The effect of curing light variations on bulk curing and wall-to-wall quality of two types and various shades of resin composites

摘要: Abstract Objectives. This study evaluated the influence of light intensity and irradiation time variations on curing efficacy two types various shades resin composites effect reduced preservation wall-to-wall continuity. Materials Methods. Three microfilled (in three different shades) one hybrid composite were used in this study. Polymerization shrinkage, hardness adaptation adhesive restorations dentin cavities determined at intensities 175 700 mW/cm 2 times 10 60 s. Data compared using a general linear model analysis. Results. Shrinkage measurements indication conversion rate. Reduced slowed down rate polymerization but did not reduce as long an s was employed. High-energy caused increased separation from tooth structure. On basis obtaining optimal adaption, it demonstrated that to be more effective than energy. Significance. Light-cured require understanding their structure, pigmentation parameters obtain performance. High light-curing does necessarily lead quality.