Soft acrylic resin materials containing a polymerisable plasticiser II: water absorption characteristics.
Soft acrylic resin materials containing a polymerisable plasticiser II: water absorption characteristics.
复制标题
含有可聚合增塑剂的软质丙烯酸树脂材料二：吸水特性。
DOI：
10.1016/s0142-9612(98)00134-3
复制
发表时间：
1999
期刊：
影响因子：
14
通讯作者：
M. Braden
中科院分区：
文献类型：
--
作者：
S. Parker;D. Martin;M. Braden
软质丙烯酸树脂义齿衬里材料的主要缺点是失去增塑剂，导致逐渐硬化。这个问题的一个可能的解决方案是使用可聚合的增塑剂。一种基于这种增塑剂的材料在临床试验中失败了，原因是长时间的吸水和低强度的结合。类似的材料已经被开发出来，但强度得到了提高，本研究的目的是研究它们的吸水特性。测定了三种实验材料和商用塑化丙烯酸树脂义齿衬里材料“超软”的蒸馏水、人工唾液和0.9M生理盐水的吸水率。6个月后测定溶解度，适当时计算扩散系数。所有实验材料在所有溶液中的吸光度和溶解度都低于超软材料。对于每种物质，从溶液中的吸收都低于从蒸馏水中的吸收。所有的扩散系数都在这种材料的预期范围内。实验材料的吸水率受所用单体的相对亲水性影响。
The main disadvantage of soft acrylic resin denture lining materials is the loss of plasticiser leading to gradual hardening. One possible solution to this problem is the use of a polymerisable plasticiser. A material based on such a plasticiser failed in clinical trials due to a combination of prolonged water uptake and low strength. Similar materials with improved strength have been developed and it is the aim of this study to investigate their water uptake characteristics. Water uptake from distilled water, an artificial saliva and 0.9M saline has been determined for three experimental materials and ‘Supersoft’, a commercial plasticised acrylic resin denture lining material. Solubilities were determined after 6 months and diffusion coefficients calculated where appropriate. All the experimental materials had a lower uptake and solubility than ‘Supersoft’ in all solutions. For each material uptake was lower from solution than from distilled water. All diffusion coefficients were in the range expected for this type of material. The water uptake of the experimental materials was influenced by the relative hydrophilicity of the monomer used.