Prepares dental auxiliary students to operate x-ray units and expose bitewing, periapical, extra oral, and occlusal radiographs. Emphasis is placed on protection against x-ray hazards. Students also process, mount, and evaluate radiographs for diagnostic value. In this course students demonstrate competency on a manikin. In addition, students expose bitewing radiographs on a peer, role-play patient. Students gain further experience in exposing radiographs on patients in the clinical portion of their program. This course also provides the background in radiographic theory required for students to make informed decisions and adjustments. Students will manipulate and compare various dental materials. Each student will produce diagnostic impressions and models as well as recognize the properties and manipulation of gypsum products. Skills are developed concerning the properties and manipulation of temporary and permanent dental cements, materials used in tooth restoration and dental impression materials.