In typical odontological studies water sorption in the restoration material is determined by weighting a freshly mixed cement at regularintervals. In the case of resin-modified cement, such process was proven to be rapid; and over the first 8 h, absorption was shown tofollow Ficks law. These findings were attributed to conformational changes in hydrophilic segments of the polymer on absorption ofaqueous sodium chloride. It is considered that in this scenario the molecules form more compact coils than in the presence of purewater. To improve such evaluation process, to compare different dental cements and, at the same time, to develop new materials tobe used in dental treatment, insight on parameters such as consistency, working and setting times, as well as the chemical reactiondynamics are important. Such factors are usually hard to determine accurately and non-destructively. Two techniques, however,NMR and QENS have the potential to be successfully used for such studies. Here we propose to use QENS to understand how thedynamics of the liquid used in the hydration process in dental cement is modified when confined and relate the results get to durabilityproperties.