الفهرس 
The effect of light intensities, curing modes and thermocycling on tooth - restoration interface of two different resin composites
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Abstract
This study was performed to assess the effect of types of composite, light intensities, curing modes and thermocycling on tooth- restoration interface. A total of 160 freshly extracted sound human premolars were selected. Teeth were mounted individually in one inch cylindrical acrylic blocks. Specimens were divided into 2 main groups 80 teeth each according to type of resin composite i.e. either using nanofilled resin composite or using microhybrid resin composite. Each group was further subdivided into two subgroup 40 teeth each according to intensity of light i.e. either low intensity or high intensity. Each subgroup was further divided into two division 20 teeth each according to curing mode i.e. either soft - start polymerization or snap shot polymerization. Each division was finally classified into two classes 10 teeth each according to thermocycling i.e. either did not subjected to thermocycling or subjected to thermocycling. Standardized class v cavities were prepared on buccal surfaces of the teeth. Cavities were restored with the different two types of resin composite using different light intensities and different curing modes