with respect to chamber 64 or the two chambers may be interconnected from all of the above it will be understood that a method is provided for curing dental articles having light curable material as their composition or a portion of their composition the dental article is engaged with a support and the light curable material is positioned for curing by projecting collimated light on it it is preferred to project the light curable material from a plurality of light sources positioned at different degree settings of an imaginary 360 u00b0 circle as shown in fig2 the lamps 30 31 32 and 33 are positioned one in each of the four 90 u00b0 quadrants of an imaginary 360 u00b0 circle around the dental article d the circle is envisioned as extending around the dental article in a horizontal plane the light sources or lamps are preferably positioned in at least three of the quadrants and preferably positioned so that all quadrants of the imaginary 360 u00b0 circle are simultaneously projected with light at the periphery of the light curable material the light sources are preferably aimed with the center of the projected light from each light source approximately crossing an imaginary line corresponding with the average vertical height of the outer peripheral massive portions of the light curable material by massive portions it is meant to eliminate distorsions in position due to small thin projecting portions which in general would not be expected to exhibit severe curing problems the projected light is preferably projected at an angle of 20 u00b0 to 45 u00b0 from an imaginary horizontal plane taken at the lowermost portion of light.