DH 170 – Dental Hygiene Principles – 2025/2026 – 40 Exam Questions on Ergonomics, Equipment & Clinical Environment

This document contains 40 updated and accurately answered exam questions for the course DH 170 – Dental Hygiene Principles, specifically designed for the 2025/2026 academic year. It focuses on foundational clinical knowledge and practical concepts essential for both new and returning students in dental hygiene programs. Key content areas include ergonomics and operator positioning, client care environments, and dental equipment and instrumentation. Students will gain familiarity with essential terms and functions related to the dental unit, evacuation and handpiece lines, instrument trays, reprocessing areas, and the use of tools like typodonts, computer screens, and radiographic equipment. Emphasis is also placed on appropriate professional conduct, especially regarding instrument use by non-registered individuals, and understanding the layout and use of clinical spaces such as the SteriCentre and Dental Laboratory. This document is ideal for: First-year Dental Hygiene students Dental Assisting students and applicants Learners preparing for pre-clinical assessments or practicals Students reviewing for safety and operational protocol exams in clinical dentistry Keywords: DH 170, dental hygiene principles, dental ergonomics, clinical environment, client positioning, dental equipment, instrument tray, dental unit, radiographic equipment, typodont, SteriCentre, instrument reprocessing, dental assisting prep, dental chair setup, dental light