This study evaluated the effect of preliminary irradiation on the depth of cure and Knoop hardness of a veneering composite. The composite was filled into a mold, and irradiated with different irradiation duration or irradiance. After removing the mold, the depth of cure was measured, and the Knoop hardness number at each depth was determined and statistically analyzed using Mann-Whitney U test...

Aims: This work aims to assess the flexural strength and depth of cure Optishade, Omnichroma Z350 dental resin composites.
 Study Design: Experimental Laboratory Study.
 Methods: To as per ISO standards, 15 samples each three materials were made (n=5) with dimensions 25x2x2 mm. They then subjected 3 point bending testing on a universal machine. standard, cylindrical 4 mm in diameter 6...

statement of problem: for many years, application of the composite restoration with a thickness less than 2 mm for achieving the minimum polymerization contraction and stress has been accepted as a principle. but through the recent development in dental material a group of resin based composites (rbcs) called bulk fill is introduced whose producers claim the possibility of achieving a good rest...

UNLABELLED The light-curing technique is relevant to reduce the degree of polymerization shrinkage, improving clinical and esthetic success of composite resin restorations. OBJECTIVE To evaluate in vitro the effect of four light-curing techniques on depth of cure of a composite resin. MATERIAL AND METHODS Ten specimens of a composite resin were made in cylindrical cavities prepared in PVC p...

The purpose of this study was to analyze the curing behavior of a nanocomposite by assessing in real time the degree of cure at depths of 2 mm and 6 mm. The variation of hardness with depth, shrinkage stress, and curing time until gelation with 16 curing regimes was further investigated using one halogen and three LED curing units. In the present study, it was shown that the soft-start polymeri...

The aim of the study was to determine the effect of the flexural strength on denture bases fabricated on different palatal vault depths. Also, to compare the flexural strength of high impact heat cure resin with regular heat cure resin denture bases. Edentulous casts with deep, medium and shallow palatal vault depth were selected. Three different moulds were made in silicone duplicating materia...

OBJECTIVE Depth of cure of composite material is restricted and it depends on many parameters such as thickness. The aim of this in-vitro study was to evaluate the depth of cure of two light-cured core build-up composites (Quixfil and Photocore) in different thicknesses, when cured for 60 seconds. MATERIALS AND METHODS The Vickers microhardness measurements were made for each side of the top ...