DeWald J P, Ferracane J L
J Dent Res. 1987 Mar;66(3):727-30. doi: 10.1177/00220345870660030401.
Four commonly used methods for evaluating depth of cure in light-activated composites were compared. Optical and scraping methods correlate well, but severely overestimate depth of cure as compared with hardness testing or degree of conversion analysis. Degree of conversion appears to be the most sensitive test of depth of cure.
