Hansen, E K Visible-light curing units: correlation between depth of cure and distance between exit window and resin surface. [electronic resource] - Acta odontologica Scandinavica Jun 1997 - 162-6 p. digital Publication Type: Comparative Study; Journal Article ISSN: 0001-6357 Standard No.: 10.3109/00016359709115410 doi Subjects--Topical Terms: AdultBicuspid--anatomy & histologyBisphenol A-Glycidyl Methacrylate--chemistryComposite Resins--chemistryDental Cavity Preparation--classificationDental Enamel--anatomy & histologyDental Restoration, Permanent--instrumentationEquipment DesignHardnessHumansLightMandibleMaxillaMolar--anatomy & histologyPolyurethanes--chemistryRadiography, BitewingRegression AnalysisSurface Properties