National Dental Assisting Examining Board (NDAEB) Practice Exam

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Prepare for the National Dental Assisting Exam with comprehensive quiz questions, including multiple choice and detailed explanations. Equip yourself for success!

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In relation to ergonomics in a dental business office, how many classifications of motion are there?

Three
Four
Five
Six

The correct answer is: Five

In the context of ergonomics, especially within a dental business office, there are five classifications of motion. These classifications are crucial for understanding how to minimize strain and improve efficiency while performing job tasks. The five classifications typically include: 1. **Class I:** Sustained postures or movements that are habitual and involve repetitive motions that can lead to fatigue or injury. 2. **Class II:** Motion that requires reaching or extending the arms which can increase the risk of musculoskeletal disorders if done excessively. 3. **Class III:** Movements that involve lifting or carrying, often requiring proper techniques to ensure safety. 4. **Class IV:** Actions that involve pushing or pulling, which can also place a strain on the body without the proper ergonomic practices. 5. **Class V:** Twisting motions that can put additional stress on the back and neck if not managed effectively. Understanding these classifications is essential for dental professionals to promote a safe working environment and maintain their health while performing their duties. Incorporating ergonomic principles, such as the proper arrangement of dental tools and equipment, can help in reducing the likelihood of injury caused by poor posture or repetitive motions.