Water Sorption and Solubility of Luting Agents Used Under Ceramic Laminates With Different Degrees of Translucency

Abstract

In the case of high-translucency laminates, luting agents with different activation methods might be used. However, even in thin sections, decreasing the translucency of the laminate led to significant loss of light penetration, indicating a decreased likelihood of the physical activation of the resin cement.

In Vitro Evaluation of Physical and Mechanical Properties of Light-Curing Resin Cement: A Comparative Study

“…9,13,31 The sorption and solubility are a diffusion-controlled phenomenon that occurs directly on the resin matrix 11 and appears to be related to material composition and concentration, size, and type of fillers. 4 In the present study, the RLX resin cement had the highest sorption and solubility means (23.2 µm/cm 3 and 2.40 µm/cm 3 , respectively). High sorption is not necessarily correlated to high solubility 8.31 µm/cm 3 .…”

“…The evaluation of sorption and solubility followed previous studies. 4,5,9,11 Following the hardness test, five samples of each resin cement were selected and placed in a desiccator containing freshly dried silica gel at 37 ± 2°C. After a 24-hour period, the samples were maintained at 23 ± 2°C for 2 hours.…”

“…The samples were placed in a desiccator and constantly weighed (daily) until a consistent mass with variation less than 0.1 mg (m3) was attained. The sorption and the solubility were calculated using the following equations: 4,5,9…”

“…1,2 Establishing a durable bond between tooth tissue, resin cement, and the ceramic substrate is critical to the clinical success and longevity of indirect restorations. 3 An important aspect to consider is that the resin cement film around the margins of the restorations is often located close to the free gingival margin or gingival sulcus, [4][5][6] a susceptible area of sorption, hydrolysis, and dynamic fatigue which may lead to polymer degradation. 7 Resin-based luting cement is methacrylate monomers with small filler contents and a photoinitiator.…”

“…13 Additionally, from a clinical perspective, light-cured resin cements with a lower concentration of tertiary amine display greater long-term color stability. 4 The extrinsic factors seem to be modulated by the conversion ratio and the physicochemical characteristics of the resin-based materials such as surface roughness and water sorption. 14 The performance of resin cement on the luting procedure and their mechanical properties are important factors to consider for the clinical success of indirect restorations.…”