OBJECTIVES To compare the polymerization contraction stress of resin cements in dual-cure and self-cure modes, and verify its effect on microleakage and gap formation in class I cavities restored with porcelain inlays. METHODS Dual-cure cements (Calibra, Choice and RelyX ARC) were monitored for contraction stress during 30 min in the tensilometer, in the presence or absence of photo-activatio...

This paper explores the role of Blending Theory, as a framework, to aid in design decisions while deploying mobile experiences for heritage storytelling. Blending Theory provides a structured way of thinking about how digital and physical spaces can be brought together to create new experiences in blended spaces. In this paper we describe the development of an app that aims to enhance the visit...

During the cementation of metallic restorations, the polymerization of dual-curing resin cements depends exclusively on chemical activation. This study evaluated the influence of chemical activation compared with dual-curing (chemical and light activation), on the hardness of four dual-curing resin cements. In a darkened environment, equal weight proportions of base and catalyst pastes of the c...

statement of the problem: increasing the thickness of the veneering porcelain may affect the polymerization of resin cements. incomplete polymerization of resin cements can lead to compromised quality of restoration and decrease the longevity of indirect restorations. purpose: this study sought to assess the effect of ips empress porcelain thickness on the degree of conversion of light-cure and...

The aim of this study was to investigate the health risks associated with the man power working in the cement factories at Kashmir, India. In order to study the health hazards of cement factory on workers, three cement factories were considered for the studies which includes; JK Cements Ltd. Khrew, Saifco Cements Ltd. Khonmoh and Khyber cements Ltd. Khonmoh Kashmir, India. Total of 10% of emplo...

Today proper selection of dental cements is a key factor to achieve a successful restoration and will greatly increase the chances of long-term success of the restoration. In recent years, many newly formulated dental cements have been developed with the claim of better performance compared to the traditional materials. Unfortunately, selection of suitable dental cement for a specific clinical ...

This paper presents an assessment of recycling thermally treated fluvial sediments as a supplementary cementitious material (SCM). Different calcination treatments were conducted with temperatures ranging between 450°C and 950°C. For each calcined sediment, detailed characterization was carried out. Subsequently, blended cements containing 25% (CS) prepared tested, including portlandite consump...