Benting Douglas G, Pesun Igor J, Hodges James
Restorative Sciences, University of Minnesota, MN, USA.
J Prosthodont. 2005 Sep;14(3):175-83. doi: 10.1111/j.1532-849X.2005.03011.x.
Six resilient denture liners (RDL) were exposed to two immersion effervescent denture cleansers to evaluate change in compliance over a simulated 1 year time interval.
Ten samples of each material, Molloplast B, Mollosil, MPDS-SL, Permasoft, Softline, and Sofreliner were exposed to either Fixodent or Efferdent denture cleanser. A cyclic load was applied in a squarewave fashion to derive a load displacement curve to measure compliance at 0, 7, 30, 180, and 360 simulated days.
All 12 of the material/cleanser combinations demonstrated a significant change in compliance at each time interval relative to baseline. Mollosil had the greatest increase in flexibility from baseline, and MPDS-SL had the smallest increase in flexibility. In general, chairside materials demonstrated greater change in compliance from baseline compared to laboratory materials. Materials subjected to Fixodent cleanser, when averaged over time, were significantly more flexible than materials exposed to Efferdent cleanser.
Exposure of resilient soft liners to two common cleansers resulted in a significant increase in flexibility. This change in flexibility depended slightly, though significantly, on the type of cleanser, and appeared to be more significant with time. In general, chairside materials seemed to change more than laboratory-processed liners. The exception was Permasoft that was fabricated as a laboratory material but behaved like a chairside material.
The initiator of the polymerization reaction rather than the mode of polymerization may be more important in predicting a change in the flexibility of RDLs. Constituents within the oral environment may be more responsible for changes in RDL flexibility than denture cleansers.
将六种弹性义齿衬垫（RDL）暴露于两种泡腾义齿清洁剂中，以评估在模拟的1年时间间隔内顺应性的变化。
将Molloplast B、Mollosil、MPDS - SL、Permasoft、Softline和Sofreliner每种材料的十个样本暴露于Fixodent或Efferdent义齿清洁剂中。以方波方式施加循环载荷以得出载荷 - 位移曲线，从而测量在0、7、30、180和360个模拟天数时的顺应性。
所有12种材料/清洁剂组合在每个时间间隔相对于基线均显示出顺应性的显著变化。Mollosil从基线起的柔韧性增加最大，而MPDS - SL的柔韧性增加最小。总体而言，与实验室材料相比，椅旁材料从基线起的顺应性变化更大。随着时间的平均，暴露于Fixodent清洁剂的材料比暴露于Efferdent清洁剂的材料明显更柔韧。
弹性软衬垫暴露于两种常见清洁剂会导致柔韧性显著增加。这种柔韧性的变化虽轻微但显著地取决于清洁剂的类型，并且似乎随时间更显著。总体而言，椅旁材料的变化似乎比实验室加工的衬垫更大。例外的是Permasoft，它作为实验室材料制造，但表现得像椅旁材料。
在预测RDL柔韧性变化方面，聚合反应的引发剂而非聚合方式可能更重要。口腔环境中的成分可能比义齿清洁剂对RDL柔韧性变化负有更大责任。
