Effect of curing distance for cure depth in composite resin.

The effect of altering the distance between light tip and outer layer of composite (DLR) on the depth of composite cure with a range of low to high light intensity curing lamps and with different types of light unit is of interest. Three LED units (T= Freelight,U = Ultrablue IS, V = Coltolux LED, one PAC unit (S=PAC) and three halogen light-curing units (P = XL2500, Q = HelioluxVL, R = Visiolux) were analyzed. A human molar tooth that was separated mesio-distally to buccal and lingual halves was used to create a natural tooth sample.

Clinical performance of various bonding agents in noncarious cervical defects.

Aim: Four bonding agents and a composite restorative resin were evaluated in patients having noncarious cervical defects.

Materials And Methods: This clinical trial was conducted in patients having at least 4 noncarious cervical defects in posterior teeth evaluating the clinical effectiveness in relation to retention, discoloration at margins, and postoperative sensitivity of 5, 6, 7, and 8 generations of bonding agents over a period of baseline, 3, 6, 12, and 24 months.

Statistical Analysis: Data were recorded and put into statistical analysis using Chi-square tests.

Comparative Evaluation of Compressive Strength and Flexural Strength of GC Gold Hybrid, GIC Conventional and Resin-modified Glass-ionomer Cement.

Purpose: The aim of the study was to emphasize the compressive strength and flexural strength of glass-ionomer cement (GIC)-gold hybrid, conventional GIC, and resin-modified GIC (RMGIC).

Methodology: Three GIC materials were used in the study: group A: GC-gold hybrid (Gold Label hybrid Universal Restorative), group B: type II conventional GIC, and group C: RMGIC. A total of 120 cylindrical test specimens of dimensions 4 mm diameter × 6 mm height were prepared from a custom-made Teflon mold according to respective study groups.