Evaluation of Cements Curing Modes Regarding Microleakage During Cementation of E-max Laminate Veneers

Abstract

Purpose: The aim of this study is to investigate the effect of the curing modes of two adhesive resin cements (Light cure mode of the Variolink Veneer, the self-cure mode and dual cure mode of the Multilink Automix) on the marginal leakage of lithium disilicate ceramic laminate veneers. Methods: A total number of forty eight extracted natural central incisors were prepared to receive ceramic laminate veneers, constructed using E-max ceramic divided into three groups cemented using three curing modes of two adhesive resin cements {light-cure mode of Variolink Veneer, self-cure mode of Multilink Automix and dual-cure mode of Multilink Automix adhesive resin cements} . Die penetration test was done using the methylene blue stain {qualitative assessment} for testing the die penetration along the tooth/ceramic interface. Results: Descriptive statistical analysis revealed that the self-curing mode recorded the significantly least degree of leakage compared to the light and dual cure modes. The self-cure mode recorded (0.1±0.3) which was significantly lower than light cure (1.2 ±0.9) and dual cure mode (1.2 ±0.4), there was no statistical significant difference between the later two curing modes. The self-cure mode of the resin cement is considered a more effective method for having the least marginal leakage at the tooth/ceramic interface. There was no difference between the light cure mode and the dual cure mode.

Comparative Evaluation of Luting Efficacy Between a Dual-Cure and Light-Cure Resin Cement on Its Application on Root Surface Indirect Restorations: An In Vitro Study

“…Recently, companies such as 3M and GC have created self-adhesive resin cements that don't need the dentin to be pretreated. As a result of these cements' lack of an adhesive system, they significantly reduce the number of application stages and cut the length of clinical therapy, which results in a reduction in technique sensitivity by lowering multiple procedural error phases [20,21]. Self-adhesive cements have been shown to react with the hydroxyapatite crystals of the hard tissue in the oral cavity because they include multifunctional phosphoric acid methacrylates [21,22].…”