Müller Johannes A, Rohr Nadja, Fischer Jens
Department of Rekonstructive Dentistry and Tempomandibular Disorders, Division of Dental Materials and Engineering, University Center for Dental Medicine Basel, University of Basel, Basel, Switzerland.
Eur J Oral Sci. 2017 Apr;125(2):141-150. doi: 10.1111/eos.12339. Epub 2017 Feb 21.
The aim of this study was to evaluate the water sorption and solubility test design of ISO 4049 for resin cements. Sorption and solubility of six dual-curing resin cements [RelyX Unicem 2 Automix (RUN), Multilink Speed CEM (MLS), Panavia SA Plus (PSA), RelyX Ultimate (RUL), Multilink Automix (MLA), and Panavia V5 (PV5)] were analyzed by storage in distilled water after dual-curing. In addition, sorption and solubility during thermal cycling were assessed with self-cured and dual-cured specimens. After water storage, all cements revealed sorption in the range of 30 μg mm except for PV5, for which sorption was markedly lower (mean ± SD = 20.8 ± 0.4 μg mm ). Solubility values were negative for RUN and RUL (-2.1 ± 0.08 μg mm and -1.9 ± 0.13 μg mm , respectively). All other cements attained positive values in the range of 0.4-0.8 μg mm . Thermal cycling effects were more pronounced. The assessment of water sorption according to ISO 4049 provides reliable results. Solubility results must be interpreted with care because absorbed water may distort the values.
本研究的目的是评估用于树脂水门汀的ISO 4049的吸水和溶解试验设计。通过在双固化后储存在蒸馏水中，分析了六种双固化树脂水门汀[RelyX Unicem 2 Automix（RUN）、Multilink Speed CEM（MLS）、Panavia SA Plus（PSA）、RelyX Ultimate（RUL）、Multilink Automix（MLA）和Panavia V5（PV5）]的吸附和溶解性。此外，还对自固化和双固化试样在热循环过程中的吸附和溶解性进行了评估。储水后，除PV5外，所有水门汀的吸附量均在30μg/mm范围内，PV5的吸附量明显较低（平均值±标准差=20.8±0.4μg/mm）。RUN和RUL的溶解值为负（分别为-2.1±0.08μg/mm和-1.9±0.13μg/mm）。所有其他水门汀的溶解值在0.4-0.8μg/mm范围内为正值。热循环效应更为明显。根据ISO 4049对吸水的评估提供了可靠的结果。溶解结果必须谨慎解释，因为吸收的水分可能会使数值失真。
