Expanded Function Dental Assistant Program Instructional Assistant (Part-Time) Greater Altoona Career & Technology CenterExpanded Function Dental Assistant Program Instructional Assistant (Part-Time)Altoona, PAInterested candidates should be excited to work alongside GACTCs instructional staff to share their knowledge of the functions of an Expanded Function Dental Assistant EFDA. In this part-time position the individual will demonstrate knowledge of safe work practices in the dental setting and be able to perform and teach the functions of an EFDA.