Orion in the chemical cure form is a paste/paste system. The dentist has a choice of using self or light-cure form, depending upon the clinical situation. There is a virtually unlimited working time in the light-cure mode, and a convenient working time in the self-cure (chemical) mode. It is moldable and non-sticky yet has an adhesive consistency. Material has well-balanced x-ray opacity that permits easy distinguishing from tooth structure, pins and posts. It contains moderately hard filler for easier carving and shaping. The standard. Orion kit comes in two shades: the contrasting one, for easy distinguishing from the tooth structure; the other is tooth colored for use under shell crowns.