after approximately 1 day of water immersion. A considerably high percentage of water absorption was also observed. From the viewpoint of dynamic viscoelastic properties and durability, our results indicate that the tested home reliners would not be suitable for improvement of ill-fitting dentures.
关于家用衬里材料（衬垫型义齿黏附剂），相关流变学信息有限。本研究旨在评估 6 种不同的家用衬里材料的黏弹性、吸水性和溶解性。采用动态黏弹性测量仪评估其黏弹性，并随时间的变化情况，同时还研究了浸水过程中的重量变化、吸收和溶解情况。结果显示，测试的家用衬里材料的动态黏弹性对频率变化敏感，而所用材料几乎没有弹性，表现出粘性行为。在水浸泡约 1 天后，其黏弹性和重量发生明显变化。吸水性也相当高。从动态黏弹性和耐用性的角度来看，我们的研究结果表明，所测试的家用衬里材料不适合改善不合适的义齿。
