title: Optical test for the groove adaptation of dental amalgams using a He-Ne laser.
abstract: An optical test was developed for amalgam alloys by condensing amalgams against stain-less steel blocks with regularly spaced grooves forming diffraction gratings. The quality of the diffraction pattern obtained with a He-Na laser from these amalgams is a measure of the adaptation to the grooves.
mesh_terms: D003723:Dental Amalgam; D006371:Helium; D007834:Lasers; D009356:Neon; D055095:Optics and Photonics; D013499:Surface Properties
chemical_list: D006371:Helium; D009356:Neon; D003723:Dental Amalgam