POSITION SUMMARY. The dental hygienist (DH) primarily provides dental preventive services to patients. These include but are not limited to screening, scaling and root planning, dental prophylaxis, fluoride and sealant applications, and health education. The dental hygienist is a crucial team member to any dental public health program. ESSENTIAL FUNCTIONS. 1. . Examines patient oral cavity including the mouth, throat and pharynx, and records co...