Provides an in-depth knowledge of the concepts and methods used in the practice of preventive dentistry. This course emphasizes the necessity for the dental assistant to both recognize certain oral hygiene needs of each patient and communicate those needs to the patient. In addition, this course covers current techniques used in caries prevention, such as coronal polishing, oral hygiene instruction, nutritional counseling; and the application of sealants. This course also includes a community service project. Enrollment is restricted to students in the Dental Assisting Certificate. Non-majors need permission of the Program Director. Prerequisite: DA 170, 171, 173, and 175 with grades of C or higher.